LG 42PX3DLV, Service Manual

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ADJUSTMENT INSTRUCTIONS
7. AD9883A-Set Adjustment
7-1. Synopsis
AD9883A-Set adjustment to set the black level and the Gain
of optimum with an automatic movement from the analog =>
digital converter.
7-2. Test Equipment
Service R/C, 801GF(802B, 802F, 802R) Pattern Generator
(720P The Vertical 100% Color Bar Pattern output will be
possible and the output level will accurately have to be
adjusted to 0.7±0.1Vp-p)
7-3. Adjustment
(1) Select Component1 or Component2 as the input with
100% Vertical Color Bar Pattern(TVBAR_100) in 720P
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 ‘1. AD9883A-Set’.
Pressing the + Key to adjust with automatic movement.
(3) When the adjustment is over, 'Complete Auto
Configuration’ is displayed. If the adjustment has errors,
'AD9883A Configuration Error’ is displayed.
(4) Readjust after confirming the case Pattern or adjustment
condition where the adjustment had errors.
(5) After adjustment is complete, exit the adjustment mode by
pressing the ADJ KEY.
8. Adjustment of White Balance
8-1. Required Equipment
(1) Color analyzer (CA-100 or similar product)
(2) Automatic adjustor (with automatic adjustment hour
necessity and the RS-232C communication being possible)
(3) AV Pattern Generator
8-2. Connection Diagram of Equipment
for Measuring
(Automatic Adjustment)
[ [
RS-232C Command
(Automatic Adjustment)
<Fig. 3> Adjustment Pattern : 720P Vertical Color Bar
High Light Adjustment
COLOR
ANALYZER
TYPE; CA-100
CVBS Signal Input
PDP MONITOR
Window
RS-232C
MSPG-2100 or
MSTG-5200
Low Light Adjustment
<Fig. 4> Connection Diagram of Automatic Adjustment
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
00
00
00
00
00
00
ff
ff
ff
7f
7f
7f
ja 00 XX
jb 00 XX
jc 00 XX
lj 00 XX
lk 00 XX
ll 00 XX
7f
7f
7f(fix.)
3f(fix.)
3f
3f
RS-232C Command
[CMD ID DATA]
MIN
CENTER
(DEFAULT) MAX