Kyocera Mita KM-2530 Service Manual page 188

2DF
Code Contents
C3100 Scanner carriage problem
• The home position is not correct
when the power is turned on or at the
start of copying using the bypass ta-
ble.
C3200 Exposure lamp problem
• Check the CCD input value for the
lighting status of the exposure lamp
100 ms after the exposure lamp is lit
and the carriage is moved to the
shading position. If the exposure lamp
does not light, turn off the lamp. After
500 ms, light the lamp again and, a
further 500 ms later, check the CCD
input.
The exposure lamp does not light af-
ter 5 retries.
C3300 Optical system problem
• After AGC, correct input is not ob-
tained at CCD.
C4000 Polygon motor synchronization
problem
• When the polygon motor starts, the
motor does not become stable even
after 20 s.
1-5-34
Causes Check procedures/corrective measures
Poor contact in Check the connection of connector CN37
the connector ter- on the main PCB and the continuity across
minals. the connector terminals. Repair or replace
if necessary.
Defective scanner Replace the scanner home position switch.
home position
switch.
Defective main Replace the main PCB or scanner drive
PCB or scanner PCB and check for correct operation.
drive PCB.
Defective scanner Replace the scanner motor.
motor.
Poor contact of Check the connection of connectors CN34
the connector ter- and CN37 on the main PCB, and the conti-
minals. nuity across the connector terminals. Re-
pair or replace if necessary.
Defective expo- Replace the exposure lamp or inverter
PCB.
sure lamp.
Defective main Replace the main PCB and check for cor-
PCB. rect operation.
Incorrect shading Adjust the position of the contact glass
position. (shading plate). If the problem still occurs,
replace the scanner home position switch.
Poor contact of Check the connection of connector CN34
the connector ter- on the main PCB, and the continuity across
minals. the connector terminals. Repair or replace
if necessary.
Defective main Replace the main PCB and check for cor-
PCB. rect operation.
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 (see page 1-6-20).
motor.
Defective power Check if 24 V DC is supplied to CN2-1 on
source PCB. the main PCB. If not, replace the power
source PCB.
Defective main Check if 24 V DC is output from CN8-10 on
PCB. the main PCB. If not, replace the main
PCB.
Remarks