Electrical Adjustment; Video Output (Luminance Signal) Adjustment - Panasonic DVD-A7 Service Manual

1. Remove the 2 screws.
2. Remove the 2 screws.
3. Release the three tabs.

12. Electrical Adjustment

12.1. Video Output (Luminance Signal) Adjustment

Do this adjustment after replacing a P.C.B.
Measurement point
Video output
terminal
Measuring equipment, tools
Screwdriver, Oscilloscope
200mV/div, 10
Purpose: To maintain video signal output compatibility.
1. Connect the oscilloscope to the video output terminal and
terminate at 75 ohms.
2. Adjust VR3501 so that the luminance signal (Y+S) level becomes
1000 mVp-p±20 mV.
Adjustment point
VR3501 (mother
P.C.B.)
sec/div
Mode
Color bar 75%
PLAY (Title 46):DVDT
-S15
PLAY (Title 12):DVDT
-S01
Adjustment value
1000mVp-p±20mV
38
Disc
DVDT-S15
or
DVDT-S01