Read Sony CDX-S2250 / CDX-S2250S Service Manual online
16
16
CDX-S2250/S2250S
CDX-S2250/S2250S
• Waveforms
— SERVO Board —
(CD PLAY)
— MAIN Board —
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
For printed wiring boards.
Note:
• X
• 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 (1/2), (2/2)
no mark : CD PLAY
• Main (1/4), (2/4), (3/4), (4/4) and Display sections
no mark : FM
no mark : CD PLAY
• Main (1/4), (2/4), (3/4), (4/4) and Display 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.
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.
J
: CD PLAY
F
: FM
f
: MW/LW
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)
parts face are indicated.
Note:
The components identified by mark
0
or dotted line with
mark
0
are critical for safety.
Replace only with part number specified.
Q
C
These are omitted
E
B
E
These are omitted
C
B
C
These are omitted
B
E
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 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.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
1.6Vp-p
8.664MHz
1
IC51 0 (XTO)
2
IC501 i; (XOUT)
1.4Vp-p
32.678kHz
1.2Vp-p
18.432MHz
3
IC501 id (OSC IN)
1
IC2 4 (FEI)
Approx.
1Vp-p
1Vp-p
0 V
0.6 Vp-p
16.9344 MHz
Approx. 100 mVp-p
50 mV/DIV, 5 msec/DIV
0.5 V/DIV, 0.5 µsec/DIV
2
IC2 6 (TEI)
200 mV/DIV, 5 msec/DIV
6
IC2 oh (FPI2),
0.5 V/DIV, 0.5 µsec/DIV
Approx. 400 mVp-p
3
IC2 wd (XI)
0.2 V/DIV, 0.2 µsec/DIV
7
IC3 ia (X1)
0.5 V/DIV, 0.2 µsec/DIV
1.1 Vp-p
12 MHz
4
IC2 uj (RFI)
0.5 V/DIV, 0.5 µsec/DIV
5
IC2 of (FNI2), og (FNI1)
1.5 Vp-p
oj
(FPI1)
1.5 Vp-p
0 V
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