SERVICE CALL CONDITIONS
B135/B138 4-4 SM
Code No. Symptom Possible Cause
LD unit beam pitch adjusted incorrectly 329 B
The LD unit HP sensor does not detect
the ON condition while changing the LD
unit position for correcting the LD
position or changing the dpi.
• After initialization of the SP modes,
SP2-109-3 or SP2-109-4 was not
executed.
• The harness is blocking the LD drive
(PCB), preventing adjustment of the
pitch.
Polygonal Mirror Motor Error 1: ON
Timeout
335
C
• I/F harness of the polygonal mirror
motor disconnected or defective.
• Polygonal mirror motor or polygonal
mirror motor driver defective.
• Polygonal mirror motor drive pulse is
not output incorrectly.
• GABIC cannot monitor XSCRDY
signal.
Polygonal Mirror Motor Error 2: OFF
Timeout
336
C
The XSCRDY signal is not issued
(HIGH: Inactive) within 2 s after the
polygonal mirror motor switches off.
• I/F harness of the polygonal mirror
motor disconnected or defective.
• Polygonal mirror motor or polygonal
mirror motor driver defective.
• Polygonal mirror motor drive pulse is
not output incorrectly.
• GABIC cannot monitor XSCRDY
signal.
Polygonal Mirror Motor Error 3:
XSCRDY Signal Error
337
C
The XSCRDY is not issued (HIGH:
Inactive) after the polygonal mirror
motor has been rotating normally for
600 ms.
• I/F harness of the polygonal mirror
motor disconnected or defective.
• Polygonal mirror motor or polygonal
mirror motor driver defective.
• Polygonal mirror motor drive pulse is
not output incorrectly.
• GABIC cannot monitor XSCRDY
signal.
Polygonal Mirror Motor Error 4:
Unstable Timeout
338
C
The XSCRDY signal is detected LOW
(Active) after the polygonal mirror motor
switches on, but the signal is not
detected LOW after 1 s has elapsed,
and not detected after another 500 ms
has elapsed.
• I/F harness of the polygonal mirror
motor disconnected or defective.
• Polygonal mirror motor or polygonal
mirror motor driver defective.
• Polygonal mirror motor drive pulse is
not output incorrectly.
• GABIC cannot monitor XSCRDY
signal.
To Next Page
Loading...
