Sony HCD-C990 Service Manual - Page 37

Printed, Wiring, Boards, Schematic, Diagrams - model

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7-6. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS Note on Printed Wiring Board: • X : parts extracted from the component side. • Y : parts extracted from the conductor side. • f : internal component. • : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side) 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. • Indication of transistor. C Q These are omitted. BE Q BCE These are omitted. 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 Ω and 1/4 W or less unless otherwise specified. • f : internal component. • 2 : nonflammable resistor. • C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical 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 portant le numéro spécifié. • A : B+ Line. • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : DVD PLAY ( ) : CD PLAY [ ] : SACD PLAY • 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. Voltage variations may be noted due to normal produc- tion tolerances. • Circled numbers refer to waveforms. • Signal path. J : CD PLAY c : DVD PLAY I : SACD PLAY f : AUX IN i : OPTICAL DEITAL IN d : TUNER F : AUDIO L : VIDEO E :Y a : CHROMA r : COMPONENT VIDEO • Abbreviation AUS : Australian model CND : Canadian model HCD-C770/C990 • Circuit Boards Location DDCON board power SW board key board video board SEL board audio board not supplied (power LED board) AMP board FL board control board vol board power board DVD board HP board SW (4) board SW (3) board SW (2) board not supplied (roller motor board) stocker motor board relay board SW (1) board not supplied (sensor board) not supplied (mode motor board) RF board 37 37

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HCD-C770/C990
37
37
7-6.
NOTE
FOR
PRINTED
WIRING
BOARDS
AND
SCHEMATIC
DIAGRAMS
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
Note on Schematic Diagram:
•
All capacitors are in
μ
F unless otherwise noted.
pF:
μμ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
•
All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark
: DVD PLAY
(
)
: CD PLAY
[
]
: SACD PLAY
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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
: CD PLAY
c
: DVD PLAY
I
: SACD PLAY
f
: AUX IN
i
: OPTICAL DEITAL IN
d
: TUNER
F
: AUDIO
L
: VIDEO
E
: Y
a
: CHROMA
r
: COMPONENT VIDEO
• Abbreviation
AUS
: Australian model
CND
: Canadian model
•
Circuit Boards Location
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 portant le numéro
spécifié.
FL board
control board
vol board
HP board
DVD board
power board
AMP board
audio board
SEL board
video board
DDCON board
power SW board
key board
not supplied
(power LED board)
not supplied
(roller motor board)
not supplied
(mode motor board)
not supplied
(sensor board)
SW (1) board
SW (2) board
SW (3) board
SW (4) board
stocker motor board
relay board
RF board
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.