Sony CDX-V3800 Service Manual page 16

CDX-V3800
Ver. 1.3
• 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 / W or less unless otherwise
4
specified.
• f : internal component.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• 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 (1/3), (2/3), (3/3) and Display sections
no mark : FM
( ) : AM
< > : CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
CDX-V3800
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: 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.
C
Q
These are omitted
B E
B E C
These are omitted
E C B
These are omitted
• WAVEFORMS
— Servo Board — (MODE: CD PLAY)
1
IC500 rd (XO)
1.8 Vp-p
16.9344 MHz
0.2 V/DIV, 0.2 µ sec/DIV
2
IC500 ts (EQO)
0.8 V to
1.3 Vp-p
0.5 V/DIV, 0.5 µ sec/DIV
3
IC100 yg (CLKIN)
1.5 Vp-p
27 MHz
0.2 V/DIV, 0.2 µ sec/DIV
16 16
— Main Board —
1
IC801 i; (XOA)
3.6 Vp-p
32.768 kHz
0.2 V/DIV, 20 µ sec/DIV
2
IC801 is (X0)
4.1 Vp-p
18.432 MHz
0.5 V/DIV, 0.1 µ sec/DIV