Kyocera Mita KM-4530, Service Manual

Page: 170 / 384

2BC/D
1-5-27
Code Contents
Remarks
Causes Check procedures/corrective measures
C3100
C3300
C4000
C4010
• The home position is not correct
when the power is turned on or copy-
ing the document placed on the con-
tact glass.
Optical system (AGC) problem
• After AGC, correct input is not ob-
tained at CCD.
Polygon motor synchronization
problem
• The polygon motor does not reach
the stable speed within 9 s of the
START signal turning on.
Polygon motor steady-state problem
• The polygon motor rotation is not
stable for 600 ms after the polygon
motor rotation has been stabilized.
BD steady-state problem
Poor contact of
the connector ter-
minals.
Defective scanner
home position
switch.
Defective engine
PCB or scanner
drive PCB.
Defective scanner
motor.
Insufficient expo-
sure lamp lumi-
nosity.
Defective engine
PCB.
Incorrect shading
position.
CCD PCB output
problem.
Poor contact in
the polygon motor
connector termi-
nals.
Defective polygon
motor.
Defective power
source PCB.
Defective engine
PCB.
Poor contact in
the polygon motor
connector termi-
nals.
Defective polygon
motor.
Defective power
source PCB.
Defective engine
PCB.
Check the connection of connector CN10
on the engine PCB and the continuity
across the connector terminals. Repair or
replace if necessary.
Replace the scanner home position switch.
Replace the engine PCB or scanner drive
PCB and check for correct operation.
Replace the scanner motor.
Replace the exposure lamp or inverter
PCB.
Replace the engine PCB and check for
correct operation.
Adjust the position of the contact glass
(shading plate). If the problem still occurs,
replace the scanner home position sensor.
Replace the ISU.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the LSU.
Check if 24 V DC is supplied to CN1-4 on
the main PCB. If not, replace the power
source PCB.
Check if 24 V DC is output from CN14-14
on the engine PCB. If not, replace the main
PCB.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the LSU.
Check if 24 V DC is supplied to CN1-4 on
the main PCB. If not, replace the power
source PCB.
Check if 24 V DC is output from CN14-14
on the engine PCB. If not, replace the main
PCB.