Haier TDVCF2016, Service Manual

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Color Television Model
：
20S62(TDVCF2016)
4554
(3). GEO
- Receive cross-hatch pattern.
- Select GEO mode.
a. H-CENTER
- Select H.CENTER, adjust that data to obtain proper horizontal centering
b. V-CENTER
- Select V.CENTER, adjust that data to obtain proper vertical centering
c. V-SIZE
- Select V.size, adjust that value to proper vertical size.
- Using MENU button, exit GEO mode.
(4). Focus
- Receive mono-scope pattern.
- Adjust the focus control volume locating on FBT to obtain clear pattern .
(5). WB
- Receive Black and White pattern.
- Select WB mode.
a. High Beam
- Selcet R-DRIVE and B-DRIVE.
- Adjust that value to obtain x=260, y=270 (Y=120)
b. Low beam
- Select R-BIAS,G-BIAS and B-BIAS.
- Adjust that value to obtain x=260, y=270 (Y=15)
c. Repeat a and b till no difference between low and high beam data.
- Using MENU button, exit WB mode.
(6). DP
- Receive mono-scope pattern.
- Select DP mode.
- Adjust Sub-bright data to obtain proper raster.
- Using MENU button, exit DP mode.
(7). AGC
- Receive color bar pattern that RF level is 60dBu.
- Connet Jig at P101.
- Select AGC mode.
- Adjust that value to obtain 3.75V of Jig pin.
- Using MENU button, exit AGC mode.
C. VCO adjustment
If the picture is not steady at 80dB or 90dB, please adjust the VCO voltage.
Method: let the TV receive the Philips color round signal;
Use FLUCK multimeter to measure the DC voltage of the positive of C531;
Adjust the L503 to let the voltage of the C531 become 3.6V.