Sony CDX-GT25MPW Service Manual page 17

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards:
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• : Through hole.
a
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen
(SIDE B) from the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE A) the parts face are indicated.
• Indication of transistor.
C
Q
These are omitted.
B E
• Abbreviation
AR : Argentina model
CND : Canadian model
EA : Saudi Arabia model
IND : Indian model
MX : Mexican model
RU : Russian model
CDX-GT25MPW/GT30MP/GT250MP/GT257ME/GT300MP/GT303MP
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 / W or less unless otherwise
4
specifi ed.
• : Internal component.
f
• C : Panel designation.
Note: Note:
The components identi- Les composants identifi és
fi ed by mark 0 or dotted par une marque 0 sont
line with mark 0 are criti- critiques pour la sécurité.
cal for safety. Ne les remplacer que par
Replace only with part une pièce portant le nu-
number specifi ed. méro spécifi é.
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM/MW/LW/SW
< > : CD PLAY
* : Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
: AM/MW/LW/SW
f
L : AUX
• Abbreviation
AR : Argentina model
CND : Canadian model
EA : Saudi Arabia model
IND : Indian model
MX : Mexican model
RU : Russian model
CDX-GT25MPW/GT30MP/GT250MP/GT257ME/GT300MP/GT303MP
• Waveforms
– MAIN Board –
1
IC401 qa (XOUT)
1.2 Vp-p
32.768 kHz
1 V/DIV, 20 sec/DIV
2
IC401 qd (OSCOUT)
3.5 Vp-p
7.92 MHz
2 V/DIV, 50 nsec/DIV
3
IC001 qh (XTAL1)
0.06 Vp-p
4 MHz
0.05 V/DIV, 50 nsec/DIV
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