Yamaha RX-SL80 Service Manual page 53

A B
1
PRINTED CIRCUIT BOARD (Foil side)
POWER (1) P. C. B.
6
CH1
2
6
CH2
3
4
Point y
CH 1 : Emitter of Q9
CH 2 : Collector of Q4
5
V : 5V/div (CH 1)
V : 5V/div (CH 2)
DC, 1 : 1 probe, H : 4.0sec/div
CH 1
6
CH 2
↑ ↑
AC POWER ON AC POWER OFF
(Connect the power cable) (Disconnect the power cable)
7
C D E
Side B (Lead Free Solder Used)
B, G models only
POWER (3) P. C. B.
F G H
Side B (Lead Free Solder Used)
I J
RX-SL80
• Semiconductor Location
Ref. No. Location Ref. No. Location
D2 C2 D17 E4
D3 D2 D18 E4
D5 D2 Q3 C2
D6 C2 Q4 C2
D7 C2 Q5 C2
D8 E2 Q6 C2
D9 C2 Q8 C2
D10 C2 Q9 C2
D11 D3 Q11 D3
D13 F3 Q14 D2
D14 F3 Q15 D3
D16 G3
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