Main Assy (1/5) - Pioneer SX-SW77 Service Manual

1

3.2 MAIN ASSY (1/5)

A
IC5502
RESET
PST3245
VU+5
R5505
10k
B
R5506
STBY
R5508
VE+5
2.2k
C
VU+5
VE+5
C
C5524
10/50
B
Q5525
DTC143EUA
E
D
STBY
VFLDC+ GNDD
VE+5
11
E
8 9
VFLDC-
7
5
1 2 3
CHASSIS
1.GNDD
2.GNDD
3.VFDP
4.KEY2
5.FLDATA
6.REMOCON
7.XFLCS
8.FLCK
9.VE+5
C5608
F
10.KEY1
STBY
11.F+
12.F-
VFDP
A 1/5
14
1
2
STBY
R5501
R5502 220
6 R5503 220
7 R5504 220
C5509
VU+5
C5508
0.01
X5501
ASS7034
10MHz
STBY R5511
R5517
10k
R5519 220
19
C5519 0.01
21
R5521 220
C5521 0.01
22 R5522
C5522 STBY
23
STBY
C5523 100p
24
CH 220
R5523
25
C5526 100p
CH
27
RAB4C221J
28 R5525 220
DSP
UCOM
VS+5
XFLCS 50
51
FLCLK
CN5601
XPROTECT
AKP7131
12
69
KEY1
10
RMC
6
19
KEY2
4
49
FLDAT
E2
C2
B
GNDD
2
3
R5584
RAB4C221J
NC
NC
NC
PDNDET
P_ON
RDSCLK
REMOCON
XRESET
XT1
XT2
VSS1
CF1
CF2
IC5501
VDD1
PDC128A
SIMUKE
LC875BJ0A
MODEL
µ-COM
NC
NC
KEY2
NC
PCONFIG
XPROTECT
DSPDI
DSPDO
DSPCK
NC
DASDA
DASCK
NC
NC
VS+3R3
PROTECT
Q1413
STBY
DTC124EUA
D1412
1SS355
Q1410 (2/2)
UMD2N
DSP MUTE
C
Q5502
B
Q5501
DTC124EUA
(2/2)
UMD2N
E
B2
UMD2N
D5501
DAP202K
2
3
1
C
Q5501
(1/2)
UMD2N
E
SX-SW77
3
4
VE+5
KN5501
VNF1109
CHASSIS GND
1
R5580
STBY
C5579
R5579
220
(FREQCONT1)
0.01
R5577
XOTW
R5578
(DC DET)
C5577
SHUTDWN
XADPDN
0.01 R5573
INPUTSELA
DIGSEL
(PSVC)
R5570
XDAMUTE
RAB4C221J
XDAPDN
R5520 10k
XDARST
C5518
KEY1
R5518 220
EEP_DI
0.01
DIRERR
TXIDATA
RDSDATA
R5562 RAB4C221J
RDSPOW
220
NC
TXODATA
R5561
TXCLK
EEP_SK
R5557 RAB4C221J
220
C5556
VSS2
0.1/16
VDD2
NC
NC
TXCE
FLCLK
R5549
220
GNDD
VS+5
UTEST
SHORT for
STEST
TEST POINT
Q1402
2SA1576A(QR)
1
D1402
3
2
DAN202K
E2
Q1410 (1/2)
Q1401
C UMD2N
B2
2SA1576A(QR)
B
C2
E
VFDP
Q5503 (2/2)
E2
C2
C
B2
E
B
B
C
E
Q5503 Q5504
(1/2) UMD2N DTA124EUA
4
VS+3R3
79
STBY
STBY
77
76
RAB4C221J
75
220
74
72
220
71
70
69
R5567
220
66
65
64
62
1k 61
87
52
86
51
RAB4C221J
50 96
49
VS+12
ADMD 33
XDSPMUTE 35
DSPMUTE
XDAMUTE 72