Xerox ColorQube 9303 Series - Page 38

February 2013
2-14
ColorQube® 9303 Family
01-540-00, 01-544-00
Status Indicator RAPs
01-540-00, 01-544-00 +24V, +/-12V, +5V Failure RAP
01-540-00 The +24V, +12V, -12V and +5V supplies have shut down unexpectedly.
01-544-00 The IME +24V, +12V, -12V and +5V supplies have failed to switch on.
Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to GP 14. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
Switch off the machine, then switch on the machine, GP 14.
Check that the three LEDs on the top of the power supply unit illuminate within one minute of
switch-on, Figure 1.
The LEDs illuminate.
YN
Either the power supply unit is faulty or there is a short circuit. Refer to WD 9.4 and WD
1.4. Measure the voltage at pin 27 of PJ902 on the drum driver PWB. The voltage should
be greater than +2.5V, indicating the drum driver PWB is enabling the +24V, +12V, -12V
and +5V supplies in the power supply unit.
The voltage is greater than +2.5V.
YN
Check the condition of the drum driver power supply interface cable between PJDC2
on the power supply unit and PJ902 on the drum driver PWB. It should be correctly
and securely connected at each end, and should be undamaged. This cable carries
power control signals from and to the power supply unit.
The cable is good.
YN
Correct the cable connection or install a new drum driver power supply inter-
face cable, PL 1.15 Item 10, as necessary.
Switch off the machine, GP 14. Check pin 27 of PJ902 on the drum driver PWB. Pin
27 is short circuit to ground.
YN
Install a new drum driver PWB, PL 1.15 Item 4.
Repair the wiring, REP 1.1.
Either the power supply unit is faulty or there is a short circuit. Go to 01-525-00 +24V, +/-
12V, +5V Short Circuit and Overload RAP.
Refer to WD 9.4 and WD 1.4. Measure the voltage at pin 24 of PJ902 on the drum driver PWB.
This can be measured on the top of the connector, while it is connected to the drum driver
PWB. The voltage should be greater than +2.5V, indicating that the power supply is enabled.
The yellow LED on the power supply unit should also be lit, Figure 1.
The voltage is greater
than +2.5V.
YN
Check the condition of the drum driver power supply interface cable between PJDC2 on
the power supply unit and PJ902 on the drum driver PWB. It should be correctly and
securely connected at each end, and should be undamaged. This cable carries power
control signals from and to the power supply unit.
The cable is good.
YN
Correct the cable connection or install a new drum driver power supply interface
cable, PL 1.15 Item 10, as necessary.
Switch off the machine, GP 14. Check pin 24 of PJ902 on the drum driver PWB. Pin 24
is short circuit to ground.
YN
Install a new power supply unit, PL 1.15 Item 2.
Repair the wiring, REP 1.1.
Install a new drum driver PWB, PL 1.15 Item 4. The fault is still active.
YN
Perform SCP 5 Final Actions.
Go to 01H +24V Distribution RAP.
Other voltage supplies are inter-dependent. Also refer to the RAP’s that follow:
• 01D +5V Distribution RAP.
• 01E +12V Distribution RAP.
• 01F -12V Distribution RAP.
• 01L 0V Distribution RAP.
Figure 1 Component location
Three LEDs
Power supply unit
A
A
B
B