Diagrams - Sony HCD-GX250 Servce Manual

Q Q
3 7 6 3 1 5 1 5 0
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
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
/ W or less unless otherwise
4
specified.
• : internal component.
f
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce portant le numéro
number specified. spécifié.
• A : B+ Line.
• B : 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.
no mark : FM
( ) : CD STOP
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
T E
L 1 3 9 4 2 2 9 6 5 1 3
• Signal path.
F : TUNER
E : PB (DECK A)
d : PB (DECK B)
G
: REC (DECK B)
J
: CD
f
: AUDIO
• Waveforms
– PANEL BOARD –
1
IC601 qd (I-XT2)
5.2 Vp-p
30.5 s
2 V/DIV, 10 s/DIV
2
IC601 qh (CF2)
4.9 Vp-p
100 ns
2 V/DIV, 40 ns/DIV
w w w
.
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SECTION 5

DIAGRAMS

Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from
(SIDE A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE B) the parts face are indicated.
• Indication of transistor.
C
These are omitted. Q
B E
Q
B C E
These are omitted.
• Abbreviation
CND : Canadian model
x a o u 1 6 3
y
i
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8 9
Circuit Boards Location
SW board
MOTOR (LD) board
CONNECT board
TRANS board
Q Q
3 7 6 3 1 5 1
SUB-TRANS board
REM board
PANEL board
1 STREAM LED board
GAME JACK board
c o
.
21 21
2 4 2
9 8
SENSOR board
BD80A board
MOTOR (TB) board
DRIVER board
AMP board
5 0 8 9 2 4 9 8 2
VIDEO OUT board
MAIN board
H/P JACK board
m
HCD-GX250
9 9
9 9