Sc Table - Gestetner G060 Service Manual

4.3 SC TABLE

SC No. Item
• Serial number stored in the
SC195 Serial Number
Mismatch
• The polygon mirror motor
SC201 Polygon motor
error
• The lock signal does not
SC220 Synch. The front (for K&Y) or rear (for
detection C&M) laser synchronizing
signal error 1 detector board, which is used
to determine the start timing of
220-001: Y
laser writing, does not send a
220-002: M
signal while the polygon motor
220-003: C
is operating normally and the
220-004: K0
LD is on.
220-005: K1
SM
Definition
• EEPROM defective
• BCU replaced without
memory does not consist of
the correct code.
• Polygon mirror motor
does not reach the targeted
• Abnormal GAVD
operating speed within 15
seconds after turning on.
• Cable disconnection
become low within 15
seconds after turning off the
polygon motor. .
• Disconnection of the
• Incorrect installation
• Defective LD unit
• Defective BCU
Related
Possible Cause
SCs
original EEPROM
error
behavior
cable between front
(K&Y) or rear (C&M)
synchronizing
detector board and
the LD unit
of front (K&Y) or rear
(C&M) synchronizing
detector board (the
beam does not target
the photo detector.)
4-9
Troubleshooting Procedure
Open the front cover and turn on the
main switch. Check the serial number
with SP5-811-002.
If the stored serial number is incorrect,
contact your product specialist for
details of how to solve the problem.
1. Turn the main switch off and on.
2. Check the cables.
3. Replace the polygon motor.
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 LD unit.
6. Replace the BCU.
SC TABLE
Type
G060