12.2 Video Output (Chrominance Signal) Adjustment

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Do this adjustment after replacing a C.B.A.

Measurement point
 		Adjustment point
 		Mode
 		Disc
Video output terminal
 		VR3511 (mother C.B.A.)
 		Color bar 75%
PLAY (Title 46):DVDT-S15
PLAY (Title 12):DVDT-S01
 		DVDT-S15
or
DVDT-S01
Measuring equipment, tools
 		Adjustment value
Screwdriver,Oscilloscope
200mV/div, 10μsec/div
 		621mVp-p±12mV

Purpose: To maintain video signal output compatibility.

  1. Connect the oscilloscope to the video output terminal and terminate at 75 ohms.

  2. Adjust VR3511 so that the chrominance signal (C) level becomes 621 mVp-p±12 mV.


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