Service manual

9
(2) Operation does not start.
MSH-12DN -
MSH-15DN - a
" \
Check continuity of connector;
1
when you check to voltage.
Check power supply voltage on indoor
T
terminal bed. No
Is there 1 15V AC
between indoor terminal
*
Yes
Power supply
turn on
Check primary voltage of transformer
on power P.C. board. No
*
IS there 1 15V AC between connector
,CN204
@ - @ ?
Check secondary voltage of transformer
on
power P.C. board. No
-
Is there 13V AC between connector CN204
-
Does
signal mark display for an instant
on remote controller when POWER
No
Replace the batteries.
button pressed ?
beda-a?
.
Check fuse.
if no good, replace Fuse (Fll).
Redace
Transfonner(T11)
Yes
-
Replace remote controller.
I
Does emergency run stan by
No
pressing EMERGENCY button
? m
Indoor unit receive signal with
a beep tone when WWER button
pressed?
R@-
EIecmxlii control P.C. board
and power P.C. board.
-
No
Replace Receiver board.
i
I