Kyocera Mita DC-1560, Service Manual

Page: 269 / 289

1AF
3-6-31
(4)
The lens mo-
tor does not
operate
(C40).
(5)
The toner
feed motor
does not op-
erate.
(6)
The optical
section fan
motor does
not operate.
(7)
The internal
cooling fan
motor does
not operate at
all or does not
turn at full
speed.
Broken lens motor
coil.
Poor contact in the
lens motor connec-
tor terminals.
Defective main
PCB.
Broken toner feed
motor coil.
Poor contact in the
toner feed motor
connector termi-
nals.
Defective main
PCB.
Broken optical sec-
tion fan motor coil.
Poor contact in the
optical section fan
motor connector
terminals.
Defective main
PCB.
Broken internal
cooling fan motor
coil.
Poor contact in the
internal cooling fan
motor connector
terminals.
Defective main
PCB.
Check for continuity across the coil. If none,
replace the lens motor.
Check for continuity across the connector
terminals. If none, replace them.
Run simulation 23 and check if the motor
drive coil energization pulse signals are out-
put at CN5-9, -10, -11 and -12 on the main
PCB. If not, replace the main PCB.
Check for continuity across the coil. If none,
replace the toner feed motor.
Check for continuity across the connector
terminals. If none, replace them.
Run simulation 10 and check if 24 V AC is
output across CN11-5 and CN11-6 on the
main PCB. If none, replace the main PCB.
Check for continuity across the coil. If none,
replace the optical section fan motor.
Check for continuity across the connector
terminals. If none, replace them.
Run simulation 20 and check if CN16-2 on
the main PCB goes low. If not, replace the
main PCB.
Check for continuity across the coil. If none,
replace the internal cooling fan motor.
Check for continuity across the connector
terminals. If none, replace them.
Run simulation 10 and check if CN11-15 on
the main PCB goes low (about 12 V at half
speed). If not, replace the main PCB.
Problem Causes Check procedures/corrective measures