LG AN110B Service Manual page 15

5. Caution for DMD
(Digital Micro-mirror Device)
5-1. Caution for DMD ESD
(1) Use proper grounding to prevent a damage of ESD
(Electrostatic Discharge) when handing the DMD.
(2) Wear a wrist strap to connect ESD grounding protection.
(3) Connect the ESD ground to workstation with an electric
conductor.
(4) Protect the DMD during and after removal from ESD. Store
it with a static free storage device. Use ESD protection
when handling the DMD Assy.
(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. Use Caution cleaning DMD
(1) Follow the procedure and use caution to prevent the
screen from being scratched.
(2) When DMD glass collects dust, clean 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. RGB Gain/Offset Adjustment
6-1. Required Test Equipment
(1) PC Pattern Generator 1EA
(2) Remote control for user 1EA
(3) Remote control for adjustment 1EA
6-2. Sequence for Adjustment
(1) Power on the Set.
(2) Press the Input selection key on the remote control for
user to select the RGB input.
(3) Insert A-PC(D-sub) output Jack to SET.
(4) Set the mode and pattern of Pattern generator as below
- MODE : 1024 x 768, 60Hz (XGA, 60Hz)
- Pattern : 70% SMPTE Color Bar pattern
<Fig.7> SMPTE Color Bar pattern
(5) Automatic adjustment : Press the adjust Key on the
service remote control to select "RGB GAIN/OFF SET".
Press the Enter key to select "AUTO Gain SET" and press
the Enter key.
7. Component Gain/Offset adjustment
7-1. Required Test Equipment
(1) PC Pattern Generator 1EA
(2) Remote control for user 1EA
(3) Remote control for adjustment 1EA
7-2. Sequence for Adjustment
(1) Power on the Set.
(2) Press the Input selection key on the remote control for
user to select the Component input.
(3) Connect component output Jack(component to D-sub-
jack) to the projector.
(4) Set the mode and pattern of Pattern generator as below
- MODE : 1280 x 720, 60Hz (720P, 60Hz)
- Pattern : 70%SMPTE Color Bar pattern
<Fig.8> SMPTE Color Bar pattern
(5) Automatic adjustment : Press the adjust Key on the
service remote control to select "COMPONENT GAIN/OFF
SET". Press the Enter key to select "AUTO Gain SET" and
press the Enter key.
8. EDID Data input
8-1. 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
8-2. Preparation for adjustment & setting
of the device
(1) Connect the equipment as [Fig.9], Turn on PC and JIG
(2) Check communication with S/W(EDID Data Write & Read)
<Fig. 9> Device setting diagram for EDID data input
- 15 -
DLP PJTR SET
(or digital board)
PC
JIG