Ricoh B089 - Page 414

SERVICE CALL CONDITIONS
B089/B093 7-6 SM
Code No. Symptom Possible Cause
Paper tray motor lock (optional paper
tray unit)
506 B
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.
• Paper tray unit motor defective
• Too much load on the drive
mechanism
Rear fence drive error (optional LCT) 508 B
The return position sensor is not
activated after the rear fence drive
motor has been on to lower the tandem
tray for 8 seconds.
• Rear fence motor defective
• Return position sensor defective
• Too much load on the drive
mechanism
Side fence drive error (optional LCT) 509 B
The side fence positioning sensor is not
activated for more 3 seconds when the
paper stack in the left tray is moved to
the right tray.
The side fence close sensor is not
activated for more 3 seconds after
moving the paper stack to the right tray.
• Side fence motor defective
• Side fence position sensor defective
• Side fence close sensor defective
• Too much load on the drive
mechanism
LCT lower limit error 510 B
The lower limit sensor does not activate
within 8 seconds after the tray has been
lowered.
• Tray lift motor defective
• Poor connection of the tray lift motor
• Lower limit sensor defective
• Too much load on the drive
mechanism
Paper tray error 520 B
An error occurs (i.e motor error, or
sensor error, etc) for any paper tray.
• A defective motor
• A defective sensor
• Too much load on the drive
mechanism
Fusing thermistor open 541 A
The fusing temperature detected by the
thermistor was below 0 °C for 5
seconds.
The fusing temperature does not rise
+15 °C (center) or +12 °C (at the ends)
five times within 2 minutes after the
fusing lamps have been turned on.
• Fusing thermistor defective or out of
position
• Fusing lamp open
• Fusing thermostat open
• Power supply board defective
• Poor connection of the fusing unit
Fusing temperature warm-up error 542 A
The fusing temperature does not reach
the standby temperature within 20
seconds after the main switch is turned
on.
• Fusing thermistor defective or out of
position
• Fusing lamp open
• Fusing thermostat open
• Power supply board defective
• Poor connection of the fusing unit
Fusing overheat error 1 543 A
A fusing temperature of over 231°C is
detected for 5 second by the fusing
thermistor.
• Fusing thermistor defective
• Power supply board defective
• SBCU board defective
Fusing overheat error 2 544 A
A fusing temperature of over 251°C is
detected by the fusing temperature
monitor circuit in the SBCU board.
• Fusing thermistor defective
• Power supply board defective
• SBCU board defective