Ricoh SH-P1 M020 Field Service Manual page 251

Primary Transfer PP output leak
The PWM duty output exceeded 50%
440 D
for longer than 200 ms, indicating a
leak in the charge roller current.
Main motor lock
The machine does not detect a main
motor lock signal within 1 second
after the main motor starts to rotate.
500 D
-or-
The machine does not detect a main
motor lock signal for 250 ms
continuously while the main motor is
rotating.
Exhaust fan motor error
530 D
The CPU detects an exhaust fan lock
signal for more than 2 seconds.
• High voltage supply board defective.
• Disconnect harness
• Development Bias CN loose
• Connect the harnesses properly.
• Replace the AIO.
• Replace High voltage power supply
board.
• Mechanical overload on the drive
mechanism
• Main motor defective
• Remove foreign materials on the drive
mechanism.
• Turn the Power Switch Off and On.
• Connect the harnesses properly.
• Replace the main motor.
• Mechanical overload on the Exhaust fan
mechanism
• Exhaust fan harness loose or broken
• Remove foreign materials on the drive
mechanism.
• Turn the Power Switch Off and On.
• Connect the harnesses properly.
• Replace the Exhaust fan.
Service Call Conditions
6
249