Sony CDX-GT100 - Fm/am Compact Disc Player, Руководство по обслуживанию

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3 3
CDX-GT10W/GT100/GT150/GT150S
CDX-GT10W/GT100/GT150/GT150S
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
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. (p: pF)
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.
•
f
: internal component.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• CD mechanism section
no mark : CD PLAY
• Main (1/3), (2/3), (3/3) and Key sections
no mark : FM
( ) : AM/MW/LW
< > : CD PLAY
∗
: Impossible to measure
• 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.
J
: CD PLAY
F : FM
f
: AM/MW/LW
L
: AUX
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 identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Q
C
These are omitted
E B
E
These are omitted
C B
C
These are omitted
B E
SECTION 1
DIAGRAMS
• WAVEFORMS
— SERVO BOARD (CD PLAY) — — MAIN BOARD —
1.2 Vp-p
16.9344 MHz
1
IC1
wd
(XTAL)
0.2 V/DIV, 0.2
µ
sec/DIV
0.85 V to
1.45 Vp-p
2
IC1
uj
(AGCI)
0.5 V/DIV, 0.5 µ sec/DIV
4
IC1
oh
(TEO)
0 V
Approx. 200 mVp-p
50 mV/DIV, 5 msec/DIV
3
IC1
od
(FEO)
200 mV/DIV, 5 msec/DIV
Approx. 620 mVp-p
0 V
1 Vp-p
8.664 MHz
1
IC51
9
(XTI)
0.7 Vp-p
32.768 kHz
2
IC501
i;
(XIN)
0.8 Vp-p
18.432 MHz
3
IC501
is
(OSC IN)
0.2 V/DIV, 0.1 µ sec/DIV
0.5 V/DIV, 0.1
µ
sec/DIV
0.5 V/DIV, 0.1
µ
sec/DIV
Ver. 1.4