Ricoh B064 SERIES Service Manual page 458

B064 SERIES SERVICE MODE
SC400: Image Development System (2)
SC No.
401 D Transfer output abnormal
When the transfer is output, the
feedback voltage remains higher
than 4V for 60 ms.
402 D Transfer output abnormal release detection
When the transfer is output, there is
hardly any feedback voltage within
60 ms even with application of 24%
PWM.
430 D Quenching lamp error
At the completion of auto process
control initialization, the potential of
the drum surface detected by the
potential sensor is more than –
400V, the prescribed value.
440 D Main motor lock
The main motor lock signal remains
low for 2 seconds while the main
motor is on.
441 D Development motor lock
The development motor lock signal
remains high for 2 seconds while
the development motor is on.
490 D Main fan abnormal
The main fan motor lock signal
goes high for 5 s while the fan is
on.
495 D Toner recycling unit error
Encoder pulse does not change for
3 s after the main motor switches
on.
496 D Toner collection bottle error
The toner collection bottle set
switch remains off when the front
door is closed.
497 D Toner collection motor error
The toner collection motor
connector set signal remains off for
1 s.
B064 Series/B140 Series
/B246 Series/D052 Series
CÓPIA NÃO CONTROLADA
Symptom
4-20
CÓPIA NÃO CONTROLADA
Possible Cause
• Transfer power pack defective
• Poor connection between the transfer
current terminal and the transfer power
pack
• Transfer power pack defective
• Transfer unit harness disconnected
• Transfer connector disconnected,
defective
• Quenching lamp defective
• Quenching lamp harness disconnected
• Quenching lamp connector disconnected
or defective
• Too much load on the drive mechanism
• Main motor defective
• Too much load on the drive mechanism
• Development motor defective
• Too much load on the motor, motor is
blocked by something
• Fan connector disconnected
• Too much load on the drive mechanism
• Toner end sensor detective,
disconnected
• No toner collection bottle set
• Poor connection on the switch connector
• Toner collection motor defective
• Motor connector disconnected
SM