03/2003
2-10
8850/ 510DP
LL-41, LL-45, LL-81
Status Indicator RAPs
LL-41, LL-45, LL-81 Fuser Warm-up Fault RAP
This RAP is used when the FUSER does not warm up when the control logic in the Fuser Con-
trol PWB attempts to increase the heat.
LL-41 is displayed when the Fuser heat does not exceed 210 degrees F (99 degrees C) within
two minutes.
LL-45 is displayed when the Fuser is in full warm-up mode for more than 10 minutes.
LL-81 is displayed when there is a Fuser warm-up fault with the Edge Heat Rod.
NOTE: Refer to BSD 10.1 while using this RAP.
Initial Actions
• Switch off, then switch on, the Printer, and confirm that the status code is displayed again.
• Enter the diagnostic mode and check that code [0261] (ADJ 3.2) is set the correct amper-
age.
• Switch off the Printer. Open the Fuser Drawer and check connector A27P/J1 for damage
or indications that it is not seating fully. Install the Fuser Service Harness (PL 10.1)
between A27P1 and A27J1.
• Ensure that the following connectors are properly seated: HR1P/J1, HR1P/J2, HR2P/J1,
HR2P/J2, A0P/J1A, A1P/J7, and A3P/J614.
NOTE: Refer to BSD 10.1 while using this RAP.
Procedure
An LL-81 is displayed.
YN
Remove the Web Oiler Assembly (REP 10.3) and access the Thermistors (REP 10.7).
The Thermistors RT2 and RT3 are touching the Heat Roll.
YN
Replace the Thermistor that is not in contact with the Heat Roll (REP 10.7).
The Thermistors RT 2 and RT3 are free of contamination.
YN
Clean the Thermistors with a cleaning cloth.
Check the wiring between the Thermistors RT 2 and RT 3 for and open or short. There
is a short or open in the wiring.
YN
Check the wiring from Connector A4P/J9 on the AC Module to the Center Heat
Lamp connectors HR2P/J1 and HR2P/J2 for and open or short. There is an open
or short in the wiring.
YN
Check the continuity between Connector L and Connector 1, and between Con-
nector N and Connector 2 on Filter Module (A10).
The Filter Module has continuity.
YN
Replace Filter Module A10 (PL 1.3).
Check the continuity of the Center Heat Rod filament. There is continuity in
the Heat Rod filament.
YN
Replace the AC Module Assembly (A1) (PL 1.1).
Replace the Center Heat Rod (HR2) (PL 10.2)
Repair the wire harness.
Repair the Harness.
Check the wiring between the Heat Rod connectors HR1P/J1 and HR1P/J2 and the AC Mod-
ule A4P/J9 for an open or short. There is a short or open in the wiring.
YN
Check for continuity of the Edge Heat Rod filament. There is continuity in the Heat Rod
filament.
YN
Replace the Edge Heat Rod (PL 10.2).
Check the continuity between Connector L and Connector 1, and between Connector N
and Connector 2 on Filter Module (A10).
The Filter Module has continuity.
YN
Replace Filter Module A10 (PL 1.3).
There is +12 VDC is present at Pin 8 of connector A1P/J7 on the AC Module.
YN
Check the harness between A1P/J7 and A3P/J614 for and open or a short. If the
harness is okay, refer to (1.2 DC Power RAP).
Replace the AC Module Assembly (A1) (PL 1.1).
Repair the wiring.
NOTE: The harness the goes between A27P/J1 and A0P/J1A is spared (PL 10.1)
A
A
B
B
C
C
D
D
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