Read Sony XM-754SX Service Manual online
2
XM-754SX
• IC Block Diagram
IC901 µPC494GS-T1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OSC
REF. REG.
ERROR
ERROR
0.1V
Q204
E-10
Q207
D-11
Q208
E-11
Q209
D-12
Q210
E-12
Q211
D-12
Q212
D-13
Q301
G-5
Q302
G-4
Q303
D-5
Q304
E-5
Q307
D-4
Q308
E-4
Q309
D-3
Q310
E-3
Q311
D-3
Q312
D-2
Q401
H-6
Q402
G-4
Q403
F-5
Q404
F-5
Q407
F-4
Q408
F-4
Q409
F-3
Q410
G-3
Q411
F-3
Q412
G-3
Q801
E-9
Q802
F-9
Q803
C-13
Q804
C-13
Q805
C-13
Q809
H-11
Q810
G-13
Q811
G-13
Q812
H-13
Q813
G-13
Q901
F-10
Q902
G-10
Q903
G-10
Q904
B-9
Q905
B-8
Q906
B-7
Q907
B-6
Q908
B-8
Q909
B-7
Q910
F-7
Q911
F-6
R141
F-13
R241
D-13
R341
D-2
R441
F-2
D801
F-8
D802
F-8
D805
F-11
D812
F-9
D813
F-9
D822
G-13
D823
G-13
D824
F-13
D825
D-13
D826
D-2
D827
G-2
D828
H-12
D829
H-12
D901
G-10
D902
G-10
D903
E-7
D904
E-7
D905
D-8
D906
D-8
D907
B-10
D908
B-10
D909
B-5
D910
B-6
D911
D-8
D912
D-8
D913
E-7
D914
E-6
D917
D-6
D918
D-6
IC801
G-7
IC806
H-8
IC807
H-8
IC808
G-6
IC813
H-5
IC814
H-5
IC815
F-8
IC901
G-11
IC902
F-10
Q101
H-9
Q102
E-9
Q103
F-11
Q104
F-10
Q107
E-11
Q108
F-11
Q109
F-12
Q110
G-12
Q111
F-12
Q112
F-13
Q201
G-8
Q202
E-8
Q203
E-11
• Semiconductor Location (MAIN SECTION)
Ref. No.
Location
Ref. No.
Location
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
Note:
• 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.
•
%
: indicates tolerance.
• 2 : nonflammable resistor.
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• A : B+ Line.
• B : B– Line.
• Power voltage is dc 14.4V and fed with regulated dc power
• 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:
Note:
• X : parts extracted from the component side.
•
Note:
• X : parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• (
) : Refer to page of Supplement-2.
• (( )) : Refer to page of Service manual.
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