Sony Walkman WM-FX522, Service Manual

Page: 18 / 32

WM-FX522
18 18
6-4. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 21 for IC Block Diagrams.
TP20
R302
R18
C33
D4
C34
C35 R10
CT1
C23
R8
D1
R7
R9
C30
C29 C37
C24
C27
D3 C40
C28 R6
C21
C47
C36
TP1 C18
C39 C38 C19
TP9
C4
C16 R4 C17
C45 C13
TP6 TP7
C6
C2
C7 R1
C11 C12
C46 C14 R2
R3
TP64
TP65
TP55 TP28 TP27 TP26 TP25 TP37 TP14 TP29
TP19
TP17
TP18
TP16
TP15
R205
C208 R209 R204
R203
R201
C201
CB301
C209
C109
R109
R206
R106
R104
C108
R103
C101
R102
C319
R101
R303 C320
R305
C302
R304
R105
TP62
TP63
R107
R202
R207
C303
R306
C315
C103
R108
C305
R307
R308 C311
C310
C317
C318
C309
C316
R208 C203
C306
C312
R212
C321
C322
R312
TP22
TP23
TP21
TP11
TP12
FB2
FB3
FB4
FB5
FB6
FB7
TP3
R309
C102
C202
C307
R17
C324
C301
C1
RV301
C5
C10
JC6
FL1
C9
IC1
TP61
J301
L7
L3
L5
C31
TP5
C3
TP4
C15
TP8
TP2
C20
JC301
C8
JC1
C313 C314
C308
220k
100k
2p
MA2S357
2200p
2200p 100k 0.022
470k
SVC347
10k
470k
470p
10p 5p
0.022
2200p
MA2S357 2p
100p 100k
2200p
220p
1000p
0.022
220p 1000p 0.01
0.1
0.01 2.2k 0.01
0.01 0.022
4.7
4V
4.7
4V
470p 1k
0.01 0.01
0.01 0.022 2.2k
2.2k
1k
0.022 47k 10k
100
220k
47 4V
470P
0.047
0.047
47k
1k
1k
10k
0.022
100
47 4V
22k
0.1
220k
22k 0.0047
22k
0.1
47k
1k
22k
22k
22k
22
6.3V
4.7
220
6.3V
0.47
2.2
470
4V
2.2k
470k 0.1
2.2
6.3V
0.022
0.022
1
2.2
2.2 0.47
4.7 4V
1
1
1
10k
2.2
2.2
0.1
1k
220p
47
4V
1000p
30k/30k
0.047
47
4V
TA2154FN
(FM IF IN)
0.022
(VT)
1000p
0.1
(GND)
2200p
0.47
4.7
4V
2.2
6.3V
0.22
A1
A2
A3
A4
A5
A6
A8
A9
A10
C
1
C
2
C
3
C
4
C
5
C
6
C
7
D
1
D
2
D
3
D
4
D
5
D6
X1
X2
X3
X4
X5
X
3
X
4
X
5
REMOTE
GND
VCC
DATA
COM
LCH
RCH
R
FG
ND
FM
-M
IX
AM
-M
IX
AGC Vcc GND AM
IFin
Q
UAD
DETo
ut
M
PXin
LPF1 R
-OU
T
FM
RFin
TVRFin
REV-L
FWD-L
REV-R
REF
CAMP_SW
AMS_SW A
M
S_M
IX
AM
S_D
ET
GN
D
RF_O
UT
BASE VCC PW
_OU
T_L
P
W
_O
UT_C
P
W
_O
UT_R
PW
_GND
R
F_IN
AMS IN
PRE NF-R
PRE OUT-R
MTL DRV-R
MTL DRV-L
PRE OUT-L
PRE NF-L
REV IN-L
REV IN-R
REF OUT
FWD IN-R
FWD
IN-L
FWD-R
(1/2)
-1
-2
-1
-2
VOL
FM
IFin
B.P.F.
L-CH
R-CH
R-CH
L-CH
REV
FWD
FM RF
AM OSC
1
2
3
L4
AM
FERRITE-ROD
ANTENNA
FM/AM OSC,FM/AM IF AMP,
FM RF AMP,FM/AM MIX AMP,
FM/AM DET,MPX
L-OU
T
LPF2
A
LPF2
B
IFcount
REQ
SW
M
O
DE-1
M
ODE-2
O
SC
out
FM
/TVOS
C
AM
OS
C
R
FVcc
AM
R
Fin
A
M
B/P
FM
RFout
TVRFout
VREF_IN
PRE_GN
D
M
/N
_SW
PRE_SW
F/R_SW
BST_SW
PW
_SW
M
T_SW
A
M
S_O
UT
BEEP
M
T_TC
AGC DET
AGC IN
BST NF
BST OUT
PW IN-C
LPF
EQ-L
PW NF-L
PW IN-L
PW IN-R
PW NF-R
EQ-R
IC301
TA2123AF
AUDIO MASTER AMP
FWD/REV SELECT,
PLAYBACK EQ AMP,
BASS BOOST AMP,
AMS,POWER AMP,
RIPPLE FILTER
Q304
XN1116-TX
SWITCH
AVLS CONTROL
Q301
2SB815B7-TB
RIPPLE FILTER
FWD(L)
FWD(R)
REV(L)
REV(R)
REF
GND
HP901
(PLAYBACK)
Q2
2SB815B7-TB
B+ SWITCH
JC2
CF2
X1 CF1
C43 C44
0.0022 0.0022
R112 R311
2.2k 100k
2.2k 100k
CT1, L5
(Page 19)