Onkyo HT-R495 Service Manual page 23

1
No Power
Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained.
Of course, with actual repair there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly.
D
Process Check Point
F9001,F6901,F6902 (BAPS-2674/ BAAF-2690)
1
ANY PARTS (BAAF-2674/ BACLA-2673)
2
P7001 (BAPRC-2695)
3
C
P2802 (BAPRC-2695)
4
1 3 ca. +10V → +18V (+12VDG)
P2802 (BAPRC-2695)
5
7 ca. +5.8V(POFF)
P2802 (BAPRC-2695)
6
6 ca. 0 → +2.5V (M_PON)
RL9001 (BAPS-2674)
7
B
P9002 (BAPS-2674)
8
AC 100 V to 240 V
P7001B (BADIS-2672)
9
10
A
1. When being not turned on with remote control unit only, BADIS-2672 is abnormal.
2. When being not turned on with button on the main unit only, BADIS-2672 is abnormal.
1
2 3
No Good
Damaged PCB
OK
BAAF-2690
and
BACLA-2673
BAAF-2690
and
BACLA-2673
P7001(FFC)
BAPS-2674
BAPS-2674
BAPRC-2695
BAPS-2674
BAPS-2674
P7001(FFC)
BADIS-2672
2 3
4
BAPRC-2695
BAPS-2674
BAAF-2690
ANY PARTS on BAAF-2690
Check damage parts
Normal(OK) or Damage (No good)
Check the damage in the red framework part as shown with visual
inspection.
e.g. Broken, Burnout, Discoloration, etc.
4
5 6
Trouble Shoot
P7001
BADIS-2672
BACLA-2673
TX-SR292BT/SR393/SR494, HT-R398/R495
5 6
D
C
B
A