Xerox DocuColor 12/DCCS50, Service Manual

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1/05
2-182 DocuColor 12/DCCS50
OF10-5 External Heat Roll AC Power RAP
Reissue
Status Indicator RAPs
OF10-5 External Heat Roll AC Power RAP
The External Heat Roll Lamp was On continuously for 1 minute during the Standby Mode, but
the External Heat Roll did not reach operating temperature.
Initial Actions
Refer to BSD 10.2, 10.3, and 10.12 for the following procedure.
Check the following:
•
NVM location 777-003 External Heat Roll Temperature Control = 178 (NASG), 193 (ESG)
NVM location 777-012 External Heat Roll Ready Temperature = 165 (NASG), 188 (ESG).
NVM location 777-008 External Heat Roll Power Save Temperature = 165 (NASG) and
120 (ESG).
• Open the Drawer and extend it to the service position. Perform the following:
–
Remove the Oil Cartridge ( PL 8.1 ).
– Remove the Front Cover ( PL 8.1 ).
– Remove the Top Cover ( PL 8.2 ).
• Ensure that connectors P/J422B , P/J193 , P/J196 , and P/J100 are seated correctly on
the IOT Drive PWB, AC Driver PWB, SSR, Heat Roll Thermostat, and the External Heat
Roll Heater Rod; and there are no obvious crimped or broken wires.
Procedure
Close the Drawer. Cheat the Front Door Interlock. Switch on the power. Enter dC330 010-029
External Heat Roll Lamp . Press Start . ACH is measured momentarily between P/J100 -1
on the SSR and P/J15 -1 on the AC Driver PWB (ACN into AC Driver PWB).
Y N
There is +5 VDC between
P/J105
-1 on the SSR and GND.
Y N
There is +5 VDC between
P/J422B -3 on the IOT Drive PWB and GND.
Y N
Replace the IOT Drive PWB ( PL 9.2 ).
Go to Flag 1 on BSD 10.3 and check the harness for an open circuit. If the harness is
good, replace the IOT Drive PWB ( PL 9.2 ).
There is +4.5 VDC between P/J105 -2 on the SSR and GND.
Y N
Replace the SSR ( PL 9.3 ).
Press Start . The voltage at P/J105 -2 decreases momentarily to less than +1.0 VDC.
Y N
Replace the IOT Drive PWB ( PL 9.2 ).
Go to Flag 1 on BSD 10.3 and check the harness for an open circuit. If the harness is
good, replace the SSR ( PL 9.3 ).
Check the following areas of the harness for an open circuit:
•
Flag 2 on BSD 10.3.
• Flag 3 on BSD 10.3.
• Flag 14 ( Flag 24 w/ TAG P31 ) on BSD 10.2.
If the wires s are OK, check the following:
•
Disconnect the connectors to the components (External Heat Roll Thermostat, AC Driver
PWB, SSR, and the IOT Drive PWB). Check the connectors for broken, bent, or dirty pins.
Disconnect, then reconnect, the connectors several times to remove contaminants due to
oxidation.
• Check the External Heat Roll Control Thermistor ( PL 8.8 ). Replace the Thermistor if worn,
or dirty.
• Check the Drawer connector P700B at the rear of the Fuser for damaged pins. Check the
mating connector on the IOT, and ensure that the mounting plate for the IOT connector is
not bent or misaligned.
If the problem continues, replace the SSR ( PL 9.3 ). If the problem persists, replace the Varistor
PWB ( PL 9.6 ). If the problem continues, replace the IOT Drive PWB ( PL 9.2 ).
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