SCD-1, SCD-777ES (serv.man3) - Sony Audio Service Manual (repair manual). Page 17

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17
17
SECTION  7
DIAGRAMS
7-1.
NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
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.
Note:
Les composants identifiés par
une marque 
0
 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
%
: indicates tolerance.
f
: internal component.
5
: fusible resistor.
C
: panel designation.
U
: B+ Line.
V
: B– Line.
• Voltages and waveforms are dc with respect to ground in
adjustment mode.
no mark :STOP
(
) :SACD
〈〈
 
〉〉
:CD
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: SACD
c
: CD
I
: DIGITAL OUT
Note on Printed Wiring Board:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
a
: Through hole.
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
• Indication of transistor
C
B
These are omitted.
E
Q
• Circuit Boards Location
SW-L board
MAIN board
STB board
POWER board
AC board
COAX board
OPT board
SW board
BAL board (SCD-1)
PIN board
LOAD-SW board
LOAD-MOT board 
AUDIO board
LOAD-CN board
SW-R board
DISPLAY board
SLD-MOT board
RF board
SLD-FG board
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