Electrical Adjustment - Yamaha DVD-S1200 Service Manual

5. ELECTRICAL ADJUSTMENT

Do this confirmation after replacing a P.C.B.
5.1. Video Output (Luminace Signal) Adjustment
Do this confirmation after replacing a P.C.B.
Measurement point
S-video output terminal (Y OUT)
Measuring equipment, tools
Screwdriver, Oscilloscope
200mV/div10µsec/div
Purpose: To maintain video signal output compatibility.
1. Connect the oscilloscope to the S-video output and terminate at 75 ohms.
2. Adjust VR3225 so that the Y level is 1000 mVp-p ± 20 mV.
5.2. Video Output (Chrominance Signal) Adjustment
Measurement point
S-Video output terminal (C OUT)
Measuring equipment, tools
Screwdriver,Oscilloscope
200mV/div10µsec/div
Purpose: To maintain video signal output compatibility.
1. Connect the oscilloscope to the S-video output and terminate at 75 ohms.
2. Adjust VR3221 so that the Magenta level is 826 mVp-p ± 40 mV.
Mode
PLAY DTDT-S15 (Title 10), DVDT-S01 (Title 48)
Color bar 100%
Adjustment value Adjustment point
1000mVp-p±20mV VR3225
Mode
PLAY DVDT-S15 (Title 10), DVDT-S01 (Title 48)
Color bar 100%
Adjustment value Adjustment point
826 mVp-p±40 mV VR3221
Disc
Disc
DVD-S1200
26