Diagrams; Circuit Boards Locations - Sony HCD-VP11 Service Manual

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3 7 6 3 1 5 1 5 0
CD SECTION
Note:
1. CD Block is basically constructed to operate without
adjustment.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10 MΩ impedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the
following checks.
5. Check the focus bias check when optical block is replaced.
Focus Bias Check
oscilloscope
(DC range)
BD board
TP (RF)
+
TP (VC)
–
Procedure :
1. Connect oscilloscope to TP (RF) and TP (VC) on the CD board.
Press the I/1 button to turn the power on, and press the Z
2.
(CD) button to open the CD disc tray.
3. Put disc (YEDS-18) in and press the u (CD) button to play-
back.
4. Confirm that oscilloscope waveform is as shown in the figure
below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
T E
L 1 3 9 4 2 2 9 6 5 1 3
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level:
1.2 ± 0.1 Vp-p
Checking Location:
w w w
.
http://www.xiaoyu163.com
– CD BOARD (Conductor Side) –
IC103
TP (RF)
TP (VC)
x a o u 1 6 3
y
i
http://www.xiaoyu163.com
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NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGARAMS
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
• Waveforms
– MAIN Board –
1
IC801 el (EXTAL1)
4.6Vp-p
238ns
2
IC801 os (TX)
5.0Vp-p
30.5µs
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3 7 6 3 1 5 1
6-1. CIRCUIT BOARDS LOCATION
LCD board
c o
.
HEADPHONE board
LOADING board
13 13
SECTION 6

DIAGRAMS

2 4 2
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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
1 / W or less unless otherwise
4
specified.
• ¢ : 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.
• 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
E
: TAPE PLAY
a
: TAPE RECORD
J : CD PLAY (ANALOG OUT)
c : CD PLAY (DIGITAL OUT)
• Abbreviation
SP : Singapore model.
MY : Malaysia model.
HK : Hong Kong model.
TH : Thai model.
5 0 8 9 2 4 9 8 2
EA : Saudi Arabia model.
SPEAKER board
POWER board
VIDEO OUT board
m
MAIN board
CONTROL board
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