HCD-VR50/VR70
– 33 –
– 34 –
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
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
: parts extracted from the component side.
: parts extracted from the conductor side.
: parts mounted on the conductor side.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
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 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
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.
SP
: Singapore model.
MY
: Malaysia model.
HK
: Hong Kong model.
IC101
@∞
MDP
1
2
3
4
WAVEFORMS
– CD SECTION –
IC101
%º
RFAC
IC101
$¡
TE
IC101
#ª
FE
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
• Indication of transistor
C
These are omitted
E
B
1.3Vp-p
1
2
3
IC505
&∞
COUT
IC505
^ª
YOUT
4
5
6
7
8
9
IC509
!¶
BCLK
IC509
!ª
LRCK
0
!¡
IC502
!£
XOUT
IC401
7
COUT
IC401
1
YOUT
IC509
1
XT1
IC504
8
384FS
IC504
6
27M
IC504
!™
– VIDEO SECTION –
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.
Q
C
These are omitted
E
B
– PANEL FL SECTION –
1
2
IC501
!¡
XC-OUT
IC501
!£
X-OUT
– MAIN (2/5) SECTION –
IC601
&™
X OUT
1
32.768kHz
5.2Vp-p
16MHz
5.5Vp-p
12.5MHz
3.4Vp-p
APPROX 500mVp-p
2.5V
APPROX 200mVp-p
2.5V
2.6Vp-p
7.5
µ
sec
4Vp-p
10MHz
H
1Vp-p
2Vp-p
H
H
1Vp-p
2Vp-p
H
27MHz
5.8Vp-p
4.8Vp-p
2.11MHz
4.6Vp-p
44.1kHz
4.8Vp-p
33.8MHz
2.8Vp-p
33.8MHz
3.8Vp-p
27MHz
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
