Replacement
Control Panel Processor PCB
The Control Panel Processor resides under the Cross Arm Bearing cover as shown next.
Follow these steps to remove the Control Panel Processor PCB:
1. Turn off the Workstation and unplug it from the AC outlet.
2. Remove Cross Arm Bearing cover as described in the Equipment Covers section of this chapter.
3. Disconnect and tag wiring from the CPP I/O PCB.
4. Remove two screws that secure the CPP/IO PCB to the chassis.
5. Remove the CPP I/O PCB from its connection to the CPP PCB.
6. Remove the top of the EMI shield from the CPP PCB (friction fit).
7. Disconnect wiring from connectors and tag each wire.
8. Remove four screws that secure the CPP PCB to the chassis.
9. Lift the CPP PCB out of the bottom half of the EMI shield.
52
Service
Periodic Maintenance
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