Xerox ColorQube 9303 Series Service Manual page 371

88-500-00 to 88-502-00, 88-512-00 Preheat Thermal Error
RAP
88-500-00 The registration / preheat assembly is too hot.
88-501-00 The registration / preheat assembly is too slow to warm up.
88-502-00 The registration / preheat assembly thermistor has failed.
88-512-00 The preheat heater went unstable while printing.
Initial Actions
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.
• If the fault code is 88-500-00 then install a new power supply unit,
• Check the 2 wiring harnesses leading to the registration / preheat assembly interface
PWB, Figure 1.
• Check the 2 wiring harnesses leading to the chassis bulkhead from the registration / pre-
heat assembly.
Procedure
Enter dC335 and test the registration / preheat thermistor. Select RaLPH in the component list.
NOTE: The registration / preheat thermistor is mounted on the underside of the heater plate.
The temperature read out changes as the RaLPH warms up, cools down and is approxi-
mately correct.
Y N
Install a new registration / preheat assembly,
bly, dC625.
Check the resistance at media path driver
should measure approximately 240K ohms cold or 42K ohms hot. The resistance is within
specification.
Y N
Check connections at media path driver
heat interface PWB, WD 8.6 PJ4 pin 3 and
pin 17 to registration / preheat interface
components as necessary.
Refer to WD 1.2. Disconnect PJ5AC from the
tance of the registration/pre-heaters by measuring the resistance across the pins of the PJ5AC
harness as follows:
• 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.
ColorQube® 9303 Family
WARNING
PL 1.15 Item
PL 88.10 Item 1. Calibrate the new assem-
PWB, WD 8.1 from PJ104 pin 16 to 17. Resistance
PWB, WD 8.1 PJ104 pin 16 to registration / pre-
media path driver PWB, WD 8.1
PWB, WD 8.6 PJ4 pin 2. Repair or install new
power supply unit. Check the electrical resis-
• Check that pin 9 to the chassis is open circuit.
The resistance of both pre-heaters is within specification.
Y N
Check the wiring between PJ5AC,
Registration / preheat assembly. Repair damaged wiring or install a new registration / pre-
heat assembly PL 88.10 Item
Install a new power supply,
2.
Thermal cut out on the
heater located under
the upper plate.
from PJ104
NOTE: Calibration of the registration/preheat assembly,
• The registration / preheat assembly is removed or replaced,
• The horizontal transport assembly is removed or replaced.
Calibration of the registration / preheat assembly is NOT required when:
• A printhead is replaced.
• The IOD assembly is removed or replaced.
February 2013
2-347
WD 1.2 on the power supply unit
1.
PL 1.15 Item 2.
Thermal cut out on the
heater located under
the lower plate.
Figure 1 Component location
dC625 is only required when:
88-500-00 to 88-502-00, 88-512-00
and PJ140 on the
Registration / preheat
interface PWB
Status Indicator RAPs