User manual

95.08.23.11.30
Color LaserWriter 12/600 PS Basics & Theory 1–121
Notes:
1 When starting the temperature control, the printer individually turns on
the upper and lower fuser heaters and monitors them for breakage with
the
FXSTS signal.
2 To reset the fuser assembly abnormality detection circuit, turn off the
printer for about 30 minutes or discharge jumper JP102 on the DC
controller board.
Upper/lower heaters OFF
Only upper
heater ON
Upper Fuser
Heater Drive signal
(/FXUON)
(/FXLON)
Lower Fuser
Heater Drive signal
Only lower heater ON
Upper/lower heaters ON