Ricoh U-C1 B051 - Tray Motor

SERVICE CALL 26 July 2002
4-12
No.
Definition
Symptom Possible Cause
• Output tray motor error (500-sheet finisher)
• Exit guide plate motor error (1000-sheet finisher)
731 B
The tray upper limit sensor does not
activate within a certain time after the
tray motor turned on (500-sheet
finisher).
The exit guide plate HP sensor does
not activate within a certain time after
the exit guide plate motor turned on
(1000-sheet finisher).
• Defective finisher control board
• Defective BICU
• Defective Ex-IOB
• Incorrect installation
500-sheet finisher
• Output tray motor defective
• Tray upper limit sensor defective
1000-sheet finisher
• Exit guide plate motor defective
• Exit guide plate HP sensor defective
Finisher shift motor error (1000-sheet finisher) 732 B
Roller shift does not finish within a
certain time after the shift motor
turned on.
• Shift motor defective
• Shift HP sensor defective
• Defective finisher control board
• Defective BICU
• Defective Ex-IOB
• Incorrect installation
Finisher communication error 740 D
• A connection error occurs.
• The UART reports a
communication error.
• In cases other than paper transport,
after an every-3-second command
is sent, the finisher does not
respond within 5 seconds.
• Defective finisher control board
• Defective BICU
• Defective Ex-IOB
• Incorrect installation
1st paper tray unit communication error 750 D
• A connection error occurs.
• The UART reports a
communication error.
• In cases other than paper transport,
after an every-3-second command
is sent, the paper tray unit does not
respond within 5 seconds.
• Defective paper tray unit control board
• Defective BICU
• Defective Ex-IOB
• Defective connection (Paper tray - main
unit)
Shift tray unit motor error 770 D
• The machine starts. → The tray
motor operates for 2.2 seconds. →
The sensor does not detect the
operation.
• The machine is printing. → The tray
motor operates for 2.2 seconds. →
The sensor does not detect the
operation.
• Defective tray motor
• Defective sensor
• Defective shift tray connector
Bridge unit error 791 D
The machine recognizes the finisher,
but does not recognize the bridge
unit.
• Defective connector
• Defective cable
Finisher error 792 D
The machine does not recognize the
finisher, but recognizes the relay unit.
• Defective connector
• Defective cable
• Incorrect installation