Sony HCD-GX90D, Руководство по обслуживанию

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HCD-GX90D/RV800D
6-2. Circuit Boards Location
SUB PANEL board
PANEL board
TRANSFORMER board
SUB TRANSFORMER board
MAIN board
TC board
MB board
VIDEO board
FRONT AMP board
REG board
DRIVER board
RF board
DIODE board
MOTOR board
SENSOR board
REMOTE board
SURROUND board
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.
•
5
: fusible resistor.
•
C
: panel designation.
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
• Indication of transistor.
•
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 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.
F
: FM
f
: AM
E : PB (DECK A)
d : PB (DECK B)
G
: REC (DECK B)
c
: digital out
g
: MD (VIDEO)
• Abbreviation
CND : Canadian model
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
B
These are omitted.
C E
C
B
These are omitted.
E
Q
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
piéce por tant le numéro
spécifié.