Judgment Of Trouble By Every Symptom - Toshiba RAS-10N3AV2-A Service Manual

11-5. Judgment of Trouble by Every Symptom

11-5-1. Indoor Unit (Including Remote Controller)
(1) Power is not turned on (Does not operate entirely)
<Primary check>
1. Is the supply voltage normal?
2. Is the normal voltage provided to the outdoor unit?
3. Is the crossover cable connected properly?
4. Is the fuse (F01) blown?
( For 10/13k)
NO
Is fuse (F01)
of indoor control
board blown?
NO
Is voltage
NO
(DC12V or 5V)
indicated on rear of
indoor control
board normal?
• Be sure to disconnect the motor connector CN31 after shut off the power supply, or it will be a cause of
damage of the motor.
Turn off power supply once, and
5 second later, turn it on again.
Is OPERATION indicator flashing?
YES
Is it possible to turn on
power supply by pushing
[ ] button on
remote controller?
YES
Unit operates normally.
YES
Parts (R01, C01, C02,
R64, C27, DB01
T01) are defective.
YES
Parts of a power supply circuit
defective.
Does transmission mark
NO
on remote controller flash
normally,and is its signal
transmitted properly?
YES
Microcomputer
– 76 –
FILE NO. SVM-13001
Operation
Check Item
Considerable principle cause
Measures
Item by symptoms
NO
Remote controller is defective.
Refer to (5) "Troubleshooting
for remote controller".
is defective.
Replace main
P.C. board