Xerox 2135N - Phaser Color Laser Printer Quick Reference Manual page 36

Printer fault messages
Code Front panel message
T1 Fuser Upper Error T1 Power Off/On
T2 Fuser Lower Error T2 Power Off/On
1. Remove and install the fuser.
2. Test the thermistors inside the fuser using the test described in "Switch
scan test" on page 63.
3. Replace the fuser.
4. Replace the low-voltage power supply.
5. Replace the engine controller board.
T29 Temp Sensor Error T29, Power Off/On
T30 RH Sensor Error T30, Power Off/On
1. Test the temperature sensor or the relative humidity sensor using the
sensor test described in "Switch scan test" on page 63.
2. Inspect the wiring harness leading to the entrance sensor board.
3. Replace the temperature/humidity sensor board.
4. Replace the engine controller board.
T31 Roller Over Temp T31, Power Off/On
1. Inspect the fuser cooling fan. Ensure it is running correctly and is not
blocked.
2. Remove and install the fuser.
3. Test the thermistor inside the fuser using the test described in "Switch scan
test" on page 63.
4. Replace the fuser.
5. Replace the low-voltage power supply.
6. Replace the engine controller board.
T32 LED Over Temperature T32, Power Off/On
1. Ensure all the chassis cooling fan is operating and is not blocked.
2. Ensure the printer is operating in the correct temperature environment; the
printer's Service Menu : Print Diag Summary test page lists the ambient
temperature sensed by the printer.
3. Replace the LED heads.
4. Replace the engine controller board.
Service message
T1-Fuser Upper Error
T2-Fuser Lower error
T29-Temp Sensor Error
T30-RH Sensor Error
T31-Roller Over Error
T32-LED Over Temp Error
Service Guide 23