Sony MHC-V818 Service Manual ▷ View online
– 35 –
– 36 –
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
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
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
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.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
p
: parts mounted on the conductor side.
•
®
: Through hole.
•
b
: 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.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal pro-
duction tolerances.
duction tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• 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.
TW
: Taiwan model.
IA
: Indonesian model.
IC101
(§
MDP
1
2
3
4
WAVEFORMS
– CD SECTION –
– CD SECTION –
IC101
#§
RFAC
IC101
@¶
TE
IC101
@ª
FE
1
2
IC801
2
X-OUT
IC601
8
X-OUT
3
IC851
2
TX
– DISPLAY SECTION –
1
2
IC501
!£
XT2
IC501
0
X2
– MAIN SECTION –
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
APPROX 500mVp-p
2.5V
APPROX 200mVp-p
2.5V
2.6Vp-p
7.5
µ
sec
1
2
3
4
IC505
&∞
COUT
IC505
^ª
YOUT
5
6
7
8
9
!º
IC509
!¶
BCLK
IC509
!ª
LRCK
!¡
!™
!£
IC502
!£
XOUT
5MHz
5.5Vp-p
32.768kHz
5Vp-p
8MHz
4Vp-p
8MHz
4.3Vp-p
4.09MHz
3.6Vp-p
4Vp-p
10MHz
IC402
@º
XOUT
4Vp-p
8MHz
H
1Vp-p
2Vp-p
H
IC401
7
COUT
IC401
1
YOUT
2Vp-p
H
J302 VOUT
H
1.2
Vp-p
IC509
1
XT1
27MHz
5.8Vp-p
4.6Vp-p
44.1kHz
4.8Vp-p
2.11MHz
IC504
8
384FS
4.8Vp-p
33.8MHz
IC504
6
27M
3.8Vp-p
27MHz
2.8Vp-p
33.8MHz
IC504
!™
– VIDEO SECTION –
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
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
H
1Vp-p
– 37 –
– 38 –
HCD-V818
8-3. SCHEMATIC DIAGRAM – CD SECTION –
• See page 35 for Waveforms.
• See page 85 for IC Block Diagrams.
• See page 85 for IC Block Diagrams.
(Page 47)
– 39 –
– 40 –
HCD-V818
8-4. PRINTED WIRING BOARD – CD SECTION –
• See page 22 for Circuit Boards Location.
Ref. No.
Location
• Semiconductor
Location
IC101
B-1
IC103
A-2
Q102
A-2
Q103
A-2
Ref. No.
Location
• Semiconductor
Location
IC102
B-2
IC104
B-3
Q101
A3
KSS-213D/Q-NP
(Page 46)
– 41 –
– 42 –
HCD-V818
8-5. SCHEMATIC DIAGRAM – DECK SECTION –
• See page 86 for IC Block Diagrams.
(Page 56)
Click on the first or last page to see other MHC-V818 service manuals if exist.