2BT
1-5-8
Code
Contents
Remarks
Causes
Check procedures/corrective measures
A310
(C310)
A400
(C400)
A401
(C401)
A420
(C420)
A510
(C510)
Scanner carriage problem
• The home position is not correct
when the power is turned on or at the
start of copying using the contact
glass.
Polygon motor synchronization
problem
• The polygon motor does not reach a
stable speed within 19 s of the polygon
motor remote signal turning on.
Polygon motor steady-state problem
• The polygon motor rotation is not
stable for 400 ms after the polygon
motor rotation has been stabilized.
BD steady-state problem
• The VTC detects a BD error for 800
ms after the polygon motor rotation
has been stabilizad.
Main charger problem
• MC ALM signal is detected
continuously for 800 ms when MC
REM signal is turned on.
Poor contact of
the connector
terminals.
Defective scanner
home position
switch.
Defective main
PCB.
Defective scanner
motor.
Poor contact of
the connector
terminals.
Defective polygon
motor.
Defective power
source PCB.
Poor contact of
the connector
terminals.
Defective polygon
motor.
Defective power
source PCB.
Poor contact of
the connector
terminals.
Defective LSU.
Defective main
PCB.
Poor contact of
the high-voltage
transformer PCB
connector
terminals.
Defective high-
voltage
transformer PCB.
Leakage during
main charging.
Check the connection of connector CN15
on the main PCB and the continuity across
the connector terminals. Remedy or
replace if necessary.
Replace the scanner home position switch.
Replace the main PCB and check for
correct operation.
Replace the scanner motor.
Check the connection of connector CN3 on
the main PCB and the continuity across the
connector terminals. Remedy or replace if
necessary.
Replace the LSU.
Check if 24 V DC is present at CN1-2 on
the power source PCB. If not, replace the
power source PCB.
Check the connection of connector CN3 on
the main PCB and the continuity across the
connector terminals. Remedy or replace if
necessary.
Replace the LSU.
Check if 24 V DC is present at CN1-2 on
the power source PCB. If not, replace the
power source PCB.
Check the connection of connector CN18
on the main PCB and the continuity across
the connector terminals. Remedy or
replace if necessary.
Replace the LSU.
Replace the main PCB and check for
correct operation.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, repair or replace the cable.
Replace the high-voltage transformer
PCB.
Check and clean the main charger unit.
