XEROX DOCUCOLOR1632
Service Manual

10-356 Sub Heater On Time
The Sub Heater remained on for more than the specified time.

Procedure
Turn off the power, remove the Fuser Assembly. and allow it to cool down. Measure the resistance between P/J600-7 and P/J600-9 on the Fuser Assembly. The resistance is between 30 and 190 K Ohmís. Y N Check the Rear Thermistor for an open circuit and poor contact. If the check is OK, replace the Sensor Assembly (PL 7.2). Measure the resistance between P/J600-3 and P/J600-12 on the Fuser Assembly. The resistance is 20 Ohmís or less. Y N Replace the Fuser Assembly (PL 7.1). Reinstall the Fuser Assembly, turn the power on, enter dC140 [010-101]. The display is between 678 and 699. Y N Turn the power off. Check for an open or poor connection between P/J404-13 on the MCU PWB and P/J600-7 on the Fuser Assembly. If the check is OK, replace the MCU PWB (PL 13.1). There is Line Voltage measured at FS47 on the AC Drive PWB (PL 9.2). Y N There is +5VDC measured at P/J590-3 on the AC Drive PWB (PL 9.2). Y N Check the wires and connectors. If the check is OK, replace the MCU PWB (PL 13.1). There is +24VDC measured at P/J590-1 on the AC Drive PWB (PL 9.2) Y N Check the wires and connectors. If the check is OK, replace the MCU PWB (PL 13.1). Replace the AC Drive PWB (PL 9.2). Check the wires and connectors. If the check is OK, replace the Fuser Assembly (PL 7.1).

Figure 1 Fuser Front and Rear Thermistor CD

Status Indicator RAPs

6/02 2-190

Prelaunch Training/Review DC1632/2240

10-356