Yamaha DVR-S100 Service Manual page 79

A B
1
I BLOCK DIAGRAM
▼SW-S100
2
CN302
⑬
⑨ ⑩ ⑪
⑫
⑤ ⑥ ⑦ ⑧
SW-PRT
① ② ③ ④
3
4
5
6
7
C D
See page 108~110 SCHEMATIC DIAGRAM
IC203 IC202
UPC4570 UPC4570
4 2 6 8
4 2
IC1
UPC4570
MUTE
CN302 ⑫
6
8
IC1
UPC4570
JK3 Headphone out
4
2
IC3
UPC4570
MUTE
CN302 ⑫
6 8
IC3
UPC4570
IC4
UPC4570
6
8
MUTE
CN302 ⑫
+B2 D211
TR401
D212
-B2
D214
TR402
E F
IC202
UPC4570
4 2
TR203
R245
TR204
R246
TR206
TR207
6
1
0.22Ω/3W
IC2
TR2
Over Current
STK402-940
Detect
TR3/TR1
TR7
5
3
0.22Ω/3W
IC2
Over Current
STK402-940
Detect
TR8/TR1
16 11
0.22Ω/3W
IC2
TR10 Over Current
STK402-940
Detect
TR11/TR9
TR15
12
20
0.22Ω/3W
IC2
Over Current
STK402-940
Detect
TR16/TR9
23
21
0.22Ω/3W
IC2
Over Current
STK402-940
TR17 Detect
TR18/TR9
+B1
3 1
+12v IC402 D403
3
1
IC401
D404
3 2
-12v IC403
-B1
Relay Control
G H
IC201
STK404-050
2
10
1
TR205
IC204/IC205
UPC4570
TR202
Rear Speaker Lch
DC Signal Detect
TR4/TR5
Rear Speaker Rch
SW-PRT TR6
CN302①
TR14
Front Speaker Lch
DC Signal Detect
TR12/TR13
Front Speaker Rch
Center Speaker
TR19
Protection
Circuit
TR209/TR210
SW-PRT
CN304 ①
RY401 F401
I J
DVR-S100/NX-SW100
Sub Woofer
CURRENT
DETECTOR
79