Fan Monitor PWA (MMS System Cabinet)
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| Illustration 1 | g01272361 |
| (1) Fan Monitor Board | |
The Fan Monitor board (FAN) (1) provides power to the System cabinet. Also, the Fan Monitor board (1) monitors the status of the three cooling fans. The board (1) also provides power for the three cooling fans in the I/O cabinet.
The cooling fans are located on the top of the system. Each fan has a status bit that is sent to the system controller.
The Fan Monitor board (1) also monitors the power supplies in the cabinet.
Refer to Systems Operation, Testing and Adjusting, RENR9988, "Internal Component Preremoval Steps (MMS System Cabinet)" in order to shut down the system and gain access to internal components.
- Disconnect all connectors. Refer to Illustration 2. Verify each labeling on the connector with the location of the wire. Verify each label on each connector.
- Disconnect the four white plastic standoffs that connect the board (1) to the left panel.
Note: The board (1) must be removed from the standoffs without bending the board (1).
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| Illustration 2 | g01272358 |
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Fan Monitor Board | |
- Position the board (1) in the cabinet over the four white standoffs that are connected to the left panel.
- Push the board (1) onto all the standoffs simultaneously. Verify that all standoffs are locked in place.
- Connect the wire connectors into the correct connectors on the board (1). Check the labels on each connector for proper placement. Refer to Illustration 2.
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| Fuse | Type |
| FAN-F1 | 250 VAC 3.15 Amperes |
| FAN-F2 | 250 VAC 3.15 Amperes |
| FAN-F3 | 250 VAC 3.15 Amperes |
| FAN-F4 | 250 VAC 3.15 Amperes |
| FAN-F5 | 250 VAC 3.15 Amperes |
Note: The number of the fuse relates to the number of the fan.
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