LG PW800G, Service Manual, Page: 8 / 29

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Only for training and service purposes
4.5.3. Verification of DMD light source
(1) Finish after verifying if the light source in the right side of
DMD screen in Gray Pattern – Full Gray 10 Pattern inside
DMD Check Pattern can be seen with naked eyes. (Refer
to Fig. 4-5-3-1)
( DMD Light Source Spec: It is not seen with naked eyes in
Full Gray 10 Pattern.)
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.
* Attachment )TI Reference :
DMD Handling Specification, DMD Cleaning
6. Country, Wi-Fi Country
Adjustment
6.1. Country Group, Country Adjustment
(1) Enter to the adjustment mode by selecting “IN-START”.
(2) Press the right arrow key in “Adjust check” to locate a
cursor on “Country Group Code”.
(3) In case of PW800-NA, change “Country Group Code” to
“02” and press the down arrow key once to change
"Country" and then press OK.
In case of PW800G-GL, change “Country Group Code” to
“21” and press the down arrow key once to change
"Country" and then press OK.
In case of PW800-EU, change “Country Group Code” to “4”
and press the down arrow key once to change
"Country" and then press OK.
In case of PW800-MA, change “Country Group Code” to
AJ - “19”, JA - "20" and press the down arrow key once to
change "Country" and then press OK.
In case of PW800-CB, change “Country Group Code” to
“10” and press the down arrow key once to change
"Country" and then press OK.
(4) Press Exit to complete the adjustment.
(Fig. 4-5-3-1) Verification of DMD light source
Model Suffix Country
Code
Country
Group
Country
PW800-NA AUS 02 US -
ACC CC -
AWM WM -
PW800G-GL AEU
AEK
21 EU -
AKR KR -
AUS
ACC
AWM
US -
ACN CN -
Other GB -
PW800-EU AEU
AEK
ARU
APD
04 EU -
PW800-MA ATI
AAU
19 AJ -
AFB
AMF
AMA
AMR
20 JA
PW800-CB AWC 10 TW CO