Sony HCD-V808 Service Manual page 18

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VIDEO CD COLOR BAR MODE
On this mode, the data of the color bar signal as a picture signal
and the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC701) for the video CD signal check.
When measurement of the voltage and waveform on the VIDEO
board, perform it in this mode.
For reference, the color bar signal can be observed at J9001
(VIDEO OUT) and the sound signal can be observed at J101
(VIDEO/MD (AUDIO) OUT) using an oscilloscope.
Procedure:
1. Turned power switch on.
2. Press the FUNCTION button to select the CD.
3. Connect the SL701 on the VIDEO board with solder.
4. After measuring, remove the soldering installed.
set
75 Ω
J9001 (VIDEO OUT)
B
A
C
H
A = 0.9 to 1.1 Vp-p
B = 0.678 to 0.75 Vp-p
TE
L 13942296513
C = 0.214 to 0.328 Vp-p
Fig. 1 Video CD Color Bar Signal Output from J9001
(VIDEO OUT)
[VIDEO BOARD] (SIDE-B)
SL703
SL702
IC251
IC751
SL701
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oscilloscope
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E-F BALANCE MODE
Refer to the SECTION 6 ELECTRICAL ADJUSTMENTS page
22.
Procedure:
1. Turned power switch on.
2. Press the FUNCTION button to select the CD.
3. Connect the SL701 and SL703 on the VIDEO board with sol-
der.
4. Press the · ∏ button in playback.
5. Every pressing the REPEAT button on the remote commander,
the tracking servo and sledding servo are turned on or off.
6. When the servo is off, the counter on front panel will not be
changed.
7. After measuring, remove the soldering installed.
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