Xerox WorkCentre 4150 Service Manual page 69

03-800 Check HDD
03-800 The machine has detected a fault with the hard disk drive (HDD).
Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
NOTE: The main PWB has 4 test points, GND, +3.3V, +5V and +24V. The location of the test
points is shown on the Main PWB PJ location illustration.
Refer to Wiring Diagram 6. Perform the following:
1. Switch off the machine, then switch on the machine.
2. Check that the HDD PWB, PL 1.10 Item 17 is securely connected to CN20 on the Main
PWB.
3. Check that the HDD ribbon cable, PL 1.10 Item 18 is securely connected to the HDD
PWB and the HDD.
4. Install new components as necessary:
• HDD harness, PL 1.10 Item 18.
• HDD PWB, PL 1.10 Item 17.
• HDD, PL 1.10 Item 11.
• Main PWB, PL 1.10 Item 1.
WorkCentre 4150
03-900 GUI to MCB Communications Fault RAP
03-900 A user interface to main PWB communications error has been detected.
Procedure
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
NOTE: The main PWB has 4 test points, GND, +3.3V, +5V and +24V. The location of the test
points is shown on the Main PWB PJ location illustration.
Refer to Wiring Diagram 3. Perform the following:
1. Switch off the machine, then switch on the machine.
2. Check the wiring between CN2 on the Main PWB and CN7 on the UI PWB.
3. Install new components as necessary:
• UI PWB, PL 2.10 Item 4.
• Main PWB, PL 1.10 Item 1.
September 2006
2-11
WARNING
Status Indicator RAPs
03-800, 03-900