Circuit Boards Location - Sony HCD-GSX75 Service Manual

HCD-GSX75
QQ
3 7 63 1515 0
7-1.

Circuit Boards Location

DISPLAY board
KEY board
GAME board
THIS NOTE IS COMMON FOR PRINTED WIRING
TE
L 13942296513
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
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1 /
4
specified.
• : internal component.
f
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
une marque 0 sont critiques
fied by mark 0 or dotted
line with mark 0 are criti-
pour la sécurité.
cal for safety. Ne les remplacer que par une
piéce por tant le numéro
Replace only with part
spécifié.
number specified.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
CD board section
no mark : CD PLAY
Other board section
www
no mark : FM
( ) : TAPE PLAY
< > : TAPE REC
[ ] : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ). .
Voltage variations may be noted due to normal produc-
tion tolerances.
22
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SECTION 7
DIAGRAMS
CD LED board
KEY(2) board
W or less unless otherwise
x ao
y
i
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8
CD board
AMP board
D-SENSOR (OUT) board
TUNER board
LOAD SW board
LT MOTOR board
D-SENSOR (IN) board
T-SENSOR board
H/P board
Q Q
• Waveforms are taken with a oscilloscope.
3 6 7 1 3
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
c : DIGITAL OUT
E
: TAPE (PB)
a
: TAPE (REC)
j
: AUDIO IN
k : VIDEO IN
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: internal component.
f
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
(Conductor B)
Parts face side:
(Component A)
• Indication of transistor
C
Q These are omitted.
B E
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.
B C E
These are omitted.
2 9 9 4 2 8
SPK board
POWER board
MAIN board
1 5 0 5 8 2 9 9 4
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
m
co
9 9
2 8 9 9