![background image](http://html.mh-extra.com/html/sony/hcd-v8900/hcd-v8900_service-manual_420894023.webp)
HCD-V8900/V8900AV
– 29 –
WAVEFORMS
– BD SECTION –
1
IC602
@¢
XTAL
– MAIN SECTION (1/5) –
1
2
IC701
!£
XT2
IC701
0
X2
– MAIN SECTION (2/5) –
4.8Vp-p
8MHz
32.768kHz
5.2Vp-p
8MHz
5.5Vp-p
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.
•
%
: indicates tolerance.
•
¢
: 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
E
: PB (DECK A)
a
: REC (DECK A)
d
: PB (DECK B)
m
: CHROMA
n
: Y
o
: VIDEO
J
: CD
I
: PHONO
• Abbreviation
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.
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
Q
C
These are omitted
E
B
1
2
3
4
IC101
@ª
FE (PLAY)
IC101
#§
RFAC (PLAY)
IC101
@¶
TE (PLAY)
IC101
(§
MDP (PLAY)
1.3Vp-p
2.5V
APPROX 500mVp-p
2.5V
APPROX 200mVp-p
2.6Vp-p
7.5
µ
sec
1
2
3
4
IC201
2
XTL0O
TP115 LRCK
TP117 BCLK
IC201
`⁄‚fl
XTL2O
5
IC201
(£
VSYNC
6
IC201
(™
HSYNC
7
IC271
8
OSCIN
5Vp-p
44.1kHz
2.11MHz
5Vp-p
45MHz
0.86Vp-p
5Vp-p
V
5Vp-p
H
4.6Vp-p
6.74MHz
8
9
!º
IC452
3
IC401
@¢
COMPO
IC401
@ª
YOUT
1.2Vp-p
H
H
0.6Vp-p
4.5Vp-p
13.5MHz
!¡
TP410 DCLK
27MHz
4.4Vp-p
3Vp-p
28.63636MHz
!™
TP409 27M
!£
TP453 COUT
!¢
TP452 YOUT
H
1.8Vp-p
!∞
TP451 VOUT
H
1.5
Vp-p
!§
IC701
%¡
EXTAL
5.4Vp-p
10MHz
TP101 384FS
!¶
!•
IC901
0
X2
TP104 LRCK
!ª
TP102 BCLK
@º
@¡
IC101
@¡
XOUT
5.6Vp-p
5MHz
44.1kHz
5Vp-p
5Vp-p
2.11MHz
33.8MHz
5Vp-p
1.5Vp-p
33.8MHz
– VIDEO SECTION –
1.2Vp-p
H
2Vp-p
H
– 30 –
1
IC601
!™
X-OUT
– PANEL SECTION –
4Vp-p
8MHz
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