Ricoh SH-P1 M020, Field Service Manual

Page: 253 / 312

534 D
AIO Fan Motor error • Mechanical overload on the AIO fan
mechanism
• AIO fan harness loose or broken
The CPU detects an AIO fan lock
signal for more than 2 seconds.
• Remove foreign materials from the AIO
fan.
• Turn the Power Switch Off and On.
• Connect the harnesses properly.
• Replace the AIO fan.
541 A
Fusing thermistor error • Thermistor disconnected
• Defective thermistor
• Fusing unit connected improperly
The fusing temperature remains lower
than 0
o
C for over 7 seconds after the
power relay switches on.
• Connect the fusing unit properly.
• Connect the thermistor.
• Replace the thermistor.
• This SC cannot be reset by turning the
power off and on.
• This SP should be reset by a CE.
• SP5810-01 can reset this SC.
542 A
Fusing temperature warm-up error • Defective thermistor
• Thermistor improper installation
• Defective fusing lamp
1: Thermistor detects that the rate of
heat increase is less than 7 degrees
per 2 seconds consecutively 5 times.
2: The fusing temperature did not
reach the standby temperature within
24 seconds at the center of the hot
roller after the main switch turned on.
This SC will appear when condition 1
and 2 occur at the same time.
• Install the thermistor properly.
• Replace the thermistor.
• Replace the fusing lamp.
• This SC cannot be reset by turning the
power off and on.
• This SP should be reset by a CE.
• SP5810-01 can reset this SC.
Service Call Conditions
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