Troubleshooting Guide - Sharp FU-60SE-TA Service Manual

Always use the designated parts when replacing parts.
Service of the PWB ass'y
The electrical circuit is composed of the Display PWB, Switch PWB ass'y, Relay PWB ass'y and the Power supply
PWB ass'y.
No. Condition of defective
1
Does not operate.
Malfunction of key
2
(key is not in)
3
The fan motor does not
rotate.
4
Quiet lamp flickering
5
Cluster ion lamp (blue)
flickering
6
Abnormal noise is genera-
ted.
7
It is not operated with the
remote controller.
9
Dust collecting performan-
ce is bad.

TROUBLESHOOTING GUIDE

Cause and symptom
Improper wiring
The fan is abnormally heavy when rotated
by hand.(Motor breakaway and broken
PWB current fuse)
Broken current fuse of power PWB
(motor may be defective)
Broken current fuse of the power PWB
and varistor [VRS1] breakaway
PWB failure
Disconnection of power supply cord
assembly.
PWB failure
Improper assembly
The key is left pressed.
PWB failure
Improper wiring
Motor failure
The motor harness is not properly inserted
to the motor.
The motor harness is not properly inserted
to the PWB.
The Plasma cluster unit harness is not
properly inserted to the cluster unit.
The Plasma cluster unit harness is not
properly inserted to the PWB.
Motor failure
Improper mounting of the motor
Improper shape of the fan
Improper mounting of the fan
It is used near inverter illumination or the
illumination instrument is old and glimmers.
It is used in a place with direct sunlight.
PWB failure
No battery is in the remote controller.
The battery in the remote controller is dead.
The replacing period of the filter is passed.
The pre-filter is clogged.
There are obstacles near the air outlet or
air inlet.
21
Remedy
Check the insertion of connector,
repair, or replace.
Replace the motor and PWB.
Inspect the motor.
(Rotate the fan by hand as mentio-
ned above, and when it is heavy
replace the motor or PWB.)
Replace the PWB.
Replace.
Replace.
Replace.
Repair or replace.
Repair.
Replace.
Check the insertion of connector,
repair, or replace.
Replace.
Check the insertion.
Check the insertion.
Check the insertion.
Check the insertion.
Replace.
Repair.
Replace.
Repair or replace.
Change the installing place or
replace the illumination instrument.
Change the installing place.
Replace.
Put in a battery.
Replace the battery.
Replace the filter.
Clean.
Change the installing place.
FU-60SE-TA