LG PB60G Service Manual page 8

4.4.3. 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. 4-4-4)
( DMD Light Source Spec: It is not seen with naked eyes in
Full Gray 10 Pattern.)
(Fig. 4-4-4) Verification of DMD light source
5. Caution for DMD
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
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
(Digital Micro-mirror Device)
6. Country Adjustment and Verification
6.1. Country Adjustment Method
(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 PB60G-JE, change "Country Group Code"
to "17" and press the down arrow key once to change
"Country" and then press OK. (PB60G_ EBT62193502,
EBT62193505, EBT62193506, EBT62193507,
EBT62193508)
Main chassis
assy P/N
EBT62193502
EBT62193506
EBT62193507
EBT62193508
EBT62193505
(4) Press Exit to complete the adjustment.
( In case of EBT62193501, change "Country Group Code"
only, then press OK.)
( In case of EBT62193502, EBT62193503, EBT62193505,
EBT62193506, EBT62193507, EBT62193508,
EBT62193509, EBT62193510, Change both "Country Group
Code" and "Country," then press OK.
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Suffix Country
AEU,AEK EU
AKR KR
AUS,ACC,AWM US
ACN CN
Others GB
LGE Internal Use Only