Ricoh K-C3 Service Manual page 129

B245/B276/B277/B268/B269 Service Manual
No.
Definition
500 B
502 C
503 C
504 C
506 C
541 A
542 A
Symptom
A current leak signal for
the transfer roller is
detected.
A current feedback signal
for the transfer roller is
not detected.
Main motor lock
A main motor lock signal
is not detected for more
than 7 consecutive
checks (700 ms) after the
main motor starts to
rotate, or the lock signal is
not detected for more
than 7 consecutive
checks during rotation
after the last signal.
Tray 2 lift motor malfunction (Optional paper tray units)
The paper lift sensor fails
to activate twice
continuously after the tray
lift motor has been on for
18 seconds.
Tray 3 lift motor malfunction (optional paper tray units)
The paper lift sensor fails
to activate twice
continuously after the tray
lift motor has been on for
18 seconds.
Tray 4 lift motor malfunction (optional two-tray paper tray unit)
The paper lift sensor fails
to activate twice
continuously after the tray
lift motor has been on for
18 seconds.
Paper feed motor lock (optional paper tray units)
A motor lock signal is not
detected for more than
1.5 s or the lock signal is
not detected for more
than 1.0 s during rotation.
Fusing thermistor open (center)
The fusing temperature
detected by the thermistor
is below 71C and is not
corrected after the main
power switch is turned on.
Fusing temperature warm-up error (center)
The fusing temperature
rises less than 7 degrees
in 2 seconds, and this
Possible Cause
High voltage supply board defective
Poor connection of the PCU
Transfer/separation unit set
incorrectly
Transfer roller damaged
Too much load on the drive
mechanism
Main motor defective
Paper lift sensor defective
Tray lift motor defective
Too much load on the drive
mechanism
Poor tray lift motor connection
Paper lift sensor defective
Tray lift motor defective
Too much load on the drive
mechanism
Poor tray lift motor connection
Paper lift sensor defective
Tray lift motor defective
Too much load on the drive
mechanism
Poor tray lift motor connection
Paper feed motor defective
Too much load on the drive
mechanism
Fusing thermistor defective or out of
position
Power supply board defective
Loose connectors
Fusing thermistor defective or out of
position
Fusing lamp open
18-Jan-06
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