Read Sony CDX-GT250MP / CDX-GT252MP Service Manual online
CDX-GT250MP/GT252MP
CDX-GT250MP/GT252MP
15
15
For Schematic Diagrams:
Note:
• All capacitors are in
• 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
specifi ed.
• f : Internal component.
• C : Panel designation.
• 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.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
(
)
:
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 production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J :
J :
CD
F :
FM
f :
MW/LW
L :
AUX
For Printed Wiring Boards:
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• a
• 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.)
• Indication of transistor.
C
B
These are omitted.
E
Q
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
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.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Waveforms
– MAIN Board –
1.2 Vp-p
32.768 kHz
3.5 Vp-p
7.92 MHz
1 V/DIV, 20 ȝsec/DIV
2 V/DIV, 50 nsec/DIV
1
IC401
qa (XOUT)
2
IC401
qd (OSCOUT)
0.06 Vp-p
4 MHz
0.05 V/DIV, 50 nsec/DIV
3
IC001
qh (XTAL1)
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
Click on the first or last page to see other CDX-GT250MP / CDX-GT252MP service manuals if exist.