Onkyo TX-NR545 - Troubleshooting Hardware Issues; Troubleshooting No Sound (HDMI Input)

TX-NR545/646/747
5 4 3
2
1
6
D
C
A
B
D
C
A
B
5 4 3
2
1
6
Trouble Shoot
●Each voltage is shown as the reference value.
●各電圧は実測した標準値です
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.
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
Process Check Point Damaged PCB
1
J6718 (BAAF-1720)
● : +23V
BAAF-1720
2
P7003B (BADG-1742)
● No.1 pin : +15V
● No.3 pin : -15V
BAAF-1720
3
P801B (BAPRC-1760)
● No.5 pin : +15V
BATRM-1754
4
P8003A (BADG-1742)
● No.20 pin : +3.3V
BAPRC-1760
5
P8003A (BADG-1742)
● No.5 pin : Check signal
● No.7 pin : Check signal
BAPRC-1760
6
Q1501 (BADG-1742)
● No.7 pin : Check signal
BADG-1742
7
J6615 (BAAF-1720)
● : Check signal
BAAF-1720
8
Q6050,Q6060 (BAAF-1720)
● Base : Check signal
● Base : Check signal
BACLA-1746
9
P801B (BAPRC-1760)
● No.3 pin : +3V
BAAF-1720
10
P6080 (BAAF-1720)
● : Check signal
BAAF-1720
11 BATRM-1754
No Sound (HDMI in)
No Good
OK
No Good
OK
No Good
OK
No Good
OK
No Good
OK
No Good
OK
No Good
OK
No Good
OK
No Good
OK
No Good
OK
BAPRC-1760
BADG-1742
BACLA-1746
BATRM-1754
BAAF-1720