Sony XM-7547 (serv.man3) Service Manual ▷ View online
5
PRINTED WIRING BOARD
– AMPLIFIER SECTION –
!
: indicates corrected portion
page (9) : Refer to SERVICE MANUAL SUPPLEMENT-1.
Page
INCORRECT
CORRECT
12
(9)
C864
JW609
JW610
C862
D859
D856
D860
D858
D861
C866
JW691
JW692
E
E
E
E
JW693
L851
L854
Q413
Q414
Q415
D406
Q416
R436
R449
R868
R448
R447
R446
R434
R437
R450
D405
C868
R445
R451
R440
R438
R443
R435
TP402
CP406
CP405
TP401
CP403
CP404
D404 D403
#
$
JW685
JW899
JW898
JW897
JW684
JW683
JW637
JW636
JW644
JW632
JW686
JW688
JW689
E
E
E
E
D305
R340
R338
JW687
R240
R238
C877
Q313
Q314
Q316
Q315
Q215
Q216
C892
C893
R236
R237
R246
R247
R248
R249
R346
R347
R348
R349
R245
R250
R336
R334
R337
R350
R343
R335
R351
R345
Q304
TP201
TP202
TP301
CP305
CP306
TP302
CP204
CP205
CP206
CP203
D306
E
E
D304 D303
D204 D203
E
JW685
JW899
JW898
JW897
JW684
JW683
JW637
JW636
JW644
JW686
JW688
JW689
E
E
E
E
D305
R340
R338
JW687
R240
R238
C877
Q313
Q314
Q316
Q315
Q215
Q216
C892
C893
R236
R237
R246
R247
R248
R249
R346
R347
R348
R349
R245
R250
R336
R334
R337
R350
R343
R335
R351
R345
Q304
TP201
TP202
TP301
CP305
CP306
TP302
CP204
CP205
CP206
CP203
D306
E
E
D304 D303
D204 D203
E
#
#
#
#
J6599
JW672
JW673
JW674
JW664
JW671
JW663
JW665
R155
C1
12
R125
R124
R154
C115
R157
R156
C1
16
C1
17
R140
R138
Q113
Q114
Q115
Q116
R149
R148
R147
R146
R1
17
R136
R137
R134
R180
R121
R120
C882
C883
R151
R145
R150
R143
R135
Q107
Q105
Q104
Q106
TP102
CP104 CP103
CP105
CP108
D105
E
E
E
E
D106
D104 D103
R1
18
R1
19
J6599
JW672
JW673
JW674
JW664
JW671
JW663
JW665
R155
C1
12
R125
R124
R154
C115
R157
R156
C1
16
C1
17
R140
R138
Q113
Q114
Q115
Q116
R149
R148
R147
R146
R1
17
R136
R137
R134
R180
R121
R120
C882
C883
R151
R145
R150
R143
R135
Q107
Q105
Q104
Q106
TP102
CP104 CP103
CP105
CP108
D105
E
E
E
E
D106
D104 D103
R1
18
R1
19
# #
C864
JW609
JW610
C862
D859
D856
D860
D858
D861
C866
JW691
JW692
E
E
E
E
JW693
L851
L854
Q413
Q414
Q415
D406
Q416
R436
R449
R868
R448
R447
R446
R434
R437
R450
D405
C868
R445
R451
R440
R438
R443
R435
CP406
CP405
TP401
CP403
CP404
D404 D403
6
R248
1-208-462-61 RES-CHIP
10K
2%
1/10W
R348
1-208-462-61 RES-CHIP
10K
2%
1/10W
ELECTRICAL PARTS LIST
!
: indicates changed portion
Page
19
Former Type
New Type
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
C117
1-126-008-51 ELECT
470uF
20%
16V
C217
1-126-008-51 ELECT
470uF
20%
16V
C317
1-126-008-51 ELECT
470uF
20%
16V
C417
1-126-008-51 ELECT
470uF
20%
16V
$
$
$
$
$
$
$
R160
1-208-462-61 RES-CHIP
10K
2%
1/10W
R260
1-208-518-61 RES-CHIP
22K
2%
1/10W
R360
1-208-462-61 RES-CHIP
10K
2%
1/10W
$
$
$
R460
1-208-462-61 RES-CHIP
10K
2%
1/10W
$
22
23
Apply it SUFFIX -11, -12 OF AMPLIFIER BOARD
$
$
7
2. CHANGE OF BOARDS
The Amplifier Board and the Power Board were changed.
All schematic diagrams of the new type, printed wiring boards are published here.
All schematic diagrams of the new type, printed wiring boards are published here.
Distinguish the new type, the old type with the printed wiring board number.
[AMPLIFIER BOARD]
[POWER BOARD]
AMPLIFIER BOARD Parts Number
Former type : 1-675-240-11, -12
New type
Former type : 1-675-240-11, -12
New type
: 1-675-240-13, -14
POWER BOARD Parts Number
Former type : 1-675-241-11
New type
Former type : 1-675-241-11
New type
: 1-675-241-12
8
3
Approximate adjustment values
• Adjust as follows so that the following voltages become
• Adjust as follows so that the following voltages become
0.4 to 0.5 mV .
(Board parts number : 1-675-240-11, 1-675-240-12)
(Board parts number : 1-675-240-11, 1-675-240-12)
#
• Adjust as follows so that the following voltages become
#
0.9 to 1.0 mV .
(Board parts number : 1-675-240-13 and higher)
But, the voltage when product doesn’t warm up is
0.6 to 0.7 mV .
(Board parts number : 1-675-240-13 and higher)
But, the voltage when product doesn’t warm up is
0.6 to 0.7 mV .
A channel :
Voltage between TP101 and TP102: Use VR101 of the am-
plifier board
B channel :
Voltage between TP201 and TP202: Use VR201 of the am-
plifier board
C channel :
Voltage between TP301 and TP302: Use VR301 of the am-
plifier board
D channel :
Voltage between TP401 and TP402: Use VR401 of the am-
plifier board
Voltage between TP101 and TP102: Use VR101 of the am-
plifier board
B channel :
Voltage between TP201 and TP202: Use VR201 of the am-
plifier board
C channel :
Voltage between TP301 and TP302: Use VR301 of the am-
plifier board
D channel :
Voltage between TP401 and TP402: Use VR401 of the am-
plifier board
Note:
^
Precautions regarding the replacement of parts for MOSFET:
Parts for the amplifier board suffix 11, 12 (serial numbers
0010001 to 012100) are each paired parts. Consequently, when
replacing parts, if they are not replaced in pairs, it is impossible
to guarantee the above adjustment values.
Parts for the amplifier board suffix 11, 12 (serial numbers
0010001 to 012100) are each paired parts. Consequently, when
replacing parts, if they are not replaced in pairs, it is impossible
to guarantee the above adjustment values.
IDLING CURRENT ADJUSTMENT
!
: indicates changed portion
Page
Former Type
New Type
7
3
Approximate adjustment values
• Adjust as follows so that the following voltages become
• Adjust as follows so that the following voltages become
0.4 to 0.5 mV .
(Board parts number : 1-675-240-11, 1-675-240-12)
(Board parts number : 1-675-240-11, 1-675-240-12)
A channel :
Voltage between TP101 and TP102: Use VR101 of the am-
plifier board
B channel :
Voltage between TP201 and TP202: Use VR201 of the am-
plifier board
C channel :
Voltage between TP301 and TP302: Use VR301 of the am-
plifier board
D channel :
Voltage between TP401 and TP402: Use VR401 of the am-
plifier board
Voltage between TP101 and TP102: Use VR101 of the am-
plifier board
B channel :
Voltage between TP201 and TP202: Use VR201 of the am-
plifier board
C channel :
Voltage between TP301 and TP302: Use VR301 of the am-
plifier board
D channel :
Voltage between TP401 and TP402: Use VR401 of the am-
plifier board
Part Ref. No.
Q110, 111
Q210, 211
Q311, 312
Q411, 412
Q210, 211
Q311, 312
Q411, 412
Replacement Part
X-3378-771-1
MOSFET Pair ASSY
MOSFET Pair ASSY
Remarks
They are supplied in pairs
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