Onkyo TX-NR545 Service Manual page 16

1
No Sound (Analog in)
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
J6718 (BAAF-1720)
1
●
: +23V
P7003B (BADG-1742)
●
No.1 pin : +15V
2
●
No.3 pin : -15V
J6615 (BAAF-1720)
3
●
: Check signal
C
Q6050,Q6060 (BAAF-1720)
●
Base : Check signal
4
●
Base : Check signal
P801B (BAPRC-1760)
5
●
No.3 pin : +3V
P6080 (BAAF-1720)
6
●
: Check signal
B
7
A
1
2 3
このトラブルシュートは故障している基板を特定するためのものです。
ここで見つかった故障基板だけが原因ではなく、電源トランス・接続
線の結線・はんだ付けなどの不具合も考えられます
Damaged PCB
No Good
BAAF-1720
OK
No Good
BAAF-1720
OK
No Good
BAAF-1720
OK
No Good
BACLA-1746
OK
No Good
BAAF-1720
OK
No Good
BAAF-1720
OK
BATRM-1754
2 3
4
BADG-1742
BAPRC-1760
BATRM-1754
BAAF-1720
●Each voltage is shown as the reference value.
●各電圧は実測した標準値です
4
5 6
Trouble Shoot
BACLA-1746
TX-NR545/646/747
5 6
D
C
B
A