Read Sony CDX-M730 Service Manual online
30
30
CDX-M730
tuner unit
(TU601)
(TU601)
IN SELF SW board
LOAD-SW board
SW board
DISPLAY board
KEY board
SERVO board
SL SW board
MAIN board
SUB(CD) board
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
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 diagram:
• 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.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• 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 produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM/MW/LW
J
: CD
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
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)
(Side A)
parts face are indicated.
4-5. CIRCUIT BOARDS LOCATION
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
1.8Vp-p
2
3.3msec
IC1
ts
(PACK)
3
IC1
uj
(RFO)
4
Approx. 100mVp-p
IC1
oa
(FEO)
0V
5
Approx. 100mVp-p
IC1
od
(TEO)
19.9344MHz
IC1
wd
(XTAL)
5Vp-p
1.5Vp-p
0V
• Waveforms
—
Main Board
—
(MODE: FM)
1
3.8Vp-p
2
32.768kHz
IC801
uf
(XOA)
3
3.68MHz
IC801
os
(XO)
4
18.43MHz
IC301
ih
(EXTAL)
5
4MHz
IC803
4
(XOUT)
4.3MHz
IC601
4
(XO)
5.4Vp-p
2.6Vp-p
3.8Vp-p
3.5Vp-p
Click on the first or last page to see other CDX-M730 service manuals if exist.