Pioneer VSX 108 - AV Receiver Service Manual page 29

STK407-070 (MAIN PCB : IC204, IC205)
• 2-Channel AF Power Amplifier IC
Block Diagram
TR1
C1
R1
Ch. 1
10
IN
TR3 TR4
Ch. 1
11
NF
C.C.C.
12
BIAS
TR5
D1
R2
SUB
15
GND
00262419-010 (M62419FP) (MAIN PCB : IC203)
• Digital Sound Controller with Tone Control IC
Block Diagram
42 41 40 39
I/F
1 2 3 4
Ch. 1
+Vcc
OUT
6
D2
R3
TR9
TR6 TR11
R8
C2
R4
TR8
R5
D3
TR10
R6
TR12
TR7
R9
2
Ch. 1
-Vcc
38 37 36 35 34 33
5 6 7 8 9 10
Pre.
Ch. 1, 2
Ch. 2
+Vcc
OUT
9 3 7
TR21
TR23
R18
TR20
D5
TR22
TR24
TR19
R19
R17
8 1
Pre.
Ch. 2
-Vcc
-Vcc
32 31 30 29 28
11 12 13 14 15
VSX-108
D4
R13
TR14 TR13
TR18
C3
C4
R11
14
R14
TR16 TR15
R15
13
R16
TR17
R12
PT1
4 5
27 26 25 24 23 22
16 17 18 19 20 21
Ch. 2
IN
Ch. 2
NF
29