Pioneer SX-SW77 Service Manual page 23

5
NOTES
All Capacitors are in p-pF or uF
unless otherwise specified
Ratings : Capacity(uF)/Voltage(V)
Rated Voltage : 50V unless
otherwise specified
SQ : CKSQ**(2125size)
CH : CCSRCH(1608size)
(others : CKSRYB(1608size))
AMP POWER STAGE
IC3401
TAS5112ADCA
1
2
3
4
5
6
7
(SW)
PWM_M_8
8
PWM_P_8
9
10
11
1
12
13
14
15
16
17
(C)
PWM_M_7
18
PWM_P_7
19
R3404 220
VALID
20
21
1
22
R3403 1k 23
R3402 1k 24
R3401 1k 25
26
27
28
GNDD
UCOM
A 1/5
5-A4
5
6
TL : CFTLA
JQ : CEJQ
(others : CEAT)
All Resistors are in k-k Ω, M-M Ω or Ω
1/8W : RS1/8S***J(3216size)
1/10W : RS1/10S***J(2125size)
(others : RS1/16S***J(1608size)
(FL)
R3422
STBY
56
GND GND
55
GND GVDD
54 R3418
GREG BST_A
53
DVDD PVDD_A
C3414
52
GND PVDD_A
51
0.1
DGND OUT_A
50
GND OUT_A C3441
49
330p CH
AP GND
C3442
48
AM GND
330p CH
47
/RESET_AB OUT_B
C3412
46
BM OUT_B
0.1
SQ 2.7
45
BP PVDD_B
44
DREG PVDD_B
43 R3416
M1 BST_B
42
M2 BST_C
R3417
41
M3 PVDD_C
C3413
40
DREG_RTN PVDD_C
SQ
39
0.1
CP OUT_C
38
CM OUT_C
C3443
37
/RESET_CD GND
330p CH
36
C3444
DM GND
35
330p CH
DP OUT_D
34
/SD_AB OUT_D
C3411
33
/SD_CD PVDD_D
SQ 2.7
32
0.1
/OTW PVDD_D
31
GREG BST_D
R3415
30
GND GVDD
29
GND GND
R3421
STBY
(FL)
: AUDIO SIGNAL ROUTE (PWM)(Front Lch)
(FR)
: AUDIO SIGNAL ROUTE (PWM)(Front Rch)
(SL)
: AUDIO SIGNAL ROUTE(PWM)(Surround Lch)
(SR)
: AUDIO SIGNAL ROUTE(PWM)(Surround Rch)
(C)
: AUDIO SIGNAL ROUTE(PWM)(Center ch)
(SW)
: AUDIO SIGNAL ROUTE(PWM)(Sub Woofer ch)
6
7
A 5/5
MAIN ASSY
(WYXCN,WVXCN:AWK7883)
(KUXCN:AWK7884)
(SL)
(SR)
(FR)
Terminal Layout
FL FR C
SL SR SW
PCB
V+B27
VG+12
R3430
STBY
STBY
1.5
1/8W
R3414
ACN7141
2.7
2 L3402
R3440
(SW)
10uH
18
4 3
1/8W
18 1/8W
R3441
1 2
R3412
ATH7021
ACN7141
1.5 1/8W
1.5 1/8W
R3413
L3401
ACN7141
2.7 10uH
4 3
R3442
18
1/8W (C) 1 2
ATH7021
2
18
R3443
R3411
VG+12
ACN7141
1.5 1/8W
R3429
STBY
V+B27
STBY
SX-SW77
7
8
CN3211
AKE7116
+
SL+
1
-
SL-
2
13
+
SR+
3
-
SR-
4
+
SW+
5
-
SW-
6
+
C+
7
-
C-
8
+
FR+
9
-
FR-
10
14
+
FL+
11
-
FL-
12
CHASSIS
GNDD
(SW)
(C)
A 5/5
8
A
B
C
D
E
F
23