Adjustment Instruction - LG du-37lz30 Service Manual

1. Scope of Application
These specifications are applied to all LCD TV models employing an AL-03HA
chassis.
2. Instruction
(1) Since this chassis is insulated from the power supply, it is not mandatory to
use an insulated-core transformer. But for the protection of adjustment
devices, it is recommended to power up the chassis between the power line
and the chassis input stage.
(2) Adjustment should be performed exactly in accordance with the instructed
sequence.
(3) Unless otherwise specified, adjustment should be done at an ambient
temperature 25°±5°C and relative humidity of 65%±10%.
(4) During adjustment, the power supply to the TV set should be maintained at
220V and 60Hz.
(5) Unless otherwise specified, heat-run the set by leaving it powered up for
about 15 minutes before adjustment.
● During preliminary heat-run, the 100% White Pattern (CH 06) should be
displayed (or '3. White Pattern' of Ez-Adjust).
● How to Get White Pattern
① Push ADJ KEY on the adjustment remote controller and enter Ez-Adjust.
② Select '3. White Pattern' with CH +/- KEY and push CONFIRM (■) KEY.
Then the 100% Full White Pattern will appear.
* In this mode, you can heat run the set without a separate signal generator.
(Caution) If a static display is turned on for more than 20 minutes,
particularly the in-house digital pattern (CH 13) or the cross hatch pattern
(CH 09), care should be taken as an after-image may develop on the black
level part of the screen.
3. Adjustment
(1) Download EDID (Extended Display Identification Data) and DDC (Display
Data Channel).
(2) Adjust AD9883A-Set.
(3) Adjust color temperature (white balance).
(4) Adjust main and sub color.
4. Adjustment
4.1. Download EDID (Extended Display Identification
Data) and DDC (Display Data Channel)
(1) Established by VESA, EDID is a function created to implement "Plug and
Play" that sets and makes available user environments by allowing the PC
and the monitor to automatically communicate and exchange data with
other without requiring the user to directly give commands to either the PC
or the monitor.
(2) EDID data for DVI of AL-03HA
EDID table =
00 01 02 03 04 05
00 00 FF FF FF FF FF FF 00 1E 6D 01
10 03 0E 01 03 98 52
20 10 48 4B AF CE 00
30 01 01 01 01 01 40
40 13 00 34 CC 31 00
50 4C 43 44 20 20 20
60 55 1E 3E 08 00 0A 20
70 00 44 55 2D 33 37

ADJUSTMENT INSTRUCTION

06 07 08 09 0A 0B 0C 0D 0E 0F
01 01 01
2E 96 08 E8 AA A1 57 49
31 4A 31 59 3B D9 45 59
C3 1E 00 20 41 00 20 30
00 1E 00 00 00 FC 00 4C 47
20 20 20 0A 00 00 00 FD 00
20 20 20 20 20 00 00
4C 5A 33 30 20 20 20 20
(3) EDID data for RGB of AL-03HA
EDID table =
00 01 02 03
00 00 FF FF FF FF FF FF 00 1E 6D 01
10 03 0E 01 03
20 10 48 4B AF CE 00
30 01 01 01 01
40 13 00 34 CC 31
50 4C 43 44 20
60 55 1E 3E 08
70 00 44 55 2D 33
4-2. Adjust AD9883A-Set
4.2.1 Overview
AD9883A-Set adjustment is a function to automatically set the optimum
black level and gain in the analog-to-digital converter and compensate for
RGB deviation.
4.2.2 Devices Used
Adjustment remote controller and 801GF (802B, 802F, 802R) pattern
generator.
The latter should be capable of outputting the 720P vertical 100% color bar
pattern as shown below and its output level should be calibrated at 0.7±
0.1Vp-p.
Be careful not to confuse the said pattern with the 75% color bar in the
neighborhood.
<Fig. 2> Adjustment pattern: 720P vertical color bar
4.2.3 Method of Adjustment
1) Input the 720P mode 100% vertical color bar pattern (TVBA-100) that can
be supported at a component input terminal, select Component 1 or
Component 2 for input, and select an appropriate display.
2) Wait one second or longer after signal reception, get into 'Ez-Adjust' by
pushing ADJ KEY on the adjustment remote controller, select 1.AD9883-
Set, and push +KEY.
Adjustment will be carried out automatically.
3) When adjustment is completed normally, the message 'AD9883－Set'
will be displayed. Otherwise, 'AD9883A Setup Error' will appear instead.
4) If adjustment is not completed normally, repeat after checking the pattern
or adjustment conditions.
5) When adjustment is completed, escape adjustment mode by pushing the
ADJ KEY.
01 01
9C 25
61 4F
10 60
20
38
00 FC
00 2D
- 9 -
04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
01 01 01
18 52 2E 96 08 E8 AA A1 57 49
31 4A 31 59 3B D9 45 59
01 40 C3 1E 00 20 41 00 20 30
00 00 1E 00 00 00 FC 00 4C 47
20 20 20 20 20 0A 00 00 00 FD 00
00 0A 20 20 20 20 20 20 00 00
37 4C 5A 33 30 20 20 20 20
01 01
9C 25
61 4F
10 60
20
38
00 FC
00 AD