Power switch on
Power check flow
Press the standby button
Check CON602
Check U611
Check D605
Check F609
No
No
Yes
Amber LED
ON?
5vs is Right?
No
Check Q312 , U302,U301 on
FPP board
Yes
Blue LED ON?
No
Check Q303 , U302,U301 on
FPP board
Check U304
Check D608,F608
Yes
12vt power
supply is correct?
-15Va,15Va power
supply is correct?
Yes
Check U304
Check D608,F608
No
Q614 Base pole
is oV?
No
Check Q311,U301,U302
Yes
Check Q614 collector is 0v?
Check U606
Check D603
Check F603,F604
Check Q615,Q611,Q610
Check U607
Yes
A
ELECTRICAL TROUBLESHOOTING GUIDE
3-2
Summary of Contents for M15 C/AH
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