Kyocera KM-4230 Service Manual page 430

Code Contents
C332 Scanner watchdog prob-
lem
• The main routine does not
run within 8.192 ms of the
main switch being turned
on.
C340 Original detection posi-
tion problem
• The original size detection
microcomputer in the main
PCB cannot store initial
data correctly.
C400 Polygon motor synchroni-
zation problem
• The polygon motor does
not reach the stable speed
within 9 s of the polygon
motor remote signal turn-
ing on.
C401 Polygon motor steady-
state problem
• The polygon motor rotation
is not stable for 600 ms af-
ter the polygon motor rota-
tion has been stabilized.
Causes
Defective main Replace the main PCB and
PCB. check for correct operation.
Poor contact of Check the connection of con-
the connectors. nector CN7 on the scanner
motor PCB and the continuity
across the connector termi-
nals. Repair or replace if nec-
essary.
Defective origi- Replace the original size sen-
nal size sensor. sor.
Defective main Replace the main PCB or
PCB or scan- scanner motor PCB and check
ner motor PCB. for correct operation.
Poor contact of Reinsert the connector. Also
the polygon check for continuity within the
motor connec- connector cable. If none, rem-
tor terminals. edy or replace the cable.
Defective poly- Replace the LSU.
gon motor.
Defective Check if 24 V DC is supplied
power source to CN6-5 on the engine PCB.
PCB. If not, replace the power
source PCB.
Defective en- Check if 24 V DC is output
gine PCB. from CN7-1 on the engine
PCB. If not, replace the engine
PCB.
Poor contact of Reinsert the connector. Also
the polygon check for continuity within the
motor connec- connector cable. If none, rem-
tor terminals. edy or replace the cable.
Defective poly- Replace the LSU.
gon motor.
Remarks
Check procedures/
corrective measures
2A3/4
3-5-11