Sony XM-2252HX Service Manual ▷ View online
XM-2252HX
– 9 –
SECTION 5
DIAGRAMS
5-1. IC BLOCK DIAGRAMS
IC101- 103, 201- 203 NJM4580E
IC901
µ
PC494GS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : POWER ON
no mark : POWER ON
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: AUDIO
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
•
¢
: internal component.
1
2
3
4
5
6
7
8
A OUT
A –IN
A +IN
V–
V+
B OUT
B –IN
B +IN
A
B
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
SECTION 4
DISASSEMBLY
Note :
Follow the disassembly procedure in the numerical order given.
4-1. BOTTOM PLATE, PANEL (FRONT), PANEL (REAR) REMOVAL
4-2. AMP/POWER BOARD REMOVAL
Note :
Amplifier board and Power board are not
separated because the board is long and heavy.
Take care not to damage the board when removing.
separated because the board is long and heavy.
Take care not to damage the board when removing.
Heat sink block
7
Auto fuse
(F902)
6
Connector
(CNP802)
8
Auto fuse
(F901)
9
Screw
(BTP 3x8)
!£
Screw
(BTP 3x8)
0
Three screws
(BTP 3x8)
!¡
Three screws
(BTP 3x8)
!¢
Three screws
(BTP 3x8)
!∞
Two screws
(BTP 3x8)
!§
Screw
(BTP 3x8)
!™
Panel (Front)
!¶
Panel (Rear)
2
Three screws
(BTP 3x5)
3
Two screws
(BTP 3x5)
4
Two screws
(BTP 3x5)
1
Three screws
(BTP 3x5)
5
Bottom plate
7
Heat sink
6
Light interseption rubber
3
Four screws
(P 4x10)
4
Four screws
(P 4x10)
2
Four screws
(P 4x10)
1
Four screws
(P 4x10)
5
Amp/power board
Amplifier board
Power board
– 10 –
• WAVEFORMS
1
2
3
4
14Vp-p
27
µ
sec
29Vp-p
27
µ
sec
29Vp-p
27
µ
sec
60Vp-p
27
µ
sec
XM-2252HX
– 11 –
– 12 –
• Semiconductor
Location
D101
A-8
D102
A-5
D103
C-6
D104
C-6
D105
A-9
D201
G-7
D202
F-6
D203
E-6
D204
E-6
D205
G-9
D801
C-8
D802
C-8
D803
D-8
D804
E-9
D930
C-7
D931
C-7
D932
E-7
D933
E-7
IC101
B-2
IC102
D-3
IC103
C-2
IC201
B-3
IC202
E-4
IC203
D-2
IC807
E-8
IC902
C-8
Q101
C-2
Q102
D-6
Q103
C-6
Q104
C-6
Q105
C-6
Q106
C-6
Q107
C-6
Q108
C-6
Q109
A-6
Q110
A-7
Q111
A-8
Q112
A-5
Q113
A-6
Q114
C-6
Q115
C-6
Q116
C-7
Q117
C-6
Q118
B-8
Q119
A-8
Q120
B-8
Q121
B-8
Q201
D-3
Q202
D-6
Q203
E-6
Q204
E-6
Q205
E-6
Q206
E-6
Q207
E-6
Q208
E-6
Q209
G-6
Q210
G-7
Q211
G-8
Q212
G-6
Q213
G-5
Q214
E-6
Q215
E-6
Q216
E-7
Q217
E-6
Q218
F-8
Q219
G-8
Q220
F-8
Q221
F-8
Q801
C-8
Q802
C-8
Q803
C-7
Q804
B-7
Q805
C-8
Q806
D-8
Q807
D-9
Q808
D-8
Q809
D-8
Q810
E-8
Q811
E-8
Q812
E-7
Q813
E-7
Ref. No.
Location
5-2. PRINTED WIRING BOARD – AMPLIFIER SECTION –
1
F
E
D
C
B
A
2
3
4
5
6
7
8
9
09
G
C102
C101
VR803
VR802
JW71
C112
C113
JW74
JW73
JW72
JW58
JW60
JW57
JW56
C207
JW170
JW169
JW168
JW22
CN802
JW8
C209
C208
C210
C108
JW49
JW50
JW7
JW16
JW15
C124
JW14
JW13
JW163
JW12
JW20
JW160
JW21
JW28
JW158
JW27
JW26
Lch AMP
PRE AMP
+
FILTER
MUTE
PROTECT
PROTECT
+
LED DRIVE
Rch AMP
Q209
JW32
Q213
JW31
Q102
Q202
JW128
JW127
C121
JW126
CNJ803
IC807
JW171
JW40
JW45
JW41
JW43
JW44
JW42
Q210
TP201
Q109
Q112
Q113
Q110
JW118
JW120
JW119
JW90
JW91
JW105
JW104
JW103
JW102
JW101
JW100
JW65
JW64
JW99
JW98
JW97
JW62
JW61
JW93
JW94
JW95
JW96
R232
JW30
JW29
JW25
C224
JW4
JW3
JW1
JW10
JW17
JW18
JW19
JW9
JW166
JW164
JW159
JW165
JW2
JW162
JW161
R256
JW6
JW5
JW11
VR201
VR101
JW33
JW34
JW38
JW39
JW37
JW36
JW35
Q212
LD803
THERMAL
TP203
TP204
Q211
TH801
TP103
TP104
Q111
JW138
JW137
JW150
TP101
JW139
JW131
JW130
JW140
CNP802-2
Q207
Q208
R945
R946
JW122
Q204
Q203
Q205
Q206
JW123
C221
R231
R156
JW129
JW135
JW125
JW134
JW136
R943
R944
C803
CNP804-2
Q105
Q106
C801
IC902
JW170
JW146
JW144
JW145
JW141
JW142
JW143
Q104
Q103
R132
JW112
JW115
JW114
JW111
JW76
JW75
JW110
JW113
C129
R131
C120
JW107
JW106
JW108
JW109
JW124
C220
C206
C229
JW121
C809
CNJ801
JW80
JW84
JW83
JW82
JW81
C226
R159
JW85
JW78
JW79
JW86
JW87
JW88
JW89
C964
C961
JW77
JW92
C201
C126
C202
JW153
JW152
JW152
CNJ804
JW69
JW70
S803
C109
VR801
JW51
JW52
C110
C107
C212
C213
C106
JW55
JW53
JW54
JW63
JW59
C962
C963
JW24
JW23
JW167
R259
JW116
JW117
JW46
JW48
JW67
JW66
C806
C114
C214
JW68
Q107
Q108
BLK
BLU
BLU
BLU
BLU
BLK
BLU
BLU
BLU
BLU
1-674-540-
11
R150
R149
R167
R166
S
G
S
G
S
G
TO POWER BOARD
POWER BOARD
CNP804-1
TO POWER BOARD
A
POWER BOARD
CNP802-1
C
POWER BOARD
CNP802
B
LD801
OFFSET
LD802
OVER CURRENT
POWER/PROTECTION
L
R
L
R
CNJ804
HIGH LEVEL
INPUT
L
L+R
MONO
R
(MONO)
L
R
INPUT
SPEAKER OUT
OUTPUT
(THROUGH)
CN802
VR803
LEVEL
LEVEL
(MIN – MAX)
VR802
LOW BOOST
(40Hz)
(0dB – +10dB)
VR801
FILTER
(50Hz – 200Hz)
S803
FILTER
LPF
OFF
HPF
VR101
IDLING
TO POWER BOARD
TO POWER BOARD
R268
R267
R250
R249
VR201
IDLING
C117
C116
C
805
C
804
R
153
R
253
R811
C217
C216
R160
R157
R104
C104
IC101
IC201
C204
R204
R207
C205 R206
R258
R106
R110
R102
C125
C119
R208
R201
D102
R135
R136
R162
R164
R137
R163
C957
Q119
R148
C958
R138
R125
R225
C230
R229 R230
R238
R830
R831
C227
D203
D203
C228
D204
D204
R129
C802
D103
D104
C127
C128
C123
R166
R128
R134
R127
R133
R810
R139
R809
R807
R808
R806
R801
R126
R226
R233
R227
R228
R234
R829
R828
C808
R239
C223
R235 R236
D201
R237
R263
C955
D202
R264
R262
JR11
R261
C956
C231
R266
C945
C946
R265
R165
R130
C130
C130
C131
R171
R174
R173
R151
R152
R172
R147
R144
R141
R169
R170
R146
R145
R273
R251
R823
R827
R847
R816
JR28
R818
R813
R849
R848
R821
R805
R802
JR32
C944
C943
R803
R815
R820
R817
R812
R814
C807
R252
R271
R274
R248
R247
R272
R270
R824
R826
R825
R819
R906
R804
R822
R832
JR27
R269
R244
R241
R245
R246
D101
R161
R140
C225
C953
C954
R210
R101
C118
R158
R205
R103
C103
C951
C952
JR1
R108
R121
R116
R120
R122
R123
C115
JR5
JR2
JR6
JR4
JR3
C218
R202
C219
R257
R203
C203
R105
R223
R216
R114
R221
R220
JR31
JR30
R211
R111
R213
R212
R214
R112
R113
JR7
R222
R117
JR8
JR29
JR10
R217
R209
R109
IC202
IC102
C111
R119
C215
JR9
C211
R219
R218
R118
R124
R224
C105
R107
R107
R260
R240
IC103
IC203
Q118
Q120
D802
D801
Q801
Q808
Q809
D932
Q216
Q811
Q220
Q221
Q219
Q218
D205
Q806
Q810
Q813
Q812
D804
Q807
D803
D933
Q217
Q215
Q214
Q201
Q802
Q804
Q803
Q805
D930
D931
Q116
Q117
Q101
Q114
Q115
D105
Q121
LD802
LD801
LD803
AMPLIFIER BOARD
G
S
G
S
G
S
G
S
(Conductor side)
1
9
2
8
1
5
1
5
XM-2252HX
– 13 –
– 14 –
5-3. SCHEMATIC DIAGRAM – AMPLIFIER SECTION –
• See page 10 for IC Block Diagrams.
LPF
OFF
HPF
LPF
OFF
HPF
LOW BOOST
LEVEL
IDLING
POWER AMP
IDLING
POWER AMP
17, 18
XM-2252HX
– 15 –
– 16 –
5-4. PRINTED WIRING BOARD – POWER SECTION –
• Semiconductor
Location
D805
D-7
D806
D-7
D807
D-9
D901
C-9
D902
D-9
D903
C-5
D904
C-5
D905
D-5
D906
D-5
Ref. No.
Location
D907
C-5
D908
C-5
D909
D-5
D910
D-5
D911
C-4
D912
D-4
D913
C-4
D914
D-4
D915
A-4
D916
A-3
D917
F-4
D918
F-3
D919
A-5
D920
A-3
D921
F-5
D922
F-3
D925
C-1
D926
C-5
D927
C-5
D928
D-5
D929
D-5
D934
D-1
D935
D-1
D936
C-1
D937
C-1
D938
C-5
D939
C-5
D940
C-5
D941
C-5
D942
C-3
D943
C-3
D944
D-7
D945
D-6
IC901
C-8
IC903
C-7
Q814
D-9
Q815
D-9
Q901
C-9
Q902
C-9
Q903
D-10
Q904
A-7
Q905
A-6
Q906
A-7
Q907
A-6
Q908
F-7
Q909
F-6
Q910
F-7
Q911
F-6
Q912
B-6
Q913
B-7
Q914
E-7
Q915
E-7
Q916
C-7
Q917
C-7
Q918
C-5
Q919
D-5
Q920
C-5
Q921
D-5
Q926
C-9
Q927
C-6
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
Ref. No.
Location
S801
HI-CURRENT
D920
D916
JW249
JW250
JW251
JW255
D915
D919
Q907
C924
C923
JW252
JW253
JW254
C931
C928
JW246
JW230
JW231
JW243
JW244
JW245
JW247
JW248
C932
C934
C942
JW260
C941
C921
L904
Q921
Q919
Q918
Q920
C933
JW242
JW241
JW240
JW238
JW239
JW262
JW263
JW264
JW266
JW275
JW277
JW276
JW265
Q911
JW274
JW273
JW272
JW271
JW268
JW267
JW267
JW269
Q909
JW270
T902
JW295
JW296
JW295
JW297
Q908
JW360
JW359
JW358
JW360
JW361
JW335
JW336
JW331
JW332
JW333
JW334
JW352
JW353
JW354
JW372
JW373
F901
JW350
JW351
JW377
JW371
JW330
JW323
JW320
JW321
L901
JW378
Q902
JW346
Q901
TP801
TP802
JW345
JW343
JW344
JW342
F902
JW374
JW375
C918
C902
JW399
JW340
JW337
JW338
JW341
JW305
JW304
JW303
JW302
PL901
FAN DRIVE
CNP801
JW376
R911
JW349
JW347
JW347
CNJ801
JW348
Q904
T901
Q905
JW293
JW292
JW291
JW290
JW289
Q906
JW288
JW287
JW286
JW257
JW256
JW258
JW285
JW284
Lch
POWER SUPPLY
Rch
POWER SUPPLY
TP102
JW367
JW206
JW369
JW207
JW208
CNP804-1
CNP802-1
C927
JW213
CNJ802
D937
D936
D935
D904
D934
JW370
JW211
PROTECTOR OFF
JW214
JW215
JW216
JW217
S801
OFF
ON
ON
OFF
ON
OFF
C919
C939
JW261
L903
D903
C940
C920
C922
D909
D910
D905
D906
JW278
JW280
D908
Q927
JW279
D907
JW327
C912
C911
JW329
JW326
C913
C914
C965
C905
C917
C916
JW307
JW310
JW311
JW312
JW308
JW309
JW306
JW299
JW300
JW301
C915
IC903
JW313
JW316
C903
C904
JW317
JW313
JW314
R938
R937
JW315
JW318
JW319
JW259
JW282
JW281
JW283
JW232
JW233
JW234
JW235
JW236
JW237
C926
D918
D922
D917
D921
Q910
JW229
JW368
JW203
JW204
JW205
C929
C930
TP202
C925
JW219
JW218
JW220
JW221
JW222
JW223
JW322
JW324
JW357
JW355
JW356
BLK
RED
DC FAN
MOTOR
GND
CN801
40A
F901
+12V
REMOTE
40A
F902
1-674-541-
11
LD804
HI – VOLTAGE
TO
AMPLIFIER
BOARD
TO
AMPLIFIER BOARD
AMPLIFIER BOARD
CNP804-2
A
AMPLIFIER BOARD
CNP802-2
C
AMPLIFIER BOARD
CNJ803
B
LD805
HI – CURRENT
MODE
M
(FN801)
(Conductor side)
POWER BOARD
TO
AMPLIFIER BOARD
TO
AMPLIFIER
BOARD
LED DRIVE
S802
HI-VOLTAGE
SWITCHING
CONTROL
L902
C960
JR33
R953
R952
R951
R948
R949
R950
LD805
LD804
C959
JR26
R942
R941
C937
C938
R947
D945
R838
R836
R834
R840
JR25
R923
R917
R918
R924
TH804
TH805
TH803
JR16
R933
R904
R903
R845
R844
D807
R959
R955
R846
C908
R909
R907
R908
R912
R902
R841
R905
R901
C901
R842
JR24
JR14
R936
R934
R922
R914
R913
R921
JR12
R935
R916
R935
JR15
JR21
R839
R837
JR23
JR22
D945
R835
R833
C810
R920
R919
JR13
R932
R930
R931
R929
R928
R926
R927
R925
C910
R910
C906
C907
JR20
JR19
JR18
JR17
D925
D942
D943
D928
D929
D944
D805
D806
Q902
Q903
Q926
Q814
D902
Q917
Q916
Q915
Q914
Q912 Q913
R939
R940
D940 D938
R957 TH901
R958
D941 D939
C935
C936
D927
D926
D912
D914
D913
D911
R939
IC901
1
E
F
D
C
B
A
2
3
4
5
6
7
8
9
10
09
1
5
1
2
9
8
1
5
OFF
S802
ON
OFF
ON
OFF
ON
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