Oki LP-1040 Maintenance Manual page 191

(9) 2082/2087 problem analysis
◆ Check for shorts on TH01 and TH04 (fuser control thermistor).
(The thermistor is not functioning properly if its resistance value is 1k ohms or less.)
◆ Check for shorts on CBL-FUSER21, CBL-FUSER22, CBL-FUSER23, CBL-FUSER11,
CBL-FUSER12, and CBL-FUSER13.
If any problems are observed, replace those parts.
If there are no problems, replace the PCB-ASSY-ARC (RIP board) or the PCB-ASSY-AAC
(actuator control board).
(10) 2083/2088 problem analysis
Check the operational status of each of the fans.
Check the operation of BL02 (fuser fan) and BL06 (fuser A3 fan).
Does each fan operates properly?
Yes No
Replace any fans operating improperly.
Check for shorts on TH01 and TH04 (fuser control thermistor).
◆ Check TH01 and TH04.
If there is a problem, replace the TH01 or TH04.
◆ Check CBL-FUSER21, CBL-FUSER22, and CBL-FUSER23.
◆ Check for any clogging of the ozone filter.
Replace the ozone filter if it is clogged.
◇ Ensure that the halogen heater turns on and off every few seconds.
Note
Chapter 5 Engine Problems Troubleshooting
5-17