Read Sony XM-GTX1321 Service Manual online
XM-GTX1321
XM-GTX1321
10
10
4-2. SCHEMATIC DIAGRAM
• See page 8 for waveforms. • See page 8 for IC Block Diagram.
Note: When replacing the Q161, Q162, Q164, Q165, Q261, Q262,
Q264 and Q265 on the MAIN board, refer to “NOTE FOR
REPLACEMENT OF THE TRANSISTORS” (page 2).
REPLACEMENT OF THE TRANSISTORS” (page 2).
IC B/D
1
1
2
40
40
40
40
11.4
11.4
0
0
-0.5
1.1
0.5
-1.1
39.6
0
0
0
0
0
0.5
0
0
14.7
0.7
0
0
0.5
39.6
0
-1.1
-0.5
0
0
11.4
11.4
40
1.1
0.5
40
40
40
0.5
0.5
1.1
39.6
39.6
0
0
0
0
0
0
0
0
0.7
14.6
4
0
0
7
0
4
0
14.5
14.9
-15.5
14.5
0.7
14.7
0.9
0
0
0
0
0
0
14.7
14.7
-15.9
-15.9
0
14.7
-0.7
0.7
-39
-0.5
-39
-39.5
-39
0
0
0
0
0
0
-40
-0.5
-1.1
-40
-40
-0.5
0.5
-1.1
0.5
-0.5
-1.1
1.1
-15.7
-15.7
0
-39
-39
39.6
-0.5
0
0
-0.5
-0.5
0
0
-40
0.5
1.1
0.5
0
0
-40
-40
-1.1
-1.1
-0.5
-1.1
0.5
0.5
1.1
39.6
-39
-39.5
13.7
13.7
0
0
14.4
0
0
13.7
2.1
13.7
0
15.4
14.7
40
-40
-16.6
-15.9
5
0
0.3
1.5
3.8
14.4
0
5
4.9
14.4
14.4
4.9
5
5
14.4
0
14.4
13.6
0.7
0
0.7
13.7
14.4
14.4
14.4
14.4
14.4
14.4
5.3
5.3
5.3
0.5
5.3
5.3
5.3
0.5
1k
R903
S
FKV550N
Q903
S
FKV550N
Q906
1k
R904
1k
R906
2.2
R910
470
R919
470
R918
2.2
R909
S
FKV550N
Q904
2.2
R907
1k
R901
2.2
R908
22
R902
S
FKV550N
Q905
22
R905
10
R911
16V
2200
C903
16V
2200
C902
2.2
R515
2.2
R514
T901
5
3
1
2
4
8
7
6
FCH10A15
D507
FRH10A15
D508
1000p
C510
50V
560
C512
50V
560
C511
2.2
R520
2SD2012
Q504
2SB1375
Q505
2.2
R523
6.8k
R522
6.8k
R521
6.8k
R524
6.8k
R525
6.8k
R526
6.8k
R527
6.8k
R528
6.8k
R529
1k
R531
1000p
C519
2.2
R181
2.2
R281
47k
R180
47k
R280
300
R276
2SA1908
Q265
470
R275
2SC5100
Q264
10k
R277
2.2
R272
2SC3421-Y
Q259
2SA1358-Y
Q260
2.2
R267
220
R266
300
R271
470
R270
2SA1908
Q262
0.1
R274
0.1
R269
2SC5100
Q261
2.2
R268
2.2
R273
470
R264
1.5k
R263
33p
C252
22k
R261
22k
R262
100
R259
100
R260
10k
R252
2SC4207(T5RSONY,F)
Q251
47p
C253
47k
R253
2SA1618-YGRTE85R
Q252
47k
R254
2SA1908
Q165
10k
R152
22k
R161
470
R164
2SC4207(T5RSONY,F)
Q151
2SC3421-Y
Q159
22k
R162
300
R171
2SA1908
Q162
2SC5100
Q161
2.2
R172
470
R170
2.2
R167
300
R176
47k
R154
2SC5100
Q164
47k
R153
220
R166
47p
C153
100
R160
10k
R177
0.1
R174
2SA1618-YGRTE85R
Q152
2SA1358-Y
Q160
470
R175
0.1
R169
33p
C152
2.2
R168
1.5k
R163
100
R159
2.2
R173
+
-
NJM4565M(TE2)
IC302
3
2
1
47p
C120
10k
R116
330
R117
100
R127
22k
R114
4.7k
R109
+
-
NJM4565M(TE2)
IC301
3
2
1
15k
R108
47p
C104
47p
C105
15k
R107
47p
C103
47p
C205
10k
R216
47p
C203
15k
R207
15k
R208
47p
C204
4.7k
R209
47p
C220
22k
R214
330
R217
100
R227
10k
R122
10k
R222
NJM4565M(TE2)
IC302
8
POWER
4
GND
4.7k
R307
NJM4565M(TE2)
IC301
8
POWER
4
GND
0.47
C306
10k
R305
10k
R306
0.47
C307
22k
R308
68k
R206
68k
R204
2.2k
R303
2.2k
R304
1k
R201
1k
R202
1k
R101
1k
R102
68k
R106
68k
R104
+
-
NJM4565M(TE2)
IC301
5
6
7
+
-
NJM4565M(TE2)
IC302
5
6
7
2.2k
R302
1k
R301
1
2
3
4
4P
CN901
100p
C101
100p
C102
100p
C201
100p
C202
10k
VR301
TP23
TP7
TP8
TP9
TP10
TP11
DZ2J160M0L
D511
DZ2J150M0L
D510
ISA1235AC1-T112-1EF
Q158
ISA1235AC1-T112-1EF
Q258
2SC3052F-T1-LF
Q157
2SC3052F-T1-LF
Q257
2SC3052EF-T1-LEF
Q506
2SC3052EF-T1-LEF
Q507
DA2J10100L
D153
DA2J10100L
D154
DA2J10100L
D253
DA2J10100L
D254
MC2836-T112-1
D302
MC2838-T112-1
D301
MC2838-T112-1
D505
MC2838-T112-1
D506
D151
MC2837
MC2837
D251
MC2837
D503
MC2837
D504
2SC2713G-TE85L
Q163
2SC2713G-TE85L
Q166
2SC2713G-TE85L
Q263
2SC2713G-TE85L
Q266
2SA970-BL(T2SONY,F
Q155
2SA970-BL(T2SONY,F
Q255
2SC2240-BL(T2SONY,F)
Q156
2SC2240-BL(T2SONY,F)
Q256
10k
R926
ISA1235AC1TP-1EF
Q911
22k
R915
15uH
L901
3
2
1
4
(GRN)
(RED)
SML1216WTP4
LED901
0.01
C908
2.2k
R923
DZ2J160M0L
D902
47k
R920
2.2k
R936
10k
R925
220
R924
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TL594INSR
IC901
10k
R935
0.01
C905
2.2k
R928
1
C920
1k
R930
1000p
C906
2SC3052EF-T1-LEF
Q913
RT1N141C-TP-1
Q909
4.7k
R921
KTA1281Y-AT
Q912
RT1N141C-TP-1
Q910
RT1N141C-TP-1
Q914
TP16
1
C910
4.7k
R922
100k
R916
C909
1000p
1000p
C914
RT1P441C-TP-1
Q908
TP4
TP5
TP6
RT1N441C-TP-1
Q501
MC2838-T112-1
D501
DA2J10100L
D502
100k
R510
DZ2J068M0L
D513
10k
R518
RT1P141C-TP-1
Q503
82k
R517
DA2J10100L
D515
100k
R516
MC2836-T112-1
D512
RT1P441C-TP-1
Q510
1M
R513
DA2J10100L
D514
10k
R126
DA2J10100L
D901
TH501
TH502
TH503
CN902
2SC3052F-T1-LF
Q511
2SC3326N-TE85L-B
Q512
100k
R509
2SC3052F-T1-LF
Q502
4.7k
R530
470
R128
2.2k
R130
2.2k
R230
2.2k
R151
680
R129
390
R229
330
R228
1.5k
R251
DZ2J056M0L
D516
0
JR4
2SC3052F-T1-LF
Q508
0.1
C913
0.1
C508
0.1
C180
0.1
C509
0.1
C281
0.1
C280
0.1
C513
0.1
C181
0.1
C505
0.1
C514
16V
220
C520
16V
100
C907
16V
100
C912
16V
100
C251
16V
100
C151
16V
220
C302
50V
22
C206
50V
22
C123
50V
22
C504
50V
22
C106
50V
22
C309
50V
220
C507
50V
220
C506
SW301
TP3
TP1
TP2
TP13
TP12
TP14
TP15
TP17
TP18
TP20
TP19
TP21
TP22
TP24
TP25
TP26
2SC3052EF-T1-LEF
Q301
0.1
C310
0.1
C303
0.1
C154
0.1
C155
0.1
C254
0.1
C255
0.1
C304
0.1
C305
0.1
C308
0.1
C502
0.1
C515
0.1
C516
0.1
C517
0.1
C518
0.1
C901
0.1
C911
0.1
C917
10k
R121
10k
R221
270
R929
1.5k
R155
1.5k
R156
1.5k
R157
1.5k
R158
1.5k
R255
1.5k
R256
1.5k
R257
1.5k
R258
1.5k
R927
2.2k
R503
1.8k
R507
3.3k
R502
3.3k
R508
6.8k
R165
6.8k
R265
6.8k
R917
10k
R932
10k
R931
10k
R934
10k
R933
10k
R115
10k
R215
22k
R103
22k
R105
22k
R203
22k
R205
150k
R532
2SC3326N-TE85L-B
Q202
2SC3326N-TE85L-B
Q901
2SC3326N-TE85L-B
Q103
2SC3326N-TE85L-B
Q902
2SC3326N-TE85L-B
Q203
2SC3326N-TE85L-B
Q102
1.8k
R501
5.6k
R505
5.6k
R506
0.01
C919
IC901
DC/DC CONVERTER
DC/DC CONVERTER
TRANSFORMER
IC301
(3/3)
(2/3)
(3/3)
IC302
PRE AMP
(1/3)
IC301
GAIN CONTROL AMP
(1/3)
IC302
MAIN BOARD
(BTL)
L
R
INPUT
SENSING POWER ON
HIGH LEVEL INPUT
L+
R+
L–
R–
(CHASSIS)
(2/3)
PRE AMP
-1
-2
-1
-2
LOW-PASS FILTER
LEVEL
SWITCH
SWITCH
MUTING
MUTING
-1 -2
-2 -1
DRIVE AMP
DRIVE AMP
DIFFERENTIAL AMP
DIFFERENTIAL AMP
DIFFERENTIAL AMP
DIFFERENTIAL AMP
DRIVE AMP
DRIVE AMP
DRIVE AMP
DRIVE AMP
-1
-2
-1
-2
DRIVE AMP
BIAS
BIAS
BIAS
BIAS
POWER AMP
POWER AMP
5W
5W
POWER AMP
POWER AMP
OVER LOAD DETECT
OVER LOAD
DETECT
OVER LOAD DETECT
OVER LOAD DETECT
POWER AMP
POWER AMP
POWER AMP
POWER AMP
DRIVE AMP
5W
5W
GAIN CONTROL AMP
(80Hz)
LPF
ON
OFF
DRIVER
DRIVER
DRIVER
SWITCHING
DRIVER
SWITCHING
DRIVER
SWITCHING
DRIVER
SWITCHING
MUTING SWITCH
Q510, 511
THERMAL DETECT
DC OFF DETECT
+15V REGULATOR
-15V REGULATOR
PROTECT SWITCH
Q502, 503
OVER VOLTAGE DETECT
DC OFF DETECT
Q912, 913
B+ SWITCH
Q506, 507
ZERO LEVEL PROTECT
Q908, 909
PROTECT DETECT
LED DRIVER
PROTECTOR
POWER/
(RED): PROTECTOR ON
(GRN): POWER ON
C1
GND
RT
CT
DTC
FEEDBACK
1IN-
1IN+
2IN-
C2
E1
REF
VCC
2IN+
E2
OUTPUT
CTRL
+
–
+
–
L
R
BTL
OUT
SPEAKER
F901
25A
F902
25A
25A
25A
REM
+12V
GND
CN903
16
N
8
I
14
2
15
12
A
D
5
K
B
M
7
C
L
17
21
6
11
3
H
F
13
20
G
9
E
10
1
19
J
18
4
22
THERMAL DETECT
32V
32V
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