SC TABLE
17 January, 2003
4-12
SC No.
Item
Definition
Possible Cause
Related
SCs
Troubleshooting Procedure
Type
SC 201 Polygon motor
error
•
The polygon mirror motor
does not reach the targeted
operating speed within 15
seconds after turning on.
•
The lock signal does not
become high within 15
seconds after turning off the
polygon motor.
•
The lock signal does not
become low within 0.2
second after the polygon
motor reaches the targeted
operating speed.
•
Polygon mirror motor
error
•
Abnormal GAVD
behavior
•
Cable disconnection
1. Turn the main switch off and on.
2. Check the cables.
3. Replace the polygon motor.
SC 220 Synch.
detection signal
error 1
220-001: Y
220-002: M
220-003: C
220-004: K0
220-005: K1
The front (for K&Y) or rear (for
C&M) laser synchronizing
detector board, which is used
to determine the start timing of
laser writing, does not send a
signal while the polygon motor
is operating normally and the
LD is on.
•
Disconnection of the
cable between front
(K&Y) or rear (C&M)
synchronizing
detector board and
the LD unit
•
Incorrect installation
of front (K&Y) or rear
(C&M) synchronizing
detector board (the
beam does not target
the photo detector.)
•
Defective LD unit
•
Defective BCU
•
Def5VLD
circuit
1. Turn the main switch off and on.
2. Check the cable connection between
front (for K&Y) or rear (for C&M)
synchronizing detector board and the
LD unit.
3. Check or reinstall the front (for K&Y)
or rear (for C&M) synchronizing
detector board.
4. Replace the front (for K&Y) or rear
(for C&M) synchronizing detector
board.
5. Replace the laser optics housing unit.
6. Replace the BCU.
7. Replace the PSU.