19
19
HCD-VX777
6-1. CIRCUIT BOARD LOCATION
POWER board
MAIN board
SENSOR board
SUB TRANS board
SW board
MAIN TRANS board
CD SW board
PAD SWITCH board
PANEL board
DRIVER board
VIDEO board
LEAF SW board
HEAD (B) board
HEAD (A) board
BD board
MOTOR board
SENSOR board
SECTION 6
DIAGRAMS
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.
•
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.
Note:
The components identified by mark
0
or dotted line with
mark
0
are critical for safety.
Replace only with part number specified.
•
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)
J
: CD
c
: digital out
m
: CHROMA
n
: Y
: VIDEO
• Abbreviation
EA
: Saudi Arabia model
IA
: Indonesian model
SP
: Singapore model
TH
: Thai 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
Q
C
B
These are omitted.
E
Q
Содержание HCD-VX777
Страница 13: ...13 HCD VX777 VIDEO BOARD SIDE A J301 CN501 CN301 1 2 3 CN503 SL503 SL502 SL501 CHECK LED CN502 ...
Страница 37: ...37 37 HCD VX777 6 17 SCHEMATIC DIAGRAM POWER AMP SECTION Page 47 Page 47 Page 34 Page 34 ...
Страница 41: ...41 41 HCD VX777 6 21 SCHEMATIC DIAGRAM CD SW PAD SWITCH SECTION Page 39 Page 39 ...
Страница 43: ...43 43 HCD VX777 6 23 SCHEMATIC DIAGRAM LEAF SW SECTION E 4 4 Page 34 ...
Страница 45: ...45 45 HCD VX777 6 25 SCHEMATIC DIAGRAMS DRIVER SECTION See page 50 for IC Block Diagrams IC B D B 2 4 Page 32 ...
Страница 47: ...47 47 HCD VX777 6 27 SCHEMATIC DIAGRAM TRANS SECTION H Page 37 Page 37 ...