Circuit Boards Location - Sony HCD-F250AV Service Manual

Q Q

6-4. CIRCUIT BOARDS LOCATION

3 7 6 3 1 5 1 5 0
TRANS board
PANEL board
SW/POWER board
HP/MIC board
DOOR LED board
T E
L 1 3 9 4 2 2 9 6 5 1 3
CD MOTOR board
LEAF SW board
AUDIO board
w w w
.
CD LED board
TABLE SENSOR board
SURR board
AMPLIFIER board
FUNC board
CD DOOR board
DISC SENSOR (S) board
BU board
DOOR SW board
x a o
y
i
DISC SENSOR (R) board
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THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this 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
specified.
• % : indicates tolerance.
¢
• : internal component.
MAIN board • 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note:
The components identi-
fied by mark ! or dotted
line with mark ! are criti-
cal for safety.
Replace only with part
number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
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• Circled numbers refer to waveforms.
3 7 6 3
• Signal path.
F
: FM
g : VIDEO/MD
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
c : CD DIGITAL
• Abbreviation
CND : Canadian
u 1 6 3
.
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2 4
9 9 8
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• ¢ : internal component.
• b : Pattern from the side which enables seeing.
1 / W or less unless otherwise
4
Note:
Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
1 5 1 5 0 8 9 2 4
m
c o
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HCD-F250AV
2
9 9
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