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LG 19LS4D-ZB Service Manual page 18

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5. In case of strange screen display in specific modes
5-1. In case of no OSD display
(1) Symptom
1) LED is green.
2) The minute discharge is continuously accomplished from the module.
(2) Procedure check
Is the LVDS cable
normal ?
Yes
Is the VSC Board
normal?
Yes
Is the Ctrl Board of
Module normal?
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Is the LVDS cable
connected?
No
No
Re-insert the Cable.
No
Does the FIL8548
IC(IC700) operate?
No
Replace the FIL8548
IC(IC700)
No
Replace the Ctrl B/D.
Replace the cable.
Yes
Yes
Replace the VSC B/D
- 18 -
LGE Internal Use Only

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