WAVS Installation Guide for Generic Applications{7347, 7348} Caterpillar

WAVS Installation Guide for Generic Applications{7347, 7348}

Usage:

769C 01X

Agricultural Tractor: All
Articulated Truck: All
Asphalt Paver: All
Challenger: All
Cold Planer: All
Combine: All
Compact Wheel Loader: All
Earthmoving Compactor: All
Excavator: All
Integrated Toolcarrier: All
Landfill Compactor: All
Load Haul Dump: All
Motor Grader: All
Multi Terrain Loader: All
Off-Highway Truck/Tractor: All
Paving Compactor: All
Pipelayer: All
Road Reclaimer/Soil Stabilizer: All
Soil Compactor: All
Telehandler: All
Track-Type Loader: All
Track-Type Skidder: All
Track-Type Tractor: All
Wheel Dozer: All
Wheel Loader: All
Wheel Skidder: All
Wheel Tractor-Scraper: All

Introduction

This manual contains important information that is required for the installation and operation of the Work Area Vision System (WAVS) Closed Circuit Television (CCTV) system. Please, thoroughly read the manual before installation and before initial operation of the system.

Caterpillar exercises all reasonable efforts in order to ensure that this product will perform properly in aftermarket and Original Equipment Manufacturer (OEM) applications. Caterpillar assumes no responsibility for deficiencies in installation or for proper use.

Important Safety Information

Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.

A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools in order to perform these functions properly.

Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard.

Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. If a tool, a procedure, a work method, or operating technique that is not specifically recommended by Caterpillar is used, you must ensure that it is safe for you and for other people to use.

You should ensure that the product will not be damaged or the product will not be made unsafe by the operation, lubrication, maintenance, or the repair procedures that are used.

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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manual. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Caterpillar dealer for replacement manuals. Proper care is your responsibility.

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Personal injury or death can result from improper assembly procedures.

Do not attempt any assembly until you have read and understand the assembly instructions.

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Movement of the transmitter could cause unexpected blade movement. Death or serious injury could occur. Turn off the transmitter before you move the transmitter or before you adjust the transmitter.

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When replacement parts are required for this product Caterpillar recommends using Caterpillar replacement parts or parts with equivalent specifications including, but not limited to, physical dimensions, type, strength and material.

Failure to heed this warning can lead to premature failures, product damage, personal injury or death.

Obtain the most current and the most complete information before starting any job. Caterpillar dealers have the most current available information.

Precautions for Installation

WAVS can be provided in order to enable a machine to comply with standards for the machine. WAVS can be provided in order to aid the operator with the operation of the machine. WAVS should be installed in order to comply with any applicable standards for each individual application.

Operational Precautions

WAVS is designed in order to supplement the view for the operator during machine operation. This system is not intended as a substitute for proper operating techniques. This system is not intended as a substitute for safe operating techniques. This system is not intended to take the place of other standard supplemental systems for vision such as rear mirrors and side mirrors.
Before the operation of the machine begins, make sure that the WAVS display for the screen is adjusted properly. Proper adjustment will avoid disruptions during machine operation.
Prior to the operation of the machine, make sure that the view that is provided by all the cameras is adequate. Make adjustments prior to operating the machine.
Prior to operating the machine, ensure proper orientation of images from the camera. Rear facing cameras should yield a mirror image.
Prior to operating the machine, make sure that the brightness and contrast are adjusted. The brightness and contrast are adjusted in order to minimize the disruption of the view.

Parts

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Illustration 1	g01241054
WAVS camera

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Illustration 2	g01241055
WAVS display

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Illustration 3	g01241058
WAVS switch

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Illustration 4	g01241088
WAVS operator monitor group (20) Ball mounts (21) Clamp

The Complete Set of Parts

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Table 1
One Camera System Kit
282-4441 Camera Kit
Quantity	Part Number	Description
1	251-4138	Operator Monitor Gp LCD monitor with 4 meter cable and 261-3222 Display Mounting Gp
1	347-1668	Camera Gp (115-DEG, COLOR)
1	274-4479	Cable As 16 meter Armored Version
1	276-2638	Bracket As
1	275-0054	Switch Harness As

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Table 2
Two Camera System Kit
282-4442 Camera Kit
Quantity	Part Number	Description
1	251-4138	Operator Monitor Gp LCD monitor with 4 meter cable and 261-3222 Display Mounting Gp
2	347-1668	Camera Gp (115-DEG, COLOR)
2	274-4479	Cable As 16 meter Armored Version
1	251-4168	Switch
2	276-2638	Bracket As
1	275-0054	Switch Harness As

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Table 3
Three Camera System Kit
282-4443 Camera Kit
Quantity	Part Number	Description
1	251-4138	Operator Monitor Gp LCD monitor with 4 meter cable and 261-3222 Display Mounting Gp
3	347-1668	Camera Gp (115-DEG, COLOR)
3	274-4479	Cable As 16 meter Armored Version
1	251-4168	Switch
3	276-2638	Bracket As
1	275-0054	Switch Harness As

Optional Parts

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Table 4
Optional WAVS Parts
Quantity	Part Number	Description
1	275-5858	Rocker Switch (CAMERA)
1	251-4162 ⁽¹⁾	Bracket Kit (CAMERA)
1	280-2690	Monitor Harness As
1	245-7434	Connecting Plug Kit for 275-5858 Rocker Switch
1	236-4631	Bezel for 275-5858 Rocker Switch
1	258-7484	Bracket As
1	333-8153	Electronic Connector Gp (Video Bulkhead)
1	283-0657	Cable As 3 meter Armored Version
1	274-4477	Cable As 5 meter Armored Version
1	283-0658	Cable As 7.5 meter Armored Version
1	283-0659	Cable As 9 meter Armored Version
1	274-4478	Cable As 11 meter Armored Version
1	274-4479	Cable As 16 meter Armored Version
1	261-3222	Display Mounting Gp
1	271-7455	Extension (Double Ball Extension (Dumbbell))
1	270-3311	Clamp Gp (5.75 inch)
4	8T-0288	Bolts (5M x 12mm)
4	4B-4274	Washers (5 mm)

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^( 1 )

Refer to Table 5 for an additional parts list.

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Table 5
251-4162 Bracket Kit (CAMERA)
Part Number	Description
153-9300	Bolt (M3)
224-6193	Bolt (M3)
8T-2658	Locknut (M3)
6V-7357	Bolt (M6)
129-3178	Locknut (M6)
	Camera Clam Shell
280-2690	Monitor Harness As 4 meter Cables

Operating Characteristics and Specifications

System Specifications

Supply voltage: +11 VDC to +32 VDC
Current for 12 V system with 3 cameras: 1.5 amp maximum
Current for 24 V system with 3 cameras: 1.0 amp maximum
Ambient operating temperature range for the display: −25 °C (−13 °F) to 75 °C (167 °F)
Ambient operating temperature range for the camera(s) and switch: −40 °C (−40 °F) to 75 °C (167 °F)
The minimum required voltage to activate the trigger: +11 VDC

Cable Specifications

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Illustration 5	g02039355
Typical example

When mating cable connectors, tighten 1/4 turn past initial gasket contact. A small gap between connector housings is normal. Refer to Illustration 5.

Note: Unless stated otherwise, all of the dimensions are in millimeters.

Standard: Armored 16 m (52.5 ft) 274-4479 Cable As (abrasion resistant).
Optional lengths are available.

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Illustration 6	g02030133
WAVS camera video cable (1-4) Cable pins

Switch Specifications

Type: solid state
Inputs: 3 (prioritized)
Outputs: 1
Weight: 0.134 kg (0.2954 lb)
Dimensions: 134 mm (5.3 inch) length x 36 mm (1.4 inch) width x 31 mm (1.2 inch) height
Sealing: sealed for outdoor environment applications.

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Illustration 7	g01241275
Switch

Display Specifications

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Illustration 8	g01241416

Display is validated for vibrations up to 9 g's RMS. (comparable to 4.5 g's vibration loading for 10,000 hours of operation)
175 mm (7 inch) color LCD display
Auto-sense illumination for changing light conditions
(480 x 3) x 234 pixels resolution
16:9 aspect ratio
Luminance: 400 Cd/m2 (adjustable down to 4 Cd/m2)
Weight: 2.3 kg (5.07 lb)
Dimensions (without bracket): 175 mm (6.9 inch) length x 125 mm (4.9 inch) height x 70 mm (2.8 inch) width
Sealing: IP54 (withstands splash, but not immersion or power spray wash)

Note: The depth of the display is 25 mm (1 inch) without the sun visor.

Note: Do not allow water or any liquid cleaner to flow into or be sprayed into the terminal on the back of the display.

Camera Specifications

Type: color CMOS
Picture elements: 512 (H) x 582 (V)
Light sensitivity: 0.5 lux
Viewing angle (in degrees): Standard: 115 (H) x 86 (V)
115 degree camera is validated for 15.3 g RMS accelerated testing (comparable to 7 g loading for 10,000 hours operation).
Viewing angle (in degrees): Optional: 78 (H) x 52 (V)
78 degree camera is validated to 10 g RMS (comparable to a 5 g load for 10,000 hours operation).
Weight: 0.42 kg (0.9259 lb)
Dimensions (with bracket): 66 mm (2.6 inch) height x 77 mm (3 inch) width x 55 mm (2.17 inch) depth.
Sealing: IP69K, DIN-IEC 529 (withstands high pressure wash and immersion)
Bracket: a vertical universal mount is standard. However, a horizontal mount is available.

Mechanical Installation

This section discusses the mechanical installation of WAVS.

Camera Installation Considerations and Triggers

When installing the WAVS cameras on a machine, the mounting and the vibrations being transmitted to the camera should be considered. The camera does not have image stabilization and high vibrations will make the image blurry and possibly unusable. When installing a camera, the same considerations should be used as in installing a light. The more vibration transmitted to the component, the shorter the life expectancy of that component. Refer to ""Camera Specifications" " for further information.

A WAVS may be installed in order to utilize either a single camera or multiple cameras. Only one display is required for the WAVS.

Note: This section describes the types of "Control Strategies" that can be configured by the use of "Triggers". There are more details about default cameras and priority of triggers in the ""Multiple Camera Operation" " and in the ""Cable Connections and Cable Wiring" " sections of this document.

The term "Trigger" or "Triggers" refers to any device or any component on the machine that is able to provide an electrical signal to the WAVS. A sufficient electrical signal of 11 volts or higher will serve as an input to the WAVS. The input will trigger a response by the WAVS.

"Triggers" are used in order to allow a specific type of system configuration. When the appropriate trigger is connected, the display can be configured to display the desired camera view which is the desired display strategy.

Refer to Table 6 for examples of various "display strategies". Although Table 6 is intended to provide useful guidance, each system application might have unique safety needs that should take a precedence over these guidelines.

Single Camera Installations

In single camera applications, the display can be configured in order to show the image that is provided by the camera at all times. The display can be configured to show the image that is provided by the camera when a certain machine condition exists.

An example would be of a rearward looking camera image that is displayed only when the machine is in reverse gear.

Note: In order for the camera image to be displayed at all times during machine operation, the input for the camera trigger must be connected to the supply voltage.

Refer to the ""Cable Connections and Cable Wiring" " section for wiring connections.

Multiple Camera Installations

A 251-4168 Switch is required for multiple camera applications. The switch is designed to allow a maximum of three cameras to be connected to the WAVS display. Each of the cameras may be selected manually by use of the "Camera Selection" button on the display. However, the normal operating mode is the "Automatic" mode. The "Automatic" mode is configured in order to select the appropriate camera. The camera that is selected is based on the machine operation or the machine condition.

There are individual triggers for each camera. A typical system configuration is referred to as a "Display Strategy" as shown in Table 6. The strategy for a multiple camera system may include the following information:

The image from the rear camera will be displayed when the operator places the machine in reverse.
The image from a camera that is mounted on the side of the machine is viewed only when a mechanical switch is pressed by the operator.
An image from the forward camera will be displayed at all other times.

The strategy above can be carried out by configuring the triggers for the cameras as described below:

Connect the trigger for the rear camera to an input signal that supplies system voltage to the trigger when the machine is placed in the reverse gear.
Connect the trigger for a camera that is located on the side of the machine to an input signal that will supply system voltage when the trigger is activated.
No trigger is required for the front camera. The view from the front camera will be displayed unless the view from another camera is triggered to display. The view from the front camera will be configured as the default view.

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Table 6
Location of Camera	Display Strategy
A single camera that is located at the rearward end of the machine	The display shows the image from the camera when the transmission is in reverse gear.
A single camera that is located on the right or left side of the machine	The display shows the image from the camera if the machine transmission is in forward, neutral, and reverse.
A single camera that is located on the forward end of the machine	The display shows the image from the camera if the machine transmission is in forward, neutral, and reverse.
Using two cameras. One camera that is located at the rear of the machine and one camera that is located on the right side or left side of the machine.	The display shows the image from the rearward mounted camera when the transmission is in reverse gear. The display shows the image from the right or the left camera whenever a trigger is activated.
Using two cameras. One camera located at the rear of the machine and one camera that is located on the front of the machine.	The display shows the image from the rearward mounted camera when the transmission is in reverse gear. The display shows the image from the camera that is located on the forward end of the machine whenever the rear camera view is not being displayed. The forward mounted camera is set as the default camera.
Using three cameras. One camera that is located at the rear of the machine, one camera that is located on the front of the machine, and one camera that is located on the right side or left side of the machine.	The display shows the image from the rearward mounted camera when the transmission is in reverse gear. The display shows the image from the right camera or the left camera when a trigger is activated. The display shows the image from the camera that is located on the forward end of the machine whenever the other cameras are not displayed. The forward mounted camera is set as the default camera.

Installing the Camera(s)

Note: Under no circumstances should the camera(s) or the camera mounting hardware be welded to the structural members of the machine.

Mount the WAVS camera(s) on the machine in order to provide the desired field(s) of view.

Aim the cameras in order to show a portion of the machine on the display. Camera views should provide the operator with a frame of reference.

Locate the cameras near the top of the compartment if the cameras are to be mounted behind a rear compartment. Aim the camera(s) downward in order to allow a portion of the rearward side of the machine to be visible.
Note: Rearward mounted cameras should capture a portion of the rearward tires or rearward side of the machine.

Mount the cameras in locations that meet the following conditions:
- Minimize the potential for damage to the camera such as avoiding locations of high vibration levels.
- Minimize exposure to dirt and mud.
- Minimize the amount of time the picture could be obscured by direct sunlight.
- Minimize exposure of the lens to rain. A protective covering may be used to help protect the lens from rain.
- Allow easy access and safe access for cleaning.

There may be objects that obstruct the view of a camera. The objects may include bumpers, hitch pins, stairs, or other types of objects.

Various methods can be used to minimize or to eliminate the obstruction of the provided camera view. Brackets or camera mounts can be used in order to relocate a camera.

Consideration should be made as to whether or not the bracket or mounting would significantly increase camera vibration or compromise the mounting criteria that is described above.

Note: If the use of camera brackets or mounts are needed in order to relocate a camera externally or within a recessed cavity, consideration should be given to the need of being able to access the angle adjustment screws on the sides of the camera.

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Illustration 9	g01241743
Rearward horizontally mounted camera on a loader

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Illustration 10	g01241752
(31) 276-2638 Bracket As (32) Camera cable installed (33) Camera mounting bolts and nuts (34) Camera bracket bolts (35) Camera cable grommet

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Illustration 11	g01241780
(31) 276-2638 Bracket As

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Illustration 12	g02053035
(41) Camera holder (42) Camera

Display Installation

Note: Under no circumstances should the display or the mounting hardware for the display be welded to the structural members of the machine.

When installing the display, take into consideration the following items:

Mount the display in the cab within 1.2 m (3.94 ft) of the operator's field of vision. Mount the display in a location that does not block the operator's visibility of risk areas around the machine.

Install the display in a location so that the display can be seen by the operator during normal operation of the machine. Locate the no more than 30 degrees from the "line-of-sight" of the operator.

The display must be adjustable without the use of tools. Ensure that the display can be adjustable in order to optimize the viewing angle of the display. This will compensate for different sized operators and for different operating conditions.

Do not locate the display in close proximity of a high power aftermarket Citizen Band (CB) antenna. WAVS is well shielded against electromagnetic interference. Some CB antennas can radiate very high levels of electromagnetic interference. If the antenna is too close to the display, the interference may distort the display images.

The display is not a sealed device. The display must be placed in a location that protects the display from moisture, heat, dust, debris, explosive gas, and corrosive gas. If the criterion for proper installation is not followed, damage to the display may result.

Additional considerations include mounting the display in a location that meets the following conditions:
- Does not expose the display to excessive glare from the sun.
- Does not interfere with the ability of the operator to enter or to exit the machine cab.
- Does not expose the operator or a person in a trainer seat to the potential of an impact injury during a machine collision or rollover.
- Does not interfere with the operator's direct line of sight or mirror views.
- Does not obscure the operator's view of safety messages within the cab.
- Does not interfere with operation of machine controls (gearshift, steering, etc).
- Does not interfere with operator comfort (resting position of arms and legs, etc).

Note: The display has two cables. One cable is for trigger devices and power input. Another cable is for the camera input. The display cable that is for the camera input is a maximum of 4 m (13 ft) long. Therefore, if the switch is used, then the switch must be located within 4 m (13 ft) of the display unit unless an optional extension cable is added.

Switch Installation

Select a location for the 251-4168 Switch within 4 m (13 ft) of the display unless an optional extension cable is used.

Drill and tap two M5x0.8 sized holes for the switch mounting screws.

Install the switch.

Connect the display cable to the switch.

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Illustration 13	g02030194
Typical example

Cables connecting to the 251-4168 Switch should be held with cable ties and/or P-clips to prevent excessive movement. Refer to Illustration 13.

Wiring Harness, Wiring, and Wire Connector Installation

Route the wiring and wiring harnesses through protected locations with Caterpillar recommended techniques for securing the harnesses. A good general rule of thumb for routing a wiring harness is if the harness moves, do not allow the harness to touch. If the harness touches, do not allow the harness to move.

The following steps are guidelines for machine wiring harness routing and installation:

Wires or harnesses that lead to a component connector must be secured within 150 mm of the connector.

Connectors must be mounted or secured. To secure a connector is defined as a means to tie wrap the connectors securely in order to prevent movement. If a tie wrap is used, the tie wrap must not be placed over the connector detention release mechanism. Also, the preferred method to secure a connector is the same as the dovetail mounting method that is used for the Deutsch (DT) brand connectors.

Tie wraps should only be used on harnesses that do not move. Do not secure the harness to a moving or a flexing object, such as a hydraulic hose.

Harnesses that must flex or move need to be secured with insulated P-clips.

Flex joints must not be in column loading. The wires should not be subject to pulling or pushing. Column loading can force movement of wires through clips. Column loading can also fatigue wires.

Connectors must not be placed in flex joints.

Breakouts must not be placed in flex joints.

Flex joints should incorporate a bend in order to facilitate bending and flexing.

The distance between clip points should not allow the harness to sag, sway, or touch due to machine movement or vibration.

Smaller harnesses should be clipped more often due to the flexibility of the smaller harnesses.

Do not route harnesses in an area that is expected to be or could be used as a step or standing location.

Do not locate harnesses, wires, or cables under filters or drains.

Do not locate harnesses, wires, or cables in areas that would allow the harnesses, wires, or cable to be used as a handhold.

Do not clip harnesses to wires, cables, hoses, or tubes that may flex or cause any type of damage to the WAVS cables.

Replace covers or boots on high power terminals and connectors if the covers or boots were removed.

Avoid hot surfaces that are above 85 °C (185 °F).

Install coupling points in a location that will allow service personnel access to the coupling points with both hands.

Do not route wiring in a location that will pose as a trip hazard. Do not route wiring in a location that will limit access to serviceable parts.

Consider aesthetics when routing wiring.

Excess cable should be coiled, but not too tightly. Avoid crimping the cable.

Do not staple through the cable.

Route the camera cable using a minimum bend radius of 50 mm (2 inch).

Route the camera cable so the cable would not be subject to abrasion or pinching.

Cable Connections and Cable Wiring

There are two applicable arrangements of WAVS:

One for single camera configuration
One for multiple camera configuration

Single Camera Configuration

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Illustration 14	g01241812

Note: If the camera is to be on at all times during machine operation, a wire jumper must be installed from pin 3 (camera trigger 1) to pin 1 (system power).

Multiple Camera Configuration

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Illustration 15	g01241814

Note: The switched +12/24 VDC, ground, and trigger inputs (that are equal to or greater than +11 VDC) for the display are to be provided by the customer.

Note: The WAVS is configured in order to designate camera 3 (C3) as the highest priority camera input, and camera 1 (C1) as the lowest priority camera input. When multiple triggers are active, the camera with the highest priority will be shown on the display.

Wiring Diagrams

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Illustration 16	g01241998
Display wiring harness for multiple camera configuration

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Illustration 17	g01242000
Display wiring harness for single camera configuration

Cable Routing

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Illustration 18	g01242088
Truck picture with multiple camera configuration and camera cable layout (45) Rear camera location (46) Electrical compartment (47) Machine cab (48) Display in cab (49) Front camera location (50) Camera cable routing (51) Right camera location

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Illustration 19	g01242090
Example of cable routing for a single camera installation on a loader (60) Rearward camera location (61) Camera cable routing (62) Machine cab (63) WAVS display in cab (64) Loader bucket

Routing a video cable may be as simple as following the existing machine wiring. However, this may not always be possible since all wires do not have the same performance characteristics.

Ensure that there is slack in the cable as the cable is routed through the machine. The cable slack will be necessary in the event that the installer would need to reroute the cable due to a specific problem in an isolated area of the machine.

As an example, route the cable from the display location to the exterior of the machine. In order to route the cable, the installer must drill a 25 mm (1 inch) to 38 mm (1.5 inch) hole in the cab wall in order to feed the cable through.

Use grommets in order to protect the harness during installation and machine operation. A bulkhead connector may be used in place of a grommet.

Prior to securing the cable(s), connect the cable to the display and the camera(s). Check the WAVS for correct operation. This process will ensure that the system was not damaged during the installation. After system operation has been verified, secure the cable(s).

Any extra length of video cable should be coiled and properly secured. Do not attempt to cut the cable to length. Do not attempt to splice the cable(s).

Note: In a single camera system configuration, be sure to tape the unused wire ends of the machine interface harness.

Note: The installer must be familiar with machine pivot or pinch points before the WAVS cables are installed. For example, a cable should not be installed along the top of a truck from the forward end of the truck to the rearward end of the truck if the truck has a dump body.

Camera and Display Adjustments

Camera views should provide the operator with a frame of reference. Position the cameras in order to allow a portion of the machine to be shown on the display.

As an example, cameras that are mounted behind a rear compartment should be located near the top of the compartment. The cameras should be also aimed in a downward position in order to allow a rearward portion of the machine to be visible in the image that is shown on the display.

Rearward mounted cameras should capture a portion of the rear tires or a portion of the machine.

In order to optimize the viewing area of each camera, physically rotate the camera inside of the plastic gimbal mount until the desired view is obtained. Loosen the two Allen head screws on either side of the gimbal mount for each camera in order to rotate the camera.

Note: Always maintain a small portion of the machine in the image that is shown on the display as a point of reference.

Adjust display orientation in order to suit each camera application.

Note: Rear facing cameras should always be set to the "mirror image" configuration. Mirror image is the factory setting for all cameras.

Note: The cameras that are used for forward, side, and other camera applications typically use a "Normal" image. The cameras that are used for forward, side, and other camera applications will require the installer to set the image orientation. Refer to Table 7 in the ""System Operation" " section of this document for information about the process in order to set the image orientation.

Refer to Table 7 in the ""System Operation" " section of this document for information about the process in order to activate the "Marker" line. The installer should set the "Marker" according to site management requirements.

Note: Once the camera settings are adjusted, the current settings will be stored in the memory of the display. Even if power is removed, the current settings will be retained in the display memory. There is no option available in order to restore the display to the factory settings for the cameras.

Finish the Installation

Verify that the mounting hardware is secure.

Verify that all of the cable connections are tight.

Verify that all of the cables and wires have been properly secured.

Verify that all machine plates and guards that may have been removed for the installation procedure are reinstalled on the machine.

Verify that the machine operates properly.

Verify proper image switching during all desired operation.

Verify that all images are oriented properly and that all images have a small portion of the machine in the image frame as a point of reference.

System Operation

WAVS can display the view of a single camera or the individual views of as many as three different cameras. WAVS has two modes of operation: manual mode and automatic mode.

WAVS is typically operated in the automatic mode. In automatic mode, the display will show the view of a camera that is selected due to machine condition. In manual mode, the display will show the view of the camera that is selected via the display keypad.

Automatic Mode

Refer to Illustration 20.

Switch to Automatic Mode
Press and hold the "Camera Selection" button (1) for two seconds in order to switch to the "Automatic" mode. When the display is set to the automatic mode, the display can also be placed in "Standby".

Single Camera Automatic Mode
The single camera system is only available with the automatic mode enabled.
Note: If the single camera system can be placed in manual mode, the display must be reconfigured. In order to reconfigure the display, press the "Camera Selection" button (1) and the "Contrast" button (4) simultaneously for 40 seconds. After 40 seconds, the green LED power light will flash once in order to indicate that the procedure was completed.
The single camera system can be placed in "Standby". Refer to Table 8 for an explanation of the "Standby" option.
In a single camera system, the system will automatically display the camera view based on current machine operation as determined by the WAVS configuration.
For example, WAVS may be configured in order to display the view from a rearward looking camera when the operator selects reverse gear.

Multiple Camera Automatic Mode
Note: The display will arrive from the factory with the "Manual" mode disabled. For multiple camera operation, the "Manual" mode will need to be enabled. In order to enable "Manual" mode, press the "Camera Selection" button (1) and the "Contrast" button (4) simultaneously for 40 seconds. When the 40 second time period has expired, the green LED power light will flash once in order to indicate that this procedure was completed. The "Camera Selection" button will now be enabled.
When the system is in the automatic mode, the system automatically selects the preferred camera view based on current machine operation as determined by the WAVS configuration.
For example, WAVS may be configured in order to display the view from the rearward looking camera when the operator selects reverse gear.
However, in a multiple camera system, the operator can override the automatic view by selecting "Manual" mode on the display.
In the "Automatic" mode, automatic selection of each camera will be enabled and the appropriate camera will be activated. In automatic mode, the display can also be placed in "Standby".
Note: The preferred camera view will always be shown on the display screen unless the display is placed in "Manual" mode.

In automatic mode, the display can also be placed into "Standby". In standby mode, the display will remain dark unless a camera view has been activated by machine operation or by the operator.
"Standby" may be useful at times when the operator feels that the display image is not needed, such as when traveling at night.
Refer to Illustration 20.
Press the "Standby Function ON/OFF" button (3) once in order to select "Standby". The red LED that is above and to the top right of the "Standby Function ON/OFF" button should illuminate in order to indicate that "Standby" has been selected.
In "Standby", the display should remain dark unless a camera trigger has been activated. The cameras can be installed in order to be triggered or activated by various electrical signals.
One type of electrical signal could be the back up buzzer that is used when a machine is placed in reverse gear.
"Standby" is useful when operating at night to minimize the distraction from the display at times when the image is not needed. Press the "Standby Function ON/OFF" button (3) a second time in order to exit the "Standby" option.

Manual Mode

Refer to Illustration 20.

Press the "Camera Selection" button (1) once, in order to enter the "Manual" mode. In the "Manual" mode, the red LED that is above and to the right of the "Camera Selection" button should flash.

While in the "Manual" mode, if the "Camera Selection" button (1) is pressed again, the display will scroll to the next camera in sequence.

If no camera is connected to a selected view the display will be blank. Press and hold the "Camera Selection" button for two or more seconds in order to exit the "Manual" mode and return to the "Automatic" mode.

Once the system is placed in "Manual" mode, the following conditions exist:

Automatic scrolling to each camera view will be disabled.
The camera triggers will be ignored.

Note: The display will arrive from the factory with the "Manual" mode disabled. For multiple camera operation, the "Manual" mode will need to be enabled. In order to enable "Manual" mode, press the "Camera Selection" button (1) and the "Contrast" button (4) simultaneously for 40 seconds. When the 40 second time period has expired, the green LED power light will flash once in order to indicate that this procedure was completed. The "Camera Selection" button will now be enabled.

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Illustration 20	g01242364
Display keypad (1) Camera selection button (2) Automatic brightness ON/OFF (3) Standby function ON/OFF (4) Contrast button (5) Brightness button (6) Reduce brightness or contrast adjustment button (7) Increase brightness or contrast adjustment button (8) Power ON/OFF function disabled (9) Camera select LEDs (10) Button status LEDs (11) Light sensor

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Table 7
Display Configuration
Operation	Procedure	Notes
Delay Activation ⁽¹⁾	1) Press button (1) in order to select the desired camera. 2) Press and hold button (3) for 40 seconds. Repeat Steps 1 and 2 in order to deactivate the delay.	Factory settings for Camera 1 and 2 are set to "delay on". Camera 3 is set to "delay off". The LED for button (8) will flash one time after button (3) has been held for five seconds. The delay cannot be activated for a specific camera while that camera is being activated by an input signal.
Mirror Image Activation	1) Press button (1) in order to select the desired camera. 2) Press and hold buttons (1) and (3) simultaneously for 20 seconds. Repeat Steps 1 and 2 in order to toggle the image.	The LED for button (8) will flash one time after buttons (1) and (3) have been pressed for 20 seconds. If the camera view is set to mirror image, then the view that is shown on the display will appear as if looking in a rear view mirror.
Inverted Image	Press and hold buttons (1) and (2) at the same time for 40 seconds.	If the inverted image option is active, the camera image will be shown upside-down on the display.
Marker ON/OFF	Press and hold buttons (2) and (3) simultaneously for ten seconds in order to switch the marker on or off. Set the marker to the required position with buttons (6) or (7).	The "Marker" is a small, green horizontal line that appears on the display screen.
Switch off the keyboard	Press and hold buttons (1) and (5) at the same time for 15 seconds in order to disable keyboard input. In order to enable the keyboard, press and hold buttons (1) and (5) at the same time for 15 seconds.	Even if the keyboard is switched off, the display will continue to provide the camera views when the cameras are triggered. However, any other operations or functions are disabled.

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^( 1 )

If a camera is controlled (triggered) by an intermittent signal such as an indicator lamp, the display image may blink when the delay for the camera is not active.

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Table 8
Display Adjustments
Operation	Procedure	Notes
Display ON/OFF	Button (8) may be disabled.	The display is switched on immediately when power is applied by the keyswitch.
Color Adjustment	While pressing buttons (4) and (5) at the same time, press button (6) or (7) in order to adjust the color.
Manual Camera Selection	Press button (1) once in order to exit the "Automatic Mode". Press button (1) repeatedly in order to step through each camera view.	One of the indicator LEDs (C1, C2, or C3) to the left of button (1) will indicate which camera view is being shown on the display.
Standby ON/OFF	Press button (3) in order to turn the standby option on/off.	If the standby mode is "ON", the display will remain dark until one of the cameras are activated by an input signal.
Automatic Brightness ON/OFF	Press button (2) in order to turn the automatic brightness option on/off.
Automatic Camera Selection	Press and hold button (1) for two seconds.	In this mode, a camera will be activated by a specified input such as placing the machine in reverse gear.
Contrast Adjustment	Press button (4) in order to enable the contrast adjustment, then press either button (6) or (7) in order to adjust the contrast level.	Press any other display key in order to exit the contrast adjustment mode.

Brightness Adjustment
Press button (5), then press either button (6) or (7) in order to adjust the brightness.

Contrast Adjustment
In order to adjust the contrast, press button (4) and either button (6) or (7) to adjust the brightness.

Manual Camera Selection
In order to enable the "Manual Camera Select" mode, press the "Camera Selection" button (1) once. The WAVS will exit the "Automatic" mode.
Press button (1) repeatedly in order to step through each camera view. One of the indicator LEDs (C1, C2, or C3) to the left of button (1) will indicate the camera that is being shown on the display.

Automatic Camera Selection
In order to select the "Automatic" mode, press and hold the "Camera Selection" button (1) for two seconds. In this mode, a camera will be triggered by a specified input such as placing the machine in reverse gear.

Automatic Brightness ON/OFF
In order to select the "Automatic Brightness ON/OFF" option, press the "Automatic Brightness ON/OFF" button (2) in order to turn the "Automatic Brightness" option on or off.

Standby ON/OFF
In order to select the "Standby ON/OFF" option, press the "Standby Function ON/OFF" button (3) in order to turn the "Standby" option on or off. If the "Standby" mode is "ON", the display will only show the view of a triggered camera.

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Illustration 21	g01242395
Marker shown on display

Marker ON/OFF
The "Marker" is a feature that must be activated by the person that performs the WAVS installation.
The "Marker" is a feature that is activated for a specific camera. For example, the marker can be used as a reference line on the rear camera for the operator to stop the machine at a desired location.
The "Marker" (70) is a small, green horizontal line that appears on the display screen when the marker is turned on. Refer to Illustration 21.
In order to switch the "Marker" on or off, press and hold the "Automatic Brightness ON/OFF" button (2) and the "Standby Function ON/OFF" button (3) at the same time for ten seconds. The "Marker" can be positioned (moved up or down) on the display screen by using the "Minus" button (6) or the "Plus" button (7). Once the machine is stopped at a desired position, the "Marker" can be activated and set to the desired position.
Once the "Marker" is set, the operator can watch the view of the rearward camera that is shown on the display while backing up the machine. The operator can stop the machine at the desired position when the green line on the display is in line with the object at the desired location.
For example, the operator can stop the machine when the "Marker" is in line with the bottom edge of an earthen berm.
Note: After the "Marker" has been activated, if any other button on the display is pressed other than "Minus" button (6) or the "Plus" button (7), the "Marker" will be set to the current position on the display.
If the "Marker" is not set to the desired position, the "Marker" can be reset. In order to reset the "Marker", perform the following procedure:
1. The "Marker" must be turned off.
1. The "Marker" must then be turned back on.
1. The "Marker" must be moved to the desired position on the display screen with the use of the "Minus" button (6) or the "Plus" button (7) before any other button on the display is pressed.

Power ON/OFF
Power is supplied to the WAVS by use of a switched input. That is, power is supplied to the WAVS system when the ignition key switch is turned to the ON position.
The "Power ON/OFF" button (8) that is located on the display is disabled. Refer to the ""System Operation" " section of this document for an illustration of the power button. Refer to Illustration 20.

Single Camera Operation

Single Camera System Overview

The WAVS single camera system only has the automatic mode of operation. Refer to Table 8 or Table 7 in the ""System Operation" " section of this document. These tables provide information that describes the process in order to adjust the display settings for a single camera system. Make sure that the display is not in "Standby" mode.

Note: If the single camera system can be placed in manual mode, reconfigure the display. Press the "Camera Selection" button (1) and the "Contrast" button (4) simultaneously for 40 seconds. At the end of the 40 second interval, the green LED power light will flash once in order to indicate that this procedure was completed.

Note: The orientation for the camera image is set during installation. The rearward looking camera image is set to provide a "reversed" or mirror image, similar to a mirror view. If the camera image orientation is not correct, use the procedures listed in Table 7 in order to correct inverted and mirror image issues.

Single Camera System Details

Most applications of WAVS will use three cameras. If a single camera system is installed, the single camera configuration does not use the 251-4168 Switch . The Liquid Crystal Display (LCD) screen is normally off (no image) until the camera system is triggered manually or automatically to "wake up".

The display remains off so that the screen will not cause distractions. The customer has the option in order to select the type of input that will trigger the camera system to "wake up".

The "trigger 1" input must be wired to a supply voltage that is greater that +11 VDC. For example, in order to view the image of the rearward mounted camera, the machine must be placed in reverse gear. In this example, the source of the input voltage that is necessary to activate the "trigger 1" input could be the backup alarm or backing lights.

When the display powers up, the display is in the default mode and not in "Standby" mode. In order to select the "Standby" mode, press the "Standby Function ON/OFF" button (3) on the display unit. The display will go blank until the "trigger 1" input reaches a voltage of greater than +11 VDC. When the input voltage goes below +11 VDC, the display will once again go blank.

In order to exit the standby mode, press the "Standby Function ON/OFF" button again. The display will return to the default mode.

Note: In a single camera configuration, the "Camera Selection" button (1) will have no effect. In a single camera configuration, the "trigger 2" and "trigger 3" inputs will have no effect. The single camera operation can be used even if a 251-4168 Switch is installed. However, the operation will be defined in the multiple camera description that is shown below.

Multiple Camera Operation

Multiple Camera System Overview

The WAVS multiple camera system has two modes of operation: manual mode and automatic mode. Automatic mode is the preferred mode of operation. In the automatic mode, the display will provide the camera view or views that are defined by the configuration of the system. The configuration of the system is determined upon installation of the system.

Details of Multiple Camera Operation

In the multiple camera system, the default camera will usually be the camera that is positioned to look toward the rearward area of the machine. The default camera has the lowest priority. Therefore, camera 1 will be the camera that is used in order to view the rearward area of the machine.

For some applications of this product, the use of the standby feature may be preferable.

In order to activate the "Standby" feature, press the "Standby Function ON/OFF" button (3) on the display. In order to exit the "Standby" mode, press the "Standby Function ON/OFF" button (3) a second time. If no triggers are +11 VDC or higher, then the display will be blank. If a camera trigger becomes active, the camera view that has the active trigger will be shown on the display until the trigger voltage goes low (less than +11 VDC). If more than one trigger is active at the same time, the highest priority camera with an active trigger will be displayed.

If the "Standby" mode is not selected, WAVS will be in either of the following conditions:

Be in the default mode with no active triggers.
Be in the auto mode.

In the default mode, camera 1 will be shown on the display.

If WAVS is in the auto mode, the highest priority camera that has an active trigger will be shown on the display.

The WAVS system can be placed in manual mode at any time. The manual mode is the highest priority mode.

When the "Camera Selection" button is pressed, the operator assumes control of the view that is shown on the display. In order to return to the automatic mode, press and hold the "Camera Selection" button (1) for at least two seconds. Neither the "Standby Function ON/OFF" button nor any active trigger will be recognized by the display until the operator releases manual control.

Note: While in the manual mode, each time the camera selection button is pressed and if a 251-4168 Switch is installed, the display will scroll to the next camera view. If a camera is selected that is not connected to the WAVS, then the display will go blank.

Manual Mode For Multiple Camera Systems

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In MANUAL mode, camera views are not activated based on machine operation, therefore, the view that is displayed may not be the view that is normally shown. AUTOMATIC mode is recommended for machine operation in order to display the intended view for machine operation.

The "Manual" mode is used in order to override the "Automatic" mode. The "Manual" mode is used in order to display an alternate camera view or in order to change the camera view settings.

Note: Manual mode is intended for use only with the multiple camera applications. Manual mode is disabled for use in a single camera system.

Note: Once in the "Manual" mode, the red LED that is above and to the right of the "Camera Selection" button (1) will flash until the system is placed back into the "Automatic" mode.

Note: If the display does sequence to the next group of stored settings, this may alter the appearance of the view or the orientation of the camera view.

Camera Selection in Automatic Mode

In automatic mode, the view that will be shown on the display is determined by the following conditions:

The type of machine that WAVS is installed on
The operator of the machine
WAVS configuration

For example, if WAVS is configured to display the view from the rearward looking camera if an operator selects reverse, the moment the operator selects reverse, the view from the rearward looking camera will appear on the display.

Some machines, such as mining trucks, may have a camera that is mounted on either the right or left side of the machine. In order to view the side camera on the display, the operator would press the alternate camera switch that was installed during the WAVS installation process. The alternate camera switch should be a momentary-on push button or a rocker style switch. Refer to Table 4 for the recommended 275-5858 Rocker Switch and related parts.

Refer to Illustration 22 as an example of an alternate switch that has been installed on an operator's console.

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Illustration 22	g01253242
(50) Operator console (51) Alternate camera 275-5858 Rocker Switch

Note: The orientation for the camera image is set during installation. The rearward camera image is set to provide a "reversed" image, similar to a mirrored view. If applicable, the right side camera view and the front camera view should not be set to a "reversed" image. If the camera image orientation is not correct, contact service personnel immediately.

Troubleshooting

Troubleshooting WAVS

In order to troubleshoot the WAVS, power must be supplied to the system without starting the machine.

Before the WAVS is serviced, all cables for the cameras should be inspected. If a cable for a camera is pinched, this could cause a system short to machine ground. The display will shut off if a short is detected in one of the cables for a camera. Thus, the display will appear to have no power.

Note: The components of the video cables are not serviceable. If damage to the cable is found, the cable should be replaced. A damaged cable cannot be repaired.

Note: Access to the system components may be needed. Also, replacement of the system components may be needed. Therefore, the appropriate tools will be required in order to gain access to the switch, the camera(s), camera cables, and display cables.

Service Tools

The following service tools should be used to aid in troubleshooting the electrical system:

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Table 9
Tools List Description
Connector Repair Kit
Crimp Tool
Digital Multimeter
Terminal Repair Kit
Standard Socket Wrench Set (1/2 Inch Drive)
Metric Socket Wrench Set (1/2 Inch Drive)
Hand Tool Group (Screwdrivers)
Torque Wrench (1/2 Inch Drive)

Display Does Not Power Up

Apply power and observe the display. All of the LEDs will flash once as the system performs a "self-test" after power is supplied. The green LED that is above and to the right of button (8) (disabled power on/off button) should remain on.

No LED Indicators Illuminate - Check Supply Voltage

Access the WAVS cable assembly that is wired to the machine harness.
Note: The WAVS cable assembly may be located inside of the operator's console. Therefore, the cover for the console may need to be removed in order to gain access to the WAVS cable assembly and the fuse for the display.

Check the supply voltage at the fuse holder that is located in the WAVS cable assembly. Supply voltage should be present after the switch that is connected to the camera system. If voltage is not present, check the machine harness and fuses.

If voltage is present at the fuse holder, check for system voltage at the WAVS cable assembly connector.
1. Disconnect the WAVS connectors from one another. Check from pin 2 (ground) to another ground point on the machine. The ""System Schematic" " section of this document may help to determine another ground point.
  Note: Resistance should be 5 ohms or less. If the resistance is greater than 5 ohms, it is necessary to repair the ground circuit.
1. Check pin 1 (+12 to +24 VDC) to pin 2 (ground) of the WAVS connector that is wired to the machine harness. If the connector pins are damage, replace the connector pins. The wiring to the connector must be repaired if the wiring is open or if the wiring is shorted.
1. Inspect the connector pins in order to ensure that the pins are correctly seated.
1. If voltage is present at the WAVS connector and connector pins are properly seated, then reconnect the WAVS connectors.

Check for system voltage at the display connector. The display connector is located on the back of the display.
Note: Be sure to take note of the position of each cable to the display. Return each cable to the original position in order to reinstall the cover for the connectors. The cover for the connectors must be reinstalled. Failure to reinstall the cover can result in wire damage which would render the display inoperable. When the screws for the cover (71) are reinstalled, be sure that the wires (73) are clear of the threads of the screws.
1. Refer to Illustration 23. Remove the two screws (71) that hold the cover for the connectors in place.
1. Remove the cover for the connectors (72) .
  Note: The connector (74) that is shown in Illustration 23 is the same connector that is shown in Illustration 24. The connector (74) is on the end of the cable near the display. This cable is wired to the machine harness.
  The connector is pictured while still installed in a display connector socket. That is, the connector is shown as if viewed from the wire side of the connector in Illustration 24.
1. Check for voltage at the connector for the cable to the display. Perform a voltage check from pin 1 (red wire) to pin 2 (ground).

If system voltage is not present at the connector for the cable to the display, replace the cable. If system voltage is present at the connector, replace the display.

Display is Blank

If the display is blank after the self test, perform the following procedure:

Ensure that the system is not in "Standby".
Confirm that the LED that is located above the "Standby Function ON/OFF" button (3) and to the right of the "Standby Function ON/OFF" button (3) is off. In order to check that the system is in the "Standby" mode, refer to the information for "Standby" in the ""System Operation" " section of this document.
Note: In a multiple camera system, the system should be placed in manual mode. Select each camera in order to ensure that all cameras are being displayed. If the display is still blank, refer to Step 2.

Ensure that the brightness level is set correctly. In order to check the brightness level, refer to the brightness level information that is located in the ""System Operation" " section of this document. If the brightness level is set correctly, refer to Step 3.

If any or all camera views still fail to be seen on the display, then disconnect all camera video cables from the switch.

Remove the display cable from the switch.

Connect the video cable from each camera directly to the cable connector from the video display.

Check the display after each camera is connected to the cable to the display in order to verify that each camera is operating correctly.

If each camera is operating correctly after performing Step 6, then replace the switch.

If a camera does not have a good display, replace the camera.

If multiple cameras have been connected to the display one at a time and no image appears after working Steps 1 through 8, replace the display.

No Image from Rearward Looking Camera

In most camera systems, the machine will display a view from the camera looking rearward when you place the machine in the reverse gear. This is true in most single camera systems and in most multiple camera systems. If camera 2 is the rearward camera, the"C2" indicator that is on the display should be illuminated when the machine is placed in reverse gear. If the camera system is only a single camera system, then the "C1" indicator on the display should be illuminated when the machine is placed in reverse gear. When the display is in a standby mode, no image will be present on the display. A voltage must trigger the display in order for an image to appear on the display.

Before the following steps are executed, ensure that the multiple camera system is in the automatic mode. The single camera system will default to automatic mode.

Ensure that the air start supply line is locked out.

Ensure that the switch that applies power to the WAVS is in the ON position.

Place the machine in reverse gear. The rearward image should appear on the display.

If the image is not shown on the display, check the voltage at pin 4 (backup alarm circuit) to pin 2 (ground) on the WAVS connector for a multiple camera configuration or pin 3 (backup alarm circuit) to pin 2 (ground) on the connector for a single camera operation. The voltage should be equal to the system voltage of the machine.
Note: A voltage of +11 VDC or greater is required in order to trigger the WAVS. If there is insufficient voltage, the supply voltage for the backup alarm of the machine must be verified. Ensure that the voltage for the trigger is +11 VDC or greater. If the voltage for the trigger is +11 VDC or more, proceed to Step 5.

Refer to Illustration 24. Check the voltage at pin 4 (backup alarm circuit) to pin 2 (ground) at the display connector for the multiple camera configuration or check the voltage at pin 3 (backup alarm circuit) to pin 2 (ground) at the display connector for the single camera configuration. The voltage should be equal to the system voltage of the machine. If the voltage is good, proceed to Step 6.

Test the internal wiring for continuity.
1. Insert a jumper between 2 of the pins in the connector for the camera at the end of the cable from the cab.
1. Measure the continuity between the corresponding pins at the other end of the cable in the cab of the vehicle.
1. Repeat Step 6.a and Step 6.b for the remaining wires in each cable. If the continuity of a cable fails, proceed to Step 6.d.
1. Replace the cable. Test the image.
1. If the internal wires of the cables are good and the image is bad, replace the camera. Test the image.
1. If no image is present, replace the display.

Wrong Image Orientation for Rearward Looking Camera

The default orientation for the image for all cameras is set to "Mirror" image from the factory. The image that appears on the display for the rearward looking camera should appear as if looking in a rear view mirror.

Verify if the orientation of the image is correct.

If the orientation of the image is not correct, refer to ""Mirror Image" " in the ""Configuration" " section of this document. The information that is provided will describe the process in order to set the image to the correct orientation. Cameras that are not looking rearward on a machine must be set to "Normal" image.

No View on Camera 3 with the Optional Manual Trigger

This information relates only to a multiple camera system with the optional manual trigger. The view from camera 3 should appear on the display when the optional switch for the alternate camera is pressed. If the view for the camera does not appear on the display, perform the following procedure:

Ensure that the switch that applies power to the WAVS is in the ON position and that WAVS is in automatic mode.

Press the optional switch for the alternate camera. The corresponding view for the camera should appear on the display.

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Illustration 25	g01242450
Example of right side camera view

If the camera 3 view should not appear on the display, perform a voltage check at the WAVS connector first.

Check from pin 5 (alternate camera switch input) to pin 2 (ground). The voltage must be +11 VDC or higher. The voltage should be equal to the supply voltage of the machine. The machine supply voltage can be either +12 VDC or +24 VDC.
If the voltage is present at the WAVS connector, refer to Step 5.

Check for alternate switch input voltage at the display connector. The display connector is located on the back of the display.

Refer to Illustration 23 for information in order to gain access to the cable connector for the display. Refer to Illustration 24 in order to locate the appropriate pins.

Check for voltage at pin 5 (alternate camera input trigger). The voltage should be equal to the system voltage of the machine. If the voltage is present, replace the display. If voltage is not present, replace the cable for the display.

Blurred Image on Display

The cameras are a "fixed focus" type of device. There is no focus adjustment. If the image is blurred or out of focus, check to see if the camera lens is dirty. Clean and recheck.

No Color

Refer to the ""Configuration" " section of this document. In this section, follow the procedure that is in ""Accessing All System Options" " ""Color Adjustment" " in order to check and adjust the color level of the display view.

Note: In low ambient light levels, the image may appear to be in black and white. This is normal.

Inverted Image

If the image appears to be upside-down for any of the camera views, refer to the ""Configuration" " section of this document. In this section, follow the procedure that is in ""Accessing All System Options" " ""Inverted Image" " in order to check and adjust the image of each view. Reset as required.

Steps of Inspection for an Electrical Connector

Use the following steps to help determine if the connector is the cause of the problem. If a problem is found in the electrical connector, repair the connector and verify that the problem has been corrected.

Many of the operational procedures and the diagnostic code procedures in this troubleshooting guide will instruct you to check a specific electrical connector.

Intermittent electrical problems are often caused by poor connections. Simply disconnecting the connectors and then reconnecting the connectors can temporarily solve a problem at times. If this occurs, likely causes are loose terminals, bent terminals, improperly crimped terminals, corrosion, or improper harness routing.

The original source of the problem must then be identified in order to ensure that the problem does not reoccur.

Follow this procedure to thoroughly inspect the connectors in order to determine if the connectors are the cause of the problem:

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Illustration 26	g01242473
(79) Correctly routed harness (80) Correctly inserted plug (81) Incorrectly inserted plug (82) Incorrectly routed harness

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Illustration 27	g01242474
Proper installation of plug

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Illustration 28	g01242476
DT type sealing plug (85) Either a 9W-0844 Connector Socket or a 8T-8730 Connector Socket (86) Either a 9W-0852 Connector Pin or a 8T-8729 Connector Pin

Refer to Illustration 28.

The 8T-8729 Connector Pin (80) and the 8T-8730 Connector Socket (79) are designed to accept only one 16 or one 18 AWG sized wire.

Do not insert multiple wires of a smaller wire size. An incorrect wiring method would be to place two 24 AWG wires in one of the connectors.

The 9W-0852 Connector Pin (80) and the 9W-0844 Connector Socket (79) are designed to accept only one 14 AWG sized wire. Do not insert multiple wires of a smaller wire size. An example of an incorrect wiring method would be to place two 20 AWG wires in one of the connectors.

Check the Connectors

Ensure that the connector is properly locked. Also, ensure that the two halves of the connector cannot be pulled apart.

Verify that the latch tab of the connector is properly latched. Verify that the latch tab of the connector is fully latched.

Expected Result: The connector will securely lock. The connector and the locking mechanism are without cracks or breaks.

Results:

OK - The connector will securely lock. The connector and the locking mechanism are without cracks or breaks. Proceed to the following section.

NOT OK - A problem exists with the connector.

Repair: Repair the connector or replace the connector, as required.

STOP.

Perform a Pull Test on Each Connector Contact

Each connector contact should withstand 44.5 N (10 lb) of pull. Each wire should remain in the connector body. This test checks whether the wire was properly crimped in the contact and whether the contact was properly inserted into the connector.

The DT connectors use an orange wedge in order to lock the terminals together.

Check in order to ensure that the orange wedge is not missing and that the orange wedge is installed properly on the DT connectors.

Note: A crimp tool should always be used in order to crimp wires on connector contacts. Do not solder the terminals. Use the proper crimp tool.

Expected Result: Each connector contact should withstand 44.5 N (10 lb) of pull. Each wire remains in the connector body.

Results:

OK - Each connector contact withstands 44.5 N (10 lb) of pull. Each wire remains in the connector body. Proceed to the following section.

NOT OK - A problem exists with the connector.

Repair: Repair the wiring or replace the connector contact.

STOP.

Check the Wires for Nicks or Abrasions in the Insulation

Carefully inspect each wire for signs of abrasion, nicks, or cuts. The following areas are locations that should be checked:

Exposed insulation
Points of rubbing wire

Check all of the hold down clamps for the harness in order to verify that the harness is properly clamped. Also check all of the hold down clamps for the harness in order to verify that the harness is not compressed by the clamp. Pull back the harness sleeves in order to check for a flattened portion of wire. The flattened portion of wire is caused by the clamp that holds the harness.

Expected Result: The wires are free of abrasion, nicks, or cuts and the harness is properly clamped.

Results:

OK - The wires are free of abrasion, nicks, or cuts and the harness is properly clamped. Proceed to the following section.

NOT OK - A problem exists with the wiring.

Repair: Repair the wires or replace the wires, as required.

STOP.

Check the Connectors for Moisture or Corrosion

Ensure that the connector seals and the white sealing plugs are in place. If any of the seals or plugs are missing, replace the seal or plug. If necessary, replace the connector.

Check all of the wiring harnesses in order to verify that none of the harness wires do not make a sharp bend out of a connector. This will deform the connector seal and this will create a path for the entrance of moisture. Refer to Illustration 26.

Note: It is normal to see some minor seal abrasion on the connector seals. Minor seal abrasion will not allow the entry of moisture.

Thoroughly inspect connectors for evidence of moisture entry. If moisture or corrosion is evident in the connector, the source of the moisture entry must be found and the source of the moisture entry must be repaired. If the source of the moisture entry is not repaired, the problem will reoccur. Simply drying the connector will not fix the problem.

Likely paths for the entrance of moisture are from missing seals, improperly installed seals, nicks in exposed insulation, and improperly mated connectors.

Note: Moisture can also travel from one connector through the inside of a wire to another connector. If moisture is found in a connector, thoroughly check all connectors and wires on the harness that connect to that connector.

Note: If corrosion is evident on the contacts or the connector, use only denatured alcohol to remove the corrosion. Use a cotton swab or a soft brush to remove the corrosion. Do not use cleaners that contain trichloroethylene because trichloroethylene may damage the connector.

Expected Result: All of the connectors should be completely coupled and all of the seals should be completely inserted. The harness and the wiring should be free of corrosion, moisture, abrasion or pinch points.

Results:

OK - All of the connectors are completely coupled and all of the seals are completely inserted. The harness and the wiring are free of corrosion, moisture, abrasions or pinch points. Proceed to the following section.

NOT OK - A problem exists with the connector, the wiring or the wiring harness. Moisture is present.

Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled.

Verify that the repair eliminates the problem by operating the machine for several minutes and by checking again for moisture.

STOP.

Inspect the Connector Contacts

Verify that the contacts are not damaged. Verify that the contacts are properly aligned in the connector and verify that the contacts are properly located in the connector.

Expected Result: The contacts are properly aligned and the contacts appear undamaged.

Results:

OK - The contacts are properly aligned and the contacts appear undamaged. Proceed to the following section.

NOT OK - A problem exists with the connector contacts.

Repair: Repair the contacts and wiring and/or replace the contacts and wiring.

STOP.

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Illustration 29	g01242506
Retention of the connector (1) Pin contact (2) Socket contact

Note: This is especially important for intermittent problems.

Use a new pin contact. Insert the pin contact into each socket contact one at a time in order to check for a good grip on the pin contact by the socket contact.

Use a new socket contact. Insert the pin contact into each socket contact one at a time in order to check for a good grip on the pin contact by the socket contact. The pin contact is located on the mating side of the connector.

The connector contact should stay connected when the connector is held in the position shown in Illustration 29. The connector contact is either the pin contact or the socket contact.

Expected Result: The pin contacts and the socket contacts appear to be OK.

Results:

OK - The pin contacts and the socket contacts appear to be OK. Stop.

NOT OK - A problem exists with the connector terminal.

Repair: Replace the connector contact.

STOP.

System Schematic

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Illustration 30	g01242511
Schematic for single camera system

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Illustration 31	g01242515
Schematic for multiple camera system

Configuration

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Illustration 32	g01178371
Display keypad (1) Camera selection button (2) Automatic brightness ON/OFF (3) Standby function ON/OFF (4) Contrast button (5) Brightness button (6) Minus button (reduce brightness or contrast) (7) Plus button (increase brightness or contrast) (8) Power ON/OFF function may be disabled (9) Camera select LEDs (10) Button status LEDs (11) Light sensor

Accessing All System Options

In order to configure certain options or to verify certain options, there is a particular procedure that must be used in order to access the options.

Mirror Image

The display is supplied by Caterpillar with the "Mirror" image as the default. The mirror image is used only for a rearward mounted camera.

In order to provide the correct image for cameras that are mounted in other locations other than a rearward looking camera location (in a multi-camera system), the image must be changed to "Normal".

If a camera is mounted on the front end and right side of a machine, then the image must be changed to "Normal" in order to provide the correct image for the front and right side cameras.

In order to select "Mirror" or "Normal" image, perform the following procedure:

Press the "Camera Selection" button (1) in order to enter "Manual" mode.

Press and hold the "Camera Selection" button (1) and the "Standby Function ON/OFF" button (3) simultaneously for 20 seconds.
Note: The display will blink, then will change to the opposite image.

Press the "Camera Selection" button (1) again in order to select the next camera that is to be viewed and/or have the settings adjusted.

Press and hold the "Camera Selection" button (1) and the "Standby Function ON/OFF" button (3) simultaneously for 20 seconds in order to toggle the image.

Repeat Step 3 and Step 4 in order to toggle the last camera image.

Note: If the machine is equipped with a rearward looking camera, ensure that the image is set to the "Mirror" image. The proper orientation must be verified before the system is put into service.

Press the "Camera Selection" button (1) for two seconds in order to place the system in automatic mode. The LED that is above and to the right of the camera selection button will turn off.

Inverted Image

This option can be used in order to invert the image. The "Inverted Image" option will switch the orientation of the image so that the top will appear at the bottom of the display screen and the bottom will appear at the top of the display screen. Therefore, the image will appear to be upside-down if the inverted image option is selected.

In order to invert the image, perform the following procedure:

Press the "Camera Selection" button (1) in order to enter "Manual" mode. The LED that is above and to the right of the "Camera Selection" button (1) will flash in order to indicate that the system is in manual mode.

Press and hold the "Camera Selection" button (1) and the "Automatic Brightness ON/OFF" button (2) simultaneously for 40 seconds in order to invert the image of the camera view that is shown on the display screen.

Press the "Camera Selection" button (1) again in order to select the next camera that is to be viewed and/or have settings adjusted.

Again, press and hold the "Camera Selection" button (1) and the "Automatic Brightness ON/OFF" button (2) simultaneously for 40 seconds in order to invert the image of the camera view that is shown on the display screen.

Repeat Step 3 and Step 4 for the third camera.

In order to revert to a previous image, perform the following procedure:

Follow the preceding steps in order to select the appropriate camera.

Press and hold the "Camera Selection" button (1) and the "Automatic Brightness ON/OFF" button (2) simultaneously for 40 seconds.

Display Power ON/OFF

The display on/off button may be disabled. If the display on/off button is disabled, the button serves no other function. The LED that is above and to the right of the display on/off button will illuminate in order to show that the system is on.

Color Adjustment

The "Color Adjustment" option is used to vary the level of color on the display. The level of color of the display can be varied in order to show a full color image or a black and white image.

In order to access the color adjustment option, perform the following procedure:

Press the "Contrast" button (4) and the "Brightness" button (5) simultaneously in order to access this option.

Press the "Minus" button (6) or the "Plus" button (7) in order to change the level of color.

Press any other display button, other than the "Minus" button (6) or the "Plus" button (7), in order to exit the "Color Adjustment" option.

Abbreviations and Acronyms

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Table 10
Abbreviations and/or Acronyms	Description
A & I	Application and Installation
EMS	Electronic Monitoring System
FOPS	Falling Object Protective Structure
OEM	Original Equipment Manufacturer
OMM	Operation and Maintenance Manual
OHT	Off-Highway Truck
ROPS	Rollover Protective Structure
SAE	Society Of Automotive Engineers Inc.
SWB	Switch to Battery
SWG	Switch to Ground