Pioneer SC-82 Service Manual page 9

5
Y
CN3794
SW DOWN MIX
L
C2703
L
CH
NM
OFF
R2707 R2709
5.6k V+12_A
330
V+
6
8 *C2707
7 *R2711
V+7_A
12 22u/50
4
5
V-
V-12_A
*IC2702
UPC4570G2-A
(1/2)
GNDA
*IC2702
UPC4570G2-A
(2/2)
V-
*R2727 3
4
*C2708
V-12_A *R2712
10
22u/50
1 12
V-7_A 8
2
V+
V+12_A
V-7_A
R2708 R2710
5.6k 330
C2704
CH
NM
LSSN
GNDD
VLSO
VLSCK
R2551
10
R2552
10
R2557
10
*IC2751
NJM4565MD
*R2715
R2558
10
270
Z3L
Z3R
R2760
6.8k
6.8k
R6743
*R2716
*R2559
2OUT
10
270
*IC2751
NJM4565MD
(2/2)
R2553
10
R2554
10
R2555
10
R2556
10
1. RESISTORS
NOTE
Unit: k-k , M-M or unless otherwise noted.
Rated Power: 1/10w unless otherwise noted.
Toleranee: (J)5% unless otherwise noted.
2125 : RS1/8SQ
NO MARKED : RS1/10SR
2. CAPACITORS
No marked Ceramic Capacitors are CKSRYB.
No marked Electrolytic Capaciters are CEAT(VSX and VSA series)
No marked Electrolytic Capaciters are CEAK(SC series)
CH:CCSRCH CFHX:CFHXSQ unless otherwise noted.
Unit: p-pF or u-uF unless otherwise noted.
Ratings: Capacity(F)/Voltage(V) unless otherwise noted.
1000p or less : CCSRCH, Over 1000p : CKSRYB
3. NM: No Mount
NM
2
NM
The ! mark found on some component parts should be replaced
3
NM
with same parts (safety regulation authorized) of identical designation.
5
NM
6
When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
NM
The > mark found on some component parts indicates the importance of the safety factor of the part.
GNDA
Therefore, when replacing, be sure to use parts of identical designation.
: The power supply is shown with the marked box.
5
6
*R3170
22
*R3169
22
61
62
61. AGND6
63
62. INR13
INR14/SWIN 63. INL13
64
INL14
*R3172 65
22
A_A_ANA_SWIN
INR15
66
*R3171
INL15
67
22
A_A_ANA_SBRIN
INR16/SBRIN2
68
A_A_ANA_SBLIN
INL16/SBLIN2
69
AGND7
70
BD3473KS2
INR17/RECR1
71
INL17/RECL1
72
INPUT SELECTOR
INR18/RECR2
73
& VOLUME
INL18/RECL2
V+7_A
74
RECR3
75
RECL3
76
79. AGND8
RECR4/SUB2R
77
80. AGND9
RECL4/SUB2L
78
79
80
*R2579
Z3LOUT 100
Z3ROUT
100
*R2580
SW2OUT
GNDA
R6748 R6747
NM NM
V-7_A
NJM4565MD
(1/2)
V-
C2805 IC2801 V-12_A_HP
R2827 R2809
3
4
10 1.0u/50 220
R2805 8
Q2803 (1/2)
2
NM
V+
NM
R2815
22k
C2813
C2814
R2816
22k
R2806
Q2803 (2/2) V+12_A_HP
NM
NM V+
6
8
C2806
R2828 R2810
4
10 1.0u/50 220 5
(2/2)
V-
IC2801
NJM4565MD
A_A_PRE_FL
A_A_PRE_FR
A_A_PRE_C
SW PRE AMP
V+12_A
(1/2)
V-
3
4
C2760
*R2763
A_A_PRE_SW1
22
1 22u/50
8
2
V+
R2759
15k
C2759
NM
CH
C3951
CH
NM
R6742
15k
V+
6
8 C3952
7 *R6745
A_A_PRE_SW2
22 22u/50
4
5
V-
V-12_A
A_A_PRE_SL
A_A_PRE_SR
A_A_PRE_FHFWL
A_A_PRE_FHFWR
6
40
39
40. INL2
38
39. INR2
INR1
38. INL1
37
AGND5
36
SUB1L
35
SUB1R
34
AGND4
33
ADCR
32
MICIN
IC3273 ADCL
31
AGND3
30
FRIN1
29
Z3MUTE
FLIN1
28
A_ADASW2OUT
SW2IN
27
SLIN1
26
Z3R *C6727
Z3RIN
10u/50
25
Z3L
22. SBLIN1 *C6728
Z3LIN
24 10u/50
21. AGND2
A_ADASBROUT
SBRIN1
23
A_ADASBLOUT
22
21
C3293
C3296
0.1u/50
V+7_A
GNDD
R2611
1k
R2612
1k
V+12_A_HP V+12_A
R2817
10
C2819 R2819
3216
1 470u/16 18
1/4W
NM
GNDA
(GNDHP)
NM
C2820
R2820
7
3216
470u/16 18
1/4W
R2818
10
HEADPHONE AMP
V-12_A_HP V-12_A
IC6703
HPF
CONT
H
ON
V+7_A
L
OFF
*R6777 *R3981
10 0
V+7_A
*Q6704
DTC124EUA
V+7_A2
ZONE2 Select
V+7_A2
*IC6703
TC4052BFT
*C6722
16 1
0Y
VDD 0.01u/16
15 2
2Y
2X
14 3 GNDA
GNDA
Y-COM
1X
8
*R3982
13 4 1
3Y
X-COM
100
12 5
Z2O_L
1Y 4
0X
(1/2)
11 6
1NH
*IC6702
3X
NJM4565MD
10 7
VEE
A
*C6719
9 8
VSS
B
NM
V-7_A2
GNDA
Z2O_R GNDA
V-7_A
*R3983 7
100
*C6723
0.01u/16
GNDA
TUNER
R3911
NM
GNDA
R3912
NM
C3972
ZONE2<->
TUNER
NM
GNDA
GNDTC
SC-82
7
AUDIO ASSY (1/2)
A
1/2
(SC-82 : AWX1756)
(SC-81 : AWX1759)
R2567
2125
0
V-7_A
GNDA
V+7_A
R2568
2125
0 *R2717
22
R3228
NM
C3228
NM
AMUTE
R6737
0
FHMUTE
SBMUTE
AMUTE
R2861 R2841
0
R2863
LSSN
0 PRESEL
R2865
5.6k
Z2VLSO
VLSO
R2867
VLSCK
5.6k
GNDD
V+6_AD
GNDD
V-12_A
PRESEL
SBMUTE
AMUTE
FHMUTE
A
A
2/2
PREOUT
*R3984
0
Z2LOUT
Z2ROUT
*Q6703
DTC124EUA
GNDA
*R6769
V+ 1.8k
2
*C6712 *C6714 *C6713
3
0.1u/50 0.1u/50 0.047u/50
V-
GNDA GNDA
*R6772
1.8k *IC6702
NJM4565MD
V+
(2/2)
6
8
*C6715 *C6717 *C6716
4
5 0.1u/50 0.1u/50 0.047u/50
V-
GNDA GNDA
V-7_A2
R3915
V+5_T
NM
R3914
NM
V+12_A
V+12_AB
V+5_T
*Q3901
!
NM
A_A_TU_R
C3970
NM
A_A_TU_L
GNDA
: Audio Signal Route
7
8
A
CN2503
9607S-15F
15 XMICDET
14 V-7_A
13 GNDA
12 GNDA
11 V+7_A
G
10 GNDA
9 MICOUT
8 GNDA
CN7010
7 HPL
6
GNDHP
5 GNDHP
4 HPR
3 GNDHP
R2545
2 AMUTE
0
1 XHPDET
B
CN2861
AKN7073-B
1
FHMUTE
10 R2840
2 XHPDET
0
3 NC
R2838
4
0 XMICDET
R2837
5
0 LSSN
R2836
6 PRESEL
10
R2835
10 7 AMUTE
R2834
8
10 SBMUTE
R2842
9 Z2MUTE
0
R2843
10 Z3MUTE
0
R2833
10 11 Z2VLSO
R2832
12
22 VLSO
R2831
13 VLSCK
22
14 GNDD
15 GNDD
16
DET+6AD
17 GNDD
18 TUSCL
19
TUSDA
20 TURST
21 TUIREQ
C
22 NC
23
Z2HPF
Z
PRESEL
CN3772
SBMUTE
AMUTE
FHMUTE
2/2
D
R3920
NM
R3921
NM
C3910
NM
*C3915
NM
CH
E
C3916
NM
*C3917
NM
CH
GNDTC
*CN3902
NM
TURST
1
2 TUSDA
TUSCL
3
TUIREQ
4
5 NC
GNDT
6
TR
7
V+5T
8
9 TL
F
A
1/2
9
8