Sony XM-502Z Service Manual ▷ View online
8
8
XM-502Z
3-2. SCHEMATIC DIAGRAM • Refer to page 9 for IC Block Diagram and Common Note on Schematic Diagrams.
• Waveform
IC901
5
1
1V/DIV, 5µsec/DIV
15µsec
3.8Vp-p
IC B/D
C103
C203
R202
Q108
Q109
Q110
Q111
R133
Q105
Q104
D201
Q204
Q205
Q208
Q210
R233
Q211
Q209
R901
R902
R903
C909
C901
Q106
Q206
T901
F901
L901
CN902
C102
CN901
C101
C202
C201
R101
R201
R104
R105
R204
R205
C302
R302
R301
C301
R102
R103
R203
IC301(1/2)
IC301(2/2)
IC303(1/2)
IC303(2/2)
R106
C104
C105
R107
C303
C106
SW301
R108 R109
C108
R111
C206
R208 R209
R210 R211
SW301
C207
R206
C204
C205
C304
IC302(1/2)
IC302(2/2)
C109
R112
VR301
R113
C110
C209
R212
VR301
R213
R114
R214
R115
R215
R303
Q112
Q212
R120
R137
R119
D102
R123
R125
C113
R124
C112
R122
D101
R138
R121
R118
Q103
R126
R127
C114
R129
R130
R132
R139
R218
R220
R237
R221
R238
Q203
R219
D202
R223
R225
C213
R224
C212
R222
R226
R227
R228
Q207
R231
R229
C214
R230
R239
R232
C115
C215
R234
R235
R135
R932
C902
R904
R905
R906
D901
Q901
C904
R908
D902
D903
TH901
TH902
TH903
R909
R910
R911
Q905
R915
C910
Q906
R916
C911
R917
R918
LED901
C906
R914
C908
R913
C318
R907
Q910
Q911
R927
R928
R922
R924
R925
R921
R923
R926
R919
R920
C914
C915
D303
L301
D304
C306
C307
R307
R308
C308
C309
C310
C311
D305
D306
R313
R314
R319
Q303
Q304
Q309
C312
R315
R316
R320
Q305
Q306
Q310
C313
R318
C316
C317
D307
R931
Q301
D301
R305
D302
C305
R306
C314
R317
C315
IC902
C907
R912
R304
Q907
C107
R110
C208
JR1
R207
Q101
Q201
Q102
C111
R116
R128
Q107
R117
R131
R134
CN903
Q202
C211
R216
R217
Q307
Q308
Q908
Q909
Q302
C916
CN903
D904
Q903
Q904
Q902
IC901
C905
C210
C903
9
XM-502Z
IC901 µPC494GS
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OSC
REF. REG.
ERROR
ERROR
0.1V
3-3. IC BLOCK DIAGRAM
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 diagram:
• 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.
•
A
: B+ Line.
•
B
: B– Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from +12V and REM terminals.
• Voltage is dc with respect to ground under no-signal
condition.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
for printed wiring boards:
•
: Pattern from the side which enables seeing.
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
10
XM-502Z
SECTION 4
EXPLODED VIEWS
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• Abbreviation
CND : Canadian model
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories are given in the last of this parts list.
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
Ref. No.
Part No.
Description
Remark
4-1. HEAT SINK (MAIN) SECTION
R
Ref. No.
Part No.
Description
Remark
R
0 F901
1-532-947-11 FUSE (BLADE TYPE) (AUTO FUSE) (30A)
#1
7-685-546-14 SCREW +BTP 3X8 TYPE2 N-S
#1
#1
not supplied
not supplied
#1
#1
#1
F901
11
XM-502Z
4-2. MAIN BOARD SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
#2
#2
not supplied
not supplied
not supplied
#1
#3
#3
#3
#4
#4
#4
52
53
54
51
51
A-3283-670-A MAIN BOARD, COMPLETE
52
3-266-084-01 PANEL (FRONT) (US,CND,E)
52
3-266-084-11 PANEL (FRONT) (AEP,UK)
53
3-266-086-01 COVER (LED)
54
3-912-431-01 SCREW (+–P)
#1
7-685-546-14 SCREW +BTP 3X8 TYPE2 N-S
#2
7-685-546-19 SCREW +BTP 3X8 TYPE2 N-S
#3
7-682-948-01 SCREW +PSW 3X8
#4
7-682-648-09 SCREW +PS 3X8
Click on the first or last page to see other XM-502Z service manuals if exist.