Xerox ColorQube 9303 Series Service Manual page 39

01-542-00, 01-546-00 50V Failure RAP
01-542-00 The IME +50V or -50V supply has shutdown unexpectedly.
01-546-00 The IME +50V or -50V supply has failed to switch on.
Initial Actions
If possible, repair all the current listed faults, before performing this procedure, refer to dC123.
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 GP 14. Refer to WD 1.4
driver power supply interface cable between PJDC2 on the
the drum driver PWB. It should be correctly and securely connected at each end, and should
be undamaged, PL 1.15 Item 10. The ribbon cable is secure and in good condition.
Y N
Correct the cable connection or install a new drum driver power supply interface cable,
1.15 Item 10, as necessary.
Switch on the machine GP 14. The fault code is still present.
Y N
Perform SCP 5 Final Actions.
Check the 3 LEDs on the power supply are illuminated,
remain illuminated after 60 seconds.
Y N
Either the power supply unit is not enabled or is faulty or there is a short circuit on the
+50V or -50V output circuits.
NOTE: The voltage on PJ902 at pin 28 must be greater than +2.5V to enable +/-50V out-
puts.
Switch on the machine GP 14. Go to
pin 28 on the drum driver PWB. The voltage is greater than +2.5V.
Y N
Refer to WD 1.4 and WD 9.4. Check the drum driver power supply interface cable for
short circuits on PJ902 at pin 28 and pin 29. The cable is good.
Y N
Repair the drum driver power supply interface cable as necessary,
necessary, install a new drum driver power supply interface cable,
10.
Install a new drum driver PWB,
The control voltages are correct. If the +50V or -50V supplies are still not present, either
there is a power supply unit fault or there is a short circuit. Go to
Circuit and Overload RAP.
A
ColorQube® 9303 Family
and WD 9.4. Check the condition of the drum
power supply unit and PJ902 on
Figure 1. The 3 LEDs are on and
WD 1.4 and WD 9.4. Check the voltage on PJ902
REP
PL 1.15 Item
PL 1.15 Item 4.
01-530-00 +/-50V Short
A
Refer to WD 1.4 and WD 9.4. Check the red LED,
PJ902 pin 26 on the Drum driver PWB
voltage is greater than 2.5V.
Y N
Switch off the machine GP
shorted to ground.
Y N
Install a new power supply unit,
Repair the wiring, REP 1.1.
Install a new drum driver PWB,
PL
Power supply unit
1.1. If
February 2013
2-15
Figure 1, is illuminated and the voltage on
is greater than +2.5V. The LED is illuminated and the
14. Check PJ902 pin 26 on the drum driver PWB.
PL 1.15 Item 2.
PL 1.15 Item 4.
Three LEDs
Green = +3.3V ESTAR
Yellow = +5V, Red = +50V
Figure 1 Component location
Status Indicator RAPs
01-542-00, 01-546-00
Pin 26 is