23
23
HCD-WZ8D
SECTION 4
DIAGRAMS
Circuit Boards Location
REGULATOR board
ENTER-SW board
CD-TC SW board
BACK LIGHT board
MAIN board
PANEL board
4CH-VOL board
DMB03 board
HP AMP board
MIC board
LCD board
MS-128 board
VIDEO board
RF 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.
•
¢
: internal component
•
2
: nonflammable resistor
•
5
: fusible resistor
•
C
: panel designation
Note on Printed Wiring Boards:
•
X
: parts extracted from the component side
•
Y
: parts extracted from the conductor side
•
b
: Pattern from the side which enables seeing
•
A
: B+ Line
•
B
: B– Line
•
H
: adjustment for repair
• Power voltage is fed with DXA-WZ8D from external con-
nector (SYSTEM CONTROL 1, 2).
• 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
: AUDIO
L
: VIDEO
E
: PB (TAPE)
a
: REC (TAPE)
J
: CD
c
: DVD
d
: TUNER
h
: MD
N
: Y
O
: CHROMA
P
: COMPONENT VIDEO
• Abbreviation
AUS
: Australian model
E2
: 120V AC area in E model
E3
: 240V AC area in E model
E15
: 220-240V AC area in E model
EA
: Saudi Arabia model
KR
: Korean model
MY
: Malaysia model
PH
: Philippines model
RU
: Russian 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.)
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(SIDE B)
the pattern face are indicated
Parts face side:
Parts on the parts face side seen from
(SIDE A)
the parts face are indicated
• Indication of transistor
B
These are omitted.
C
E
Q