LG BX401C, Service Manual

Page: 11 / 39

5. Caution for DMD
(Digital Micro-mirror Device)
5-1. Caution for DMD ESD
(1) Connector the grounding to prevent a damage of ESD
(Electrostatic Discharge) when handing the DMD.
(2) Wear a wrist strap to connect the ESD grounding in flesh
necessarily.
(3) Connect the ESD ground to workstation and an electric
conductor.
(4) Save the DMD after getting rid of a static electricity. Keep
it at an exclusive case when moving it When grounding,
open the case.
(5) Put on gloves for preventing static electricity.
(6) All work is done at static free location. Attach the tape or
remove a dust on the DMD front or DMD back pin
5-2. Caution for DMD Clean
(1) Follow the procedure and caution to prevent the screen
from being scratched.
(2) When DMD glass stains with dust, polish the front and
back DMD glass with soft cloth. Then, do it again after
rotating 180 degree the DMD. If necessary, keep under
observation.
(3) Don’t clean the DMD with the high pressure. The static
electricity and pressure will damage the DMD.
6. EDID Data input
6-1. Required Test Equipment
(1) PC, DDC adjustment Jig(PC serial to D-sub connection
machinery)
(2) DDC record S/W (EDID Data Write & Read)
(3) D-sub terminal, DVI_D
(4) Remote control
6-2. Preparation for Adjustment & Setting
of the device
(1) Set like <Fig. 6-1>, PC and JIG
(2) Press “FRONT-AV” key of the adjustment remote
controller to release EDID Write Protection.
(3) Practice of DDC record S/W(EDID Data Write & Read)
(4) Make sure that the OK signal and the checksum are equal
to the values given at the record file.
(5) When any fail is occurred at the DDC record S/W, because
the EDID Write Protection may not be released, perform
(2) ~ (4) again.
6-3. EDID Data
1) RGB 1/2
2) HDMI : BLOCK 0
3) HDMI : BLOCK 1
- 11 - Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
PC
JIG
DLP PJTR SET
<Fig. 6-1> Device setting diagram for EDID data input
<Fig. 6-2> RGB IN1/2, RGB OUT Port
0 1 2 3 4 5 6 7 8 9 A B C D E F
00 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 01 13 01 03 7E FF 8F 78 08 31 37 A0 5B 51 96 24
20 0F 4C 50 AF CF 00 31 59 45 59 61 59 71 4F 81 40
30 81 59 81 80 61 40 8F 2F 78 D0 51 1A 27 40 58 90
40 34 00 C4 34 21 00 00 1A DE 0D D0 D8 20 90 2E 10
50 24 48 13 00 D0 90 21 00 00 1C 00 00 00 FD 00 32
60 55 1A 5A 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 50 52 4F 4A 45 43 54 4F 52 0A 00 55
0 1 2 3 4 5 6 7 8 9 A B C D E F
00 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 01 13 01 03 80 FF FF 78 0A 31 33 A0 5B 51 96 24
20 0F 4C 50 AF CF 00 31 59 45 59 61 59 71 4F 81 40
30 81 59 81 80 90 40 C3 1E 00 20 41 00 20 30 10 60
40 13 00 00 00 00 00 00 1A 8C 0A D0 8A 20 E0 2D 10
50 10 3E 96 00 D0 90 21 00 00 1C 00 00 00 FD 00 32
60 55 1A 5A 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 50 52 4F 4A 45 43 54 4F 52 0A 01 9C
0 1 2 3 4 5 6 7 8 9 A B C D E F
00 02 03 16 30 4B 22 20 01 03 84 05 10 12 13 14 1F
10 65 03 0C 00 10 00 01 1D 00 72 51 D0 1E 20 6E 28
20 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16 20
30 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 90 20 40
40 31 20 0C 40 55 00 C4 8E 21 00 00 18 01 1D 00 BC
50 52 D0 1E 20 B8 28 55 40 C4 8E 21 00 00 1E 01 1D
60 80 D0 72 1C 16 20 10 2C 25 80 C4 8E 21 00 00 9E
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DA