Ricoh M047 - Page 151

Service Call Conditions
SM Appendix 2-3 M047
Appendix:
Trouble-
shooting
Guide
Code No. Symptom Possible Cause
230 B
FGATE error
 Engine board defective
 Controller board defective
 Harness broken
The FGATE signal cannot be
detected for 1 second after the
machine has sent a start trigger.
The FGATE signal is still detected for
13 seconds after the machine has
detected the FGATE signal.
240 C
LD error
 Worn-out LD unit
 Disconnected or broken harness
of the LD unit
 LD unit defective
The machine detects LDB error a few
times consecutively when LDB unit
turns on after LDB initialization.
300 B
Charge roller current leak
 Cartridge (charge roller)
defective
 High voltage supply board
defective
60% or more of the PWM duty output
is detected for 0.2 seconds when the
charge bias is generated by the
charge roller.
330 B
Development bias leak
 Cartridge (development roller)
defective
 High voltage supply board
defective
60% or more of the PWM duty output
is detected for 0.2 seconds when the
development bias is generated by
the development roller.
520 B
Main motor lock
 Main motor defective
 Harness broken
 Too much load on the drive
mechanism
A main motor lock signal is not
detected for more than 700 ms after
the main motor starts to rotate, or the
lock signal is not detected for more
than a certain time during rotation
after the last signal.
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA