Toshiba RAS-09LKV-UL - Manual (Page 76)

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Operation
Measure
Item by symptoms
Check item
Conceivable principle
cause
Parts
(DB01,C27,T01
and IC02)
are defective.
FILE NO. SVM-10019
11-5. Judgement of Trouble by Every Symptom
11-5-1. Indoor unit (Including remote controller)
Turn off power
supply once, and 5
second later, turn it
on again.
Is OPERATION
lamp blinking?
NO
YES
NO NO
YES
YES
Is it possible to
turn on
Indoor unit by
pressing
[ ] button
on remote
control?
Does
transmission
mark on
remote control
flash normally,
and is its signal
transmitted
properly?
Remote control is
defective.
Refer to (5)
Remote Control."
Is fuse (F01)
of indoor control
board blown?
Is voltage
(DC 12V or 5V)
indicated on
indoor
control board
normal?
Microcomputer
is defective.
Replace main
P.C. board.
YES
YES
NO
NO
Unit operates
normally.
Reconnect housing
Does
Connection between
main PC Board
and display PCB are
connect properly ?
"Troubleshooting for
(RAS-09LKV-UL)
YES
NO
(1) Indoor unit is not operated.