Xerox ColorQube 9303 Series Service Manual page 41

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A
The ink reservoir heaters are good. If necessary, install a new Marking unit heater PWB,
92.10 Item
5. Perform
SCP 5
Final Actions.
Ink Melt Heaters Check
Procedure
Switch off the electricity to the machine,
GP
1.2. Disconnect PJ5AC from the
power supply
ink melt heaters by measuring the resistance across the pins of the PJ5AC harness as follows:
Black ink melt heater, pin 6 to pin 12. Expect a cold resistance of approximately 70-80
ohms.
Yellow ink melt heater, pin 6 to pin 13. Expect a cold resistance of approximately 70-80
ohms.
Cyan ink melt heater, pin 7 to pin 1. Expect a cold resistance of approximately 70-80
ohms.
Magenta ink melt heater, pin 7 to pin 11. Expect a cold resistance of approximately 70-80
ohms.
Check that pin 7 to chassis is open circuit.
Check that pin 6 to the chassis is open circuit.
The measured resistances are correct.
Y
N
Go to
WD
1.2. Check the wiring between PJ5AC and PJX to the ink melt heaters. Repair
the wiring as necessary, refer to
REP
assembly,
PL 93.10 Item
3.
The ink melt heaters are good. If necessary, install a new power supply unit,
Drum Heaters Check
Procedure
Switch off the electricity to the machine,
GP
1.2. Disconnect PJ5AC from the
power supply
drum heaters by measuring the resistance across the pins of the PJ5AC harness as follows:
Drum heater 1 first section, pin 15 to pin 16. Expect a cold resistance of approximately 40-
50 ohms.
Drum heater 1 second section, pin 15 to pin 17. Expect a cold resistance of approximately
40-50 ohms.
Drum heater 2 first section, pin 10 to pin 19. Expect a cold resistance of approximately 40-
50 ohms.
Drum heater 2 second section, pin 10 to pin 20. Expect a cold resistance of approximately
40-50 ohms.
Check that pin 15 to the chassis is open circuit.
Check that pin 10 to the chassis is open circuit.
The measured resistances are correct.
Y
N
Go to
WD
1.2. Check the wiring between PJ5AC on the
drum heaters. Repair the wiring as necessary, refer to
new drum,
PL 94.20 Item
1.
Go to
Thermal Cutout Check
ColorQube® 9303 Family
14, and disconnect the power cord. Refer to
unit. Check the electrical resistance of the four
1.1. If necessary, install a new ink loader melt plate
PL 1.15 Item
14, and disconnect the power cord. Refer to
unit. Check the electrical resistance of the two
power supply
unit, and PJX to the
REP
1.1. As necessary, install a
PL
Registration / Pre-Heaters Check
Procedure
Switch off the electricity to the machine,
1.2. Disconnect PJ5AC from the
tration/pre-heaters by measuring the resistance across the pins of the PJ5AC harness as fol-
WD
lows:
Registration pre-heater 1, pin 3 to pin 9. Expect a cold resistance of approximately 50-60
ohms.
Registration pre-heater 2, pin 2 to pin 8. Expect a cold resistance of approximately 50-60
ohms.
Check that pin 8 to the chassis is open circuit.
Check that pin 9 to the chassis is open circuit.
The measured resistances are correct.
Y
N
Go to
WD
1.2. Check the wiring between PJ5AC on the
the registration preheat assembly. Repair the wiring as necessary, refer to
necessary, install a new registration preheat assembly
The registration/pre-heaters are good. If necessary, install a new power supply unit,
Item
2.
Thermal Cutout Check
Procedure
Switch off the electricity to the machine,
2.
1.2. Disconnect PJ5AC harness on the
cutouts on the thermal cutout PWB, by measuring the resistance across the pins of the PJ5AC
harness as follows:
cutout for drum heater 1, pin 4 to pin 14. Expect a short circuit.
WD
cutout for drum heater 2, pin 5 to pin 18. Expect a short circuit.
Check that pin 4 and 5 to the chassis is open circuit.
The measured resistances are correct.
Y
N
Go to
WD
1.2. Check the wiring between PJ5AC on the
the thermal cutout PWB,
necessary, install a new thermal cutout PWB,
The thermal cutouts are good. Refer to
14, and check the voltage on PJ902 pin 1 or pin 2 on the
+2.5V. Check the voltage on PJ902 pin 33 on the
voltages are good.
Y
N
Install a new drum driver PWB,
Check the condition of harness between PJDC2 of the
drum driver
PWB. The harness is good.
Y
N
Repair the harness,
REP
1.1.
Install a new power supply unit,
February 2013
2-17
GP
14, and disconnect the power cord. Refer to
power supply
unit. Check the electrical resistance of the regis-
power supply
PL 88.10 Item
GP
14, and disconnect the power cord. Refer to
power supply
unit. Check the continuity of the thermal
power supply unit
PL 88.10 Item
11. Repair as necessary, refer to
PL 94.20 Item
11.
WD
9.4. Switch on the electricity to the machine,
drum driver PWB
drum driver PWB
is greater than +2.5V. The
PL 1.15 Item
4.
power supply unit
PL 1.15 Item
2.
Status Indicator RAPs
WD
unit, and PJ140 to
REP
1.1. As
1.
PL 1.15
WD
and PJ140 to
REP
1.1. As
GP
is greater than
and PJ 902 of the
01A

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