Sony CDX-GT260MP, Руководство по обслуживанию

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CDX-GT31MP/GT260MP/GT267ME/GT310MP/GT313MP
CDX-GT31MP/GT260MP/GT267ME/GT310MP/GT313MP
21 21
• Waveforms
– MAIN Board –
For Schematic Diagrams.
Note:
• All capacitors are in μ F 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
speci fi ed.
•
f
: Internal component.
•
C
: Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•
A
: B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
) : AM
< > : CD PLAY
* : Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
F : FM
f
: AM
L
: AUX
g
: BUS AUDIO
• Abbreviation
AR :
Argentina model
CND : Canadian model
EA
: Saudi Arabia model
IND : Indian model
MX : Mexican model
RU : Russian model
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.)
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A) Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note:
The components identi-
fi ed by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number speci
fi ed.
Note:
Les composants identi fi és
par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spéci
fi é.
• Indication of transistor.
C
B
These are omitted.
E
Q
2.7 Vp-p
32.768 kHz
3.5 Vp-p
7.92 MHz
0.5 V/DIV, 20 ȝ sec/DIV
0.5 V/DIV, 50 nsec/DIV
1
IC501
qa
(XOUT)
2
IC501
qd
(OSCOUT)
• Abbreviation
AR :
Argentina model
CND : Canadian model
EA
: Saudi Arabia model
IND : Indian model
MX : Mexican model
RU : Russian model