Judgement Of Trouble By Every Symptom - Toshiba RAS-18N3KVR-E Service Manual

11-5. Judgement of Trouble by Every Symptom

11-5-1. Indoor unit (Including remote controller)
(1) Indoor unit is not operated.
NO
Is fuse (F01)
of indoor control
board blown?
Is voltage
(DC5V, 12V and 15V)
indicated on rear of
indoor control
board nor mal?
(2) Operation is not turned on though Indoor P.C. board is replaced
<Confirmation procedure>
Turn on power supply.
Does OPERATION indicator flash?
Turn off power supply once, and
5 second later, turn it on again.
Is OPERATION indicator flashing?
YES
Is it possible to turn on
A/C by pushing
[ ] button
on remote controller?
YES
Unit operates normally.
YES
NO
Does connection
YES
between PC Board
and reciver PCB
are connect properly?
NO
Reconnect housing
NO
Is wired correctly to white and
black lead wires of terminal block?
Does transmission mark
NO
on remote controller flash
normally,and is its signal
transmitted properly?
YES
Point remote to digital
camera. Can see infrared
ray at sending LED
on camera monitor
when push [ ] button?
YES
motor connector
between CN10 1 –
YES
YES
Microcomputer
NO
YES
– –
72
FILE NO. SVM-12070
Operation
Check Item
Considerable principle cause
Measures
Item by symptoms
NO
Remote controller is defective.
Refer to (5) "Troubleshooting
for remote controller".
NO
Replace remote control
Does fan
YES
3 short-circuit?
NO
is defective.
NO
Correct wiring
To item of
"Indoor unit is not operated".
Replace main
P.C. board
Replace fan
motor.