Kyocera KM-4230 - Page 428

2A3/4
3-5-9
Lower lift motor problem
• When the drawer is in-
serted, the lower lift limit
switch does not turn on
within 4 to 5 s of the lower
lift motor turning on.
• During copying, the lower
lift limit switch does not
turn on within 200 ms of
the lower lift motor turning
on.
Upper desk lift motor
problem*
3
• When the drawer is in-
serted, the upper desk lift
limit switch does not turn
on within 4 to 5 s of the up-
per desk lift motor turning
on.
• During copying, the upper
desk lift limit switch does
not turn on within 200 ms
of the upper desk lift motor
turning on.
C242
C243
Defective lower
lift limit switch.
Poor contact of
the lower lift
limit switch
connector ter-
minals.
Broken gears
or couplings of
the upper desk
lift motor.
Defective upper
desk lift motor.
Poor contact of
the upper desk
lift motor con-
nector termi-
nals.
Defective upper
desk lift limit
switch.
Poor contact of
the upper desk
lift limit switch
connector ter-
minals.
Check if CN15-4 on the en-
gine PCB goes low when the
lower lift limit switch is turned
on. If not, replace the upper lift
limit switch.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Replace the upper desk lift
motor.
Check for continuity across
the coil. If none, replace the
upper desk lift motor.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Check if CN3-11 on the desk
main PCB goes low when the
upper desk lift limit switch is
turned on. If not, replace the
upper desk lift limit switch.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Code Contents
Remarks
Causes
Check procedures/
corrective measures
*3: Optional for 42 ppm only.