SERVICE CALL 26 July 2002
4-10
No.
Definition
Symptom Possible Cause
Engine startup error 670 D
Just after the main power is turned on
or the machine is recovering from
auto off mode, the engine ready
signal assertion fails.
Just after the main power is turned
on, the engine does not respond.
• Defective controller board
Controller-to-operation panel communication error at startup 672 D
After powering on the machine,
communication between the controller
and operation panel does not begin,
or the communication is interrupted
after a normal startup.
• Controller stalled
• Controller board installed incorrectly
• Defective controller board
• Operation panel connector loose or
defective
• Poor connection of DIMM and optional
boards on the controller board
SBU/IPU communication error 685 D
While data is sent between the
scanner and BICU board, a
communication error has occurred.
• Defective scanner unit cable
• Defective SBU board
• Defective BICU board
PER command error 687 D
Some image data is transferred. →
The controller does not report the
necessary memory address.
• Poor connection between BICU and
controller
• Defective BICU
• Defective controller
Finisher jogger motor error (500-sheet finisher) 720 B
• The finisher jogger H.P sensor
remains de-activated for a certain
time when returning to home
position.
• The finisher jogger H.P sensor
remains activated for a certain time
when moving away from home
position.
• Jogger HP sensor defective
• Jogger motor defective
• Defective finisher control board
• Defective BICU
• Defective Ex-IOB
• Incorrect installation
Finisher jogger motor error (1000-sheet finisher) 722 B
The finisher jogger H.P sensor
remains de-activated for a certain
time when returning to home position.
The finisher jogger H.P sensor
remains activated for a certain time
when moving away from home
position.
• Jogger HP sensor defective
• Jogger motor defective
• Defective finisher control board
• Defective BICU
• Defective Ex-IOB
• Incorrect installation
Finisher staple hammer motor error (1000-sheet finisher) 724 B
Stapling does not finish within 600 ms
after the staple hammer motor turned
on.
• Staple jam
• Stapler overload caused by trying to
staple too many sheets
• Staple hammer motor defective
• Defective finisher control board
• Defective BICU
• Defective Ex-IOB
• Incorrect installation
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