Read Sony XM-N502 Service Manual online
XM-N502
XM-N502
9
9
4-2. SCHEMATIC DIAGRAM - MAIN Board (2/2) -
Note: When replacing the Q110, Q111, Q210 and Q211 on the MAIN board, refer
to “NOTE FOR REPLACEMENT OF THE TRANSISTORS” on page 2.
• See page 7 for Waveforms. • See page 7 for IC Block Diagram.
(1/2)
MAIN
BOARD
1
IC B/D
2
2
1
0.1
0.8
0.8
0.1
14.3
14.3
14.3
14.3
13.7
13.7
0.5
2.5
0
0.3
1.6
3.8
14.3
0
2.5
5
5
14.3
5.7
5.7
14.3
0.1
14.3
14.2
0.1
14.2
0
2
5.6
5.6
5.4
5.4
5.6
5.6
14.3
14.3
-14.9
-30.3
-14.3
-14.3
-30.3
-14.9
-14.3
-30.3
-14.9
13.8
30
13.2
13.8
13.2
30
13.8
13.2
30
14.2
0.1
0.1
14.2
0.2
-0.3
-0.9
-0.3
-30.3
-30.3
0.2
0.2
0.7
-0.9
-0.9
-29.6
-0.9
0.6
1.2
30
30
13.9
0.2
0.7
1.3
0.6
-0.3
-29.1
30
29.5
1.3
0.1
29.4
29.5
0.1
0.1
0.7
0.1
-29.1
-29.1
-0.4
0.7
-29.1
0.2
-29.1
0.2
-0.3
29.5
29.4
30
1.3
29.5
-0.8
-29.6
-29.1
-0.3
-0.8
0.6
0.6
-0.8
1.2
0.7
0.2
1.3
0.7
30
30
-30.3
-0.3
-30.3
-0.8
0.2
-0.3
0.2
0.2
13.9
100
R223
470
R907
T901
4
2
1
3
5
6
S
FKV550N
Q911
RT1N141C-TP-1
Q901
0.01
C308
UDZSUSTE-1715B
D306
1k
R921
1.5k
R137
1k
R904
0.1
R232
3.3k
R321
2.2
R130
22k
R913
1k
R918
DA2J10100L
D307
TP14
100
R222
50V
560
C305
16V
47
C211
1
C911
0.047
C215
100
R123
1.5k
R237
TP19
1k
R318
2SC3052EF-T1-LEF
Q308
10k
R117
TP17
RT1N141C-TP-1
Q906
FRH10A15
D304
2.2
R230
10k
R133
2SC5100-P
Q210
DA2J10100L
D905
2.2
R927
1000p
C908
0.01
C307
2SC5100-P
Q110
RTAN140C-T112-1
Q908
RT1N141C-TP-1
Q904
2SA1908-P
Q111
16V
47
C111
100
R122
1k
R922
3.3k
R320
220
R229
10k
R233
RTAN140C-T112-1
Q909
16V
2200
C915
2.2k
R906
1.5k
R221
2.2
R234
22
R926
TP15
33k
R219
270
R905
UDZSUSTE-1713B
D305
TP10
KTA1023-Y-AT/P
Q109
0.1
C914
DA2J10100L
D202
0.01
C318
1.5k
R908
47p
C212
TP9
2.2
R928
50V
560
C306
10k
R901
0.1
C313
33k
R119
4.7k
R915
100k
R940
10k
R217
TP18
(GRN)
(RED)
SML1216WTP4
D918
2SC3052EF-T1-LEF
Q112
1.5k
R220
2.2
R131
DZ2J160M0L
D904
1000p
C910
10k
R902
TP7
0.01
C909
22
R925
2.2
R134
0.1
R132
KTC1027-Y-AT/P
Q108
DA2J10100L
D102
1k
R924
33k
R118
1.5k
R138
0.1
C906
KTC1027-Y-AT/P
Q208
22p
C113
ISA1235AC1-T112-1EF
Q309
2SA1908-P
Q211
10k
R939
0.01
C311
1000p
C903
FCH10A15
D303
KTA1281Y-AT
Q902
KTC3198GR-A
Q317
220
R129
TP11
1.5k
R121
1.5k
R238
2SC3052EF-T1-LEF
Q903
10k
R903
1k
R923
16V
100
C905
0.1
C312
0.1
C902
47p
C112
22p
C213
TP21
2.2
R231
33k
R218
2.2k
R932
KTA1023-Y-AT/P
Q209
2SC3052EF-T1-LEF
Q307
16V
100
C907
2.2k
R216
2SC3052EF-T1-LEF
Q212
TP16
DA2J10100L
D101
DA2J10100L
D201
RT1P441C-TP-1
Q905
0.047
C115
4.7k
R916
10k
R933
1.5k
R120
6.8k
R914
TP8
KTA1266GR-AT
Q314
22k
R128
0.1
C114
2SC3052F-T1-LF
Q106
680
R126
ISA1235AC1-T112-1EF
Q107
220
R127
680
R226
2SC3052F-T1-LF
Q206
22k
R228
ISA1235AC1-T112-1EF
Q207
220
R227
0.1
C224
47k
R931
TP12
TP20
TP22
S
FKV550N
Q910
10k
R941
10k
R942
KTC3198GR-A
Q315
KTC3198GR-A
Q313
KTA1266GR-AT
Q316
KTA1266GR-AT
Q318
16V
100
C919
16V
100
C920
0.1
C136
2.2k
R136
R912
10k
C912
0.1
2SC4207(T5RSONY,F)
Q203
2SC4207(T5RSONY,F)
Q103
2SA1618-YGRTE85R
Q102
2SA1618-YGRTE85R
Q202
10
R327
10
R325
10
R323
10
R322
10
R324
10
R326
1.5k
R116
2.2k
R141
100k
R135
100k
R235
100k
R319
C904
1
C913
1
1k
R919
1k
R920
L901
80uH
15k
R239
15k
R139
10k
R140
10k
R240
47k
R943
DA2J10100L
D906
ISC3244AS1-T112-E
Q105
ISC3244AS1-T112-E
Q205
ISA1284AS1-T112-E
Q104
ISA1284AS1-T112-E
Q204
TL594CD-R2
IC901
1 1IN+
2 1IN–
3 FEEDBACK
4 DTC
5 CT
6 RT
7 GND
8 C1
9
E1
10
E2
11
C2
12
VCC
13
OUTPUT
CTRL
14
REF
15
2IN–
16
2IN+
16V
100
C317
47k
R224
47k
R225
47k
R125
47k
R124
0.1
C921
7
4
3
1
5
2
6
IC901
DC/DC CONVERTER
MAIN BOARD (2/2)
OVER VOLTAGE DETECT
(CHASSIS)
CAM006
Q902, 903
B+ SWITCH
DC OFF DETECT
(E, IND)
PROTECT DETECT
Q905, 906
LED DRIVER
(RED): PROTECTOR ON
PROTECTOR
POWER/
(GRN): POWER ON
DC/DC CONVERTER
TRANSFORMER
DRIVER
DRIVER
DRIVER
DRIVER
SWITCHING
SWITCHING
5W
5W
POWER AMP
POWER AMP
POWER AMP
POWER AMP
DRIVE AMP
DRIVE AMP
DRIVE AMP
DRIVE AMP
BIAS
BIAS
BIAS
BIAS
OVER LOAD DETECT
OVER LOAD DETECT
-2
-1
-2
-1
-2
-1
-2
-1
DIFFERENTIAL AMP
DIFFERENTIAL AMP
DIFFERENTIAL AMP
DIFFERENTIAL AMP
DRIVE AMP
DRIVE AMP
DRIVE AMP
DRIVE AMP
-15V REGULATOR
-15V REGULATOR
-15V REGULATOR
+13V REGULATOR
+13V REGULATOR
+13V REGULATOR
Q307, 308
ZERO LEVEL DETECT
R
CN903
BTL
L
OUT
SPEAKER
25A
32V
F901
GND
REM
+12V
(CHASSIS)
CAM001
CAM002
(CHASSIS)
CAM003
(CHASSIS)
CAM004
(CHASSIS)
CAM005
(CHASSIS)
15
6
12
J
17
3
G
K
13
4
F
5
2
7
C
H
I
11
14
16
19
E
9
L
B
8
A
10
D
18
1
+
–
+
–
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