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HCD-VX3A
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.)
For schematic diagrams.
Note:
• 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.
¢
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : 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.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
T E
F
: FM
L
1 3 9 4 2 2 9 6 5 1 3
g : VIDEO/MD
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
m
: CHROMA
n : Y
o : VIDEO
J
: CD
c : digital out
• Abbreviation
EA
: Saudi Arabia model
MY
: Malaysia model
SP
: Singapore model
IA
: Indonesia model
TH
: Thai model
TW
: Taiwan model
JE
: Tourist model
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: parts mounted on the conductor side.
p
•
: Through hole.
®
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
parts face are indicated.
w w w
• Indication of transistor
C
Q
These are omitted
B
C
E
B
E
These are omitted
Waveforms
CD SECTION
1
IC101 %º RFAC
2
APPROX 500mVp-p
IC101 $¡ TE
3
APPROX 200mVp-p
IC101 #ª FE
4
7.5µsec
IC101 @∞ MDP
x
a o
y
.
i
http://www.xiaoyu163.com
8
VIDEO SECTION
1
7
4Vp-p
1.3Vp-p
10MHz
IC502 !£ XOUT
8
2
2.5V
1Vp-p
H
IC505 &∞ COUT
9
3
2.5V
2Vp-p
H
IC505 ^ª YOUT
0
4
2.6Vp-p
1Vp-p
H
IC401 7 COUT
5
!¡
Q
Q
3
7
6
3
2Vp-p
H
IC401 1 YOUT
6
!™
1.2
Vp-p
H
J302 VOUT
u 1 6 3
.
24
24
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2
4
9
9
8
PANEL SECTION
5.8Vp-p
27MHz
IC509 1 XT1
4.6Vp-p
44.1kHz
IC509 !ª LRCK
4.8Vp-p
2.11MHz
IC509 !¶ BCLK
4.8Vp-p
33.8MHz
IC504 8 384FS
1
5
1
5
0
8
9
2
4
3.8Vp-p
27MHz
IC504 6 27M
2.8Vp-p
33.8MHz
IC504 !™
m
c o
2
9
9
9
8
2
9
9
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