Daewoo DTJ-28A6F, Service Manual, Page: 10 / 54

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4-2. AFT
Standard B/G, D/K,
I
and L
1) Set a Signal Generator with
- RF FREQUENCY = 38.9 MHz,
- RF OUTPUT LEVEL = 80 5dBuV
- Pattern = Color Bar
- System = PAL-B/G
2) Connect the Signal Generator RF Output to TP2 (Tuner IF Output).
There must be no signal input to the tuner.
3) Set the L109 to TP1(I101, #22) with DC Voltage to 2.5V 0.1V
4-3. AGC
1) Set a Pattern Generator with RF LEVEL 60 3dBuV, RF Frequency 210. 25MHz(10CH), Pattern Color Bar.
2) Connect a OSCILLOSCOPE PROBE to P101 (TUNER AGC INPUT).
3) Set the RBOI to P101(Tuner AGC Input) with DC Voltage to 2.8V 0.2V
4-4. SCREEN (G2)
1) Set a Pattern Generator with - RF Frequency : 210.25MHz (10CH)
- Pattern : RETMA
2) Select the “G2” in Menu
3) And a Horizontal Line will appear on the screen.
4) Adjust the SCREEN VOLUME on FBT barely to see the Horizontal Line.
5) Press the PR UP/DOWN keys to finish the SCREEN adjustment.
4-5. FOCUS
1) Apply a RETMA PATTERN signal.
2) Adjust the FOCUS VOLUME on FBT to obtain optimal resolution.
4-6. GEOMETRY
4-6-1 VERTICAL SLOPE ( Fixed : Adjust if need be )
1) Apply a RETMA PATTERN Signal.
2) Set the TV to Normal I mode.
3) Adjust the higher semicircle and the lower semicircle to be the same, with the V.Slope by volume
Up/Down keys.
4-6-2 VERTICAL CENTER
1) Apply a RETMA PATTERN Signal.
2) Set the TV to Normal I mode.
3) Adjust the center of the picture with the V.Center by volume Up/Down keys.
Alignment Instructions
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