April, 2007 SERVICE CALL CONDITIONS 4-61
Booklet stapler motor error 1 SC743 B
The front 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.
• Front motor disconnected, defective
• Front motor overloaded due to
obstruction
Booklet stapler motor error 2 SC744 B
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.
• Rear motor disconnected, defective
• Rear motor overloaded due to
obstruction
Finisher tray 1 (upper tray lift) motor error SC750 B
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.
• Tray lift motor disconnected, defective
• Upper tray paper height sensor
disconnected, defective
• Finisher main board connection to motor
loose
• Finisher main board defective
Finisher tray 2 (lower tray lift) motor error SC751 B
The lower 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.
• Tray lift motor disconnected, defective
• Upper tray paper height sensor
disconnected, defective
• Finisher main board connection to motor
loose
• Finisher main board defective
Finisher pressure plate motor error SC752 B
Pressure plate motor operating
but the plate is not detected at
the home position within the
specified time. The 1st detection
failure issues a jam error, and
the 2nd failure issues this SC
code.
• Pressure plate HP sensor disconnected,
defective
• Pressure plate motor disconnected,
defective
• Pressure plate motor overloaded due to
obstruction