LG 37LC7D Series, Service Manual

Page: 13 / 60

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6. ADC-Set Adjustment
6-1. Synopsis
ADC-Set adjustment to set the black level and the Gain to
optimum.
6-2. Test Equipment
Service R/C, 801GF(802V, 802F, 802R) or MSPG925FA
Pattern Generator
(480i/1080i The Horizontal 100% Color Bar Pattern adjust to
within 0.7±0.1Vp-p)
[ADC adjustment (MSPG-925Fx series) Model No. & Pattern No.]
- Model No.: #209(480i adjustment), #223(1080i adjustment)
- Pattern No.: #65(7ColorBar Pattern)
6-3. Adjustment
(1) Select Component1 as the input with 100% Horizontal
Color Bar Pattern(HozTV31Bar) in 480i Mode
(2) After receiving signal for at least 1 second, press the ADJ
Key on the Service R/C to enter the ‘Ez - Adjust’ and select
the ‘2. ADC 480i Comp1’.
Pressing the Enter Key to adjust automatically.
(3) When the adjustment is over, 'MST3361 Component
Success’ is displayed. If the adjustment has errors,
'MST3361 Configuration Error’ is displayed.
(4) Select Component1 as the input with 100% Horizontal
Color Bar Pattern(HozTV31Bar) in 1080i Mode.
(5) After receiving signal for at least 1 second, press the ADJ
Key on the Service R/C to enter the ‘Ez - Adjust’ and select
the ‘3. ADC 1080i Comp1/RGB’.
Pressing the Enter Key to adjust automatically.
(6) When the adjustment is over, 'MST3361 Component
Success’ is displayed. If the adjustment has errors,
'MST3361 Configuration Error’ is displayed.
(7) After the Component MST3361 adjustment is over, convert
the RGB-DTV Mode and display Pattern.
When the adjustment is over, 'MST3361 RGB_DTV
Success’ is displayed.
(8) Readjust after confirming the case Pattern or adjustment
condition where the adjustment errors.
(9) After adjustment is complete, exit the adjustment mode by
pressing the ADJ KEY.
<Fig. 2> Adjustment Mode
<Fig. 3> Adjustment Pattern: 480i/1080i 60Hz HozTV30 Bar
Pattern