Kyocera KM-4230 Service Manual page 519

2A3/4
Problem
(2)
The drive mo-
tor does not
operate
(C200).
(3)
The scanner
motor does
not operate.
(4)
The upper lift
motor does
not operate.
(5)
The lower lift
motor does
not operate.
3-6-74
Causes
Defective drive
motor.
Defective main
PCB.
Broken scanner
motor coil.
Poor contact in the
scanner motor
connector termi-
nals.
Defective scanner
control PCB.
Broken upper lift
motor coil.
Poor contact in the
upper lift motor
connector termi-
nals.
Defective engine
PCB.
Broken lower lift
motor coil.
Poor contact in the
lower lift motor
connector termi-
nals.
Defective engine
PCB.
Check procedures/corrective measures
Run maintenance item U030 and check if
the drive motor operates when CN12-B4 on
the engine PCB goes low. If not, replace the
drive motor.
Run maintenance item U030 and check if
CN1-113 on the main PCB goes low. If not,
replace the main PCB.
Check for continuity across the coil. If none,
replace the scanner motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check if the motor drive coil energization
pulse signals are output at CN5-5, CN5-6,
CN5-7, CN5-8 and CN5-9 on the main PCB
when maintenance item U073 is run. If not,
replace the main PCB.
Check for continuity across the coil. If none,
replace the upper lift motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check if 24 V DC is output across CN8-A2
and CN8-A3 on the engine PCB right after
the upper drawer is installed. If not, replace
the engine PCB.
Check for continuity across the coil. If none,
replace the lower lift motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check if 24 V DC is output across CN8-A4
and CN8-A5 on the engine PCB right after
the lower drawer is installed. If not, replace
the engine PCB.