Electric Problems - Kyocera FS-1030MPF Service Manual

1-4-4 Electric problems

Problem
(1)The machine
does not operate
when the power
switch is turned on.
(2)Right cooling
fan motor does not
operate.
(3)Left cooling fan
motor does not
operate.
Causes
1. No electricity at the
power outlet.
2. The power cord is
not plugged in prop-
erly.
3. The top cover is not
closed completely.
4. Broken power cord.
5. Defective power
switch.
6. Blown fuse in the
power source PWB.
7. Defective interlock
switch.
8. Defective power
source PWB.
9. Defective control
PWB.
1. Broken right cooling
fan motor coil.
2. Defective harness
between right cooling
fan motor and control
PWB (YC27), or
improper connector
insertion.
3. Defective control
PWB.
1. Broken left cooling
fan motor coil.
2. Defective harness
between left cooling
fan motor and control
PWB (YC104), or
improper connector
insertion.
3. Defective control
PWB.
Check procedures/corrective measures
Measure the input voltage.
Check the contact between the power plug and the outlet.
Check the top cover.
Check for continuity. If none, replace the cord.
Check for continuity across the contacts. If none, replace
the power source PWB (See page 1-5-40).
Check for continuity. If none, remove the cause of blowing
and replace the power source PWB (See page 1-5-40).
Check for continuity across the contacts of interlock switch.
If none, replace the power source PWB (See page 1-5-40).
Replace the power source PWB (See page 1-5-40).
Replace the control PWB (See page 1-5-37).
Check for continuity across the coil. If none, replace the
right cooling fan motor.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Replace the control PWB (See page 1-5-37).
Check for continuity across the coil. If none, replace the left
cooling fan motor.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Replace the control PWB (See page 1-5-37).
1-4-19
2MH/2MJ/2MK/2ML