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VIDEO SECTION
Note :
1. VIDEO board is basically designed to operate without adjust-
ment. Therefore, check each item in order given.
2. Use HLV-402 (8-909-870-00) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩ 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.
Video Level Check (VIDEO BOARD)
Purpose
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
75 Ω
set
J721
VIDEO OUTPUT
Procedure:
1. Connect oscilloscope to VIDEO output.
2. Load a disc HLV-402 (8-909-870-00) playback.
3. Check that the video level is 1.0 ± 0.1 Vp-p.
(WHITE 100%)
Oscilloscope
1.0 ± 0.1 Vp-p
HCD-XGV50
21
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