Xerox ColorQube 9303 Series - Page 43

February 2013
2-19
ColorQube® 9303 Family
01A
Status Indicator RAPs
• Head 3 second half jetstack heater, pin 12 to pin 13. Expect a cold resistance of approxi-
mately 495-505 ohms.
• Check that pin 9 and pin 12 to the chassis is open circuit.
The measured resistances are correct.
YN
Go to WD 9.8. Check the wiring between PJ701 on the marking unit heater PWB and the
head 3 reservoir and jet stack heater. Repair the wiring as necessary, refer to REP 1.1. If
necessary, install a new printhead 3, PL 91.25 Item 2.
The head 3 heaters are good. If necessary, install a new marking unit heater PWB, PL 92.10
Item 5. Re-connect PJ701.
Upper Umbilical Heater Check
Procedure
Switch off the electricity to the machine, GP 14, and disconnect the power cord. Refer to WD
9.8. Disconnect PJ401 from the marking unit heater PWB. Check the electrical resistance of
the upper umbilical heater, by measuring the resistance across the pins of the PJ401 harness
as follows:
• Upper umbilical heater, pin 1 to pin 7. Expect a cold resistance of approximately 85-95
ohms.
• Check that pin 1 and pin 7 to the chassis is open circuit.
The measured resistances are correct.
YN
Go to WD 9.8. Check the wiring between PJ401 on the marking unit heater PWB and the
upper umbilical heater. Repair the wiring as necessary, refer to REP 1.1. If necessary,
install a new umbilical, PL 91.20 Item 10.
The upper umbilical heater is good. If necessary, install a new power supply unit, PL 1.15 Item
2.
Head 2 Reservoir and Jetstack Heaters Check
Procedure
Switch off the electricity to the machine, GP 14, and disconnect the power cord. Disconnect
PJ401 from the marking unit heater PWB. Check the electrical resistance of the head 2 reser
-
voir and jetstack heaters, by measuring the resistance across the pins of the PJ401 harness as
follows:
• Head 2 reservoir heater, pin 2 to pin 3. Expect a cold resistance of approximately 95-105
ohms.
• Head 2 first half jetstack heater, pin 5 to pin 4. Expect a cold resistance of approximately
495-505 ohms.
• Head 2 second half jetstack heater, pin 5 to pin 6. Expect a cold resistance of approxi-
mately 495-505 ohms.
• Check that pin 2 and pin 5 to the chassis is open circuit.
The measured resistances are correct.
YN
Go to WD 9.8. Check the wiring between PJ401 on the marking unit heater PWB and the
head 2 reservoir and jet stack heater. Repair the wiring as necessary, refer to REP 1.1. If
necessary, install a new printhead 2, PL 91.20 Item 2.
The head 2 heaters are good. If necessary, install a new marking unit heater PWB, PL 92.10
Item 5.
Head 4 Reservoir and Jetstack Heaters Check
Procedure
Switch off the electricity to the machine, GP 14, and disconnect the power cord. Refer to WD
9.8. Disconnect PJ401 from the marking unit heater PWB. Check the electrical resistance of
the head 4 reservoir and jetstack heaters, by measuring the resistance across the pins of the
PJ401 harness as follows:
• Head 4 reservoir heater, pin 8 to pin 9. Expect a cold resistance of approximately 95-105
ohms.
• Head 4 first half jetstack heater, pin 11 to pin 10. Expect a cold resistance of approxi-
mately 495-505 ohms.
• Head 4 second half jetstack heater, pin 11 to pin 12. Expect a cold resistance of approxi-
mately 495-505 ohms.
• Check that pin 8 and pin 11 to the chassis is open circuit.
The measured resistances are correct.
YN
Go to WD 9.8. Check the wiring between PJ401 on the marking unit heater PWB and the
head 4 reservoir and jet stack heater. Repair the wiring as necessary, refer to REP 1.1. If
necessary, install a new printhead 4, PL 91.20 Item 2.
The head 4 heaters are good. Re-connect PJ401. If necessary, install a new marking unit
heater PWB, PL 92.10 Item 5.
Figure 1 Component location
Power supply unit
Green LED = +3.3V ESTA
Yellow LED = +5V
Red LED = +50V
B
B