Adjustment - Kenwood DVF-3020 Service Manual

1. Video Output (Luminance Signal) Adjustment
Do this adjustment after replacing a C.B.A.
Measurement point
Video output terminal
Measuring equipment, tools
Screwdriver, Oscilloscope
200mV/div, 10msec/div
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.
2. Video Output (Chrominance Signal) Adjustment
Do this adjustment after replacing a C.B.A.
Measurement point
Video output terminal
Measuring equipment, tools
Screwdriver, Oscilloscope
200mV/div, 10msec/div
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 675 mVp-p±13 mV.

ADJUSTMENT

Adjustment point
VR3501 (mother C.B.A.)
Adjustment point
VR3511 (mother C.B.A.)
DVF-3020
Mode
Color bar 75% DVD disc (Color bar 75%)
Adjustment value
1000mVp-p±20mV
Mode
Color bar 75% DVD disc (Color bar 75%)
Adjustment value
675mVp-p±13mV
Disc
Disc
7