Kyocera Mita KM-4530 Service Manual page 170

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