Diagrams - Sony HCD-VZ30AV Service Manual

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3 7 63 1515 0
VIDEO SECTION
Frequency Adjustment
Connection:
VIDEO board
(27 MHz)
Procedure:
1. Connect the frequency counter to check point of the VIDEO
board.
2. Turned ?/1 button switch on.
3. Press the FUNCTION button to select the CD.
4. Adjust CT503 on the VIDEO board so that the frequency counter
reading 27.0 MHz ± 80 Hz at stop status.
Adjustment Location:
[VIDEO BOARD] (SIDE A)
J301
TE
L 13942296513
CN501
SL503
SL502
SL501
CHECK LED
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frequency counter
J302
IC507
(GND)
CT503
(27MHz)
VIDEO
Frequency
Adjustment
CN503
CN502
x ao
y
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8
NOTE FOR PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed
in each block)
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• : internal component.
f
• b : Pattern from the side which enables seeing.
Caution:
Pattern face side:
(Side B)
Parts face side:
(Side A)
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
specified.
• : internal component.
f
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
Q Q
3 6 7 1 3
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• 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.
F : TUNER (FM/AM)
E
: PLAYBACK (DECK A)
d
: PLAYBACK (DECK B)
G
: RECORD
J
: CD PLAY (ANALOG OUT)
c : CD PLAY (DIGITAL OUT)
N : MIC INPUT
• Abbreviation
EA : Saudi Arabia model.
SP : Singapore model.
MY : Malaysia model.
TH : Thai model.
HK : Hong Kong model.
CH : Chinese model.
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SECTION 6

DIAGRAMS

2 9 9 4 2 8
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.
1
/ W or less unless otherwise
4
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9
23