Ricoh MT-C1 Service Manual page 450

B140/B246 SERIES SERVICE MODE
744 B Booklet stapler motor error 2
The rear stapler unit saddle-stitch
motor does not start operation
within the specified time. The 1st
detection failure issues a jam error,
and the 2nd failure issues this SC
code.
B140/B246 Duplicated Number
750 B Cover interposer bottom plate motor error
• The bottom plate motor turns on
to raise the bottom plate but the
plate position sensor does not
detect the plate within 3 s.
• The bottom plate motor reverses
to lower the bottom plate but the
bottom plate HP sensor does not
detect the plate within 3 s.
750 B Finisher tray 1 (upper tray lift) motor error
The upper tray paper height sensor
does not change its status with the
specified time after the tray raises
or lowers. The 1st detection failure
issues a jam error, and the 2nd
failure issues this SC code.
B140/B246 Duplicated Number
753 B Z-Folding unit error 3
The HP sensor of the upper
stopper motor does not go off after
the stopper moved 128.7 mm.
753 B Return roller motor error
Occurs during the operation of the
lower tray pressure motor.
B246
• Rear motor disconnected, defective
• Rear motor overloaded due to
obstruction
B140
• Bottom plate position sensor defective
• Bottom plate HP sensor defective
• Bottom plate motor defective
• Cover sheet feeder main board defective
• Harnesses disconnected, defective
B246
• Tray lift motor disconnected, defective
• Upper tray paper height sensor
disconnected, defective
• Finisher main board connection to motor
loose
• Finisher main board defective
B140
• Upper stopper motor defective
• Upper stopper motor disconnected,
connector defective
• Upper stopper motor HP sensor
disconnected, defective
• Z-Fold main control board defective
B246
• Motor harness disconnected, loose,
defective
• Motor overloaded
• Home position sensor harness
disconnected, loose, defective
• Home position defective
4-62
15 February 2006