LG MU-42PM12X Service Manual - Page 19

Abnormal Display

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TROUBLE SHOOTING GUIDE 5. Abnormal Display 5-1. No OSD (1) Symptom ¯ LED is green ¯ No OnScreen Display (2) Check follow Check the LVDS No cable? Is the LVDS cable Yes connected well? No Reset cable. Yes Replace cable. Is the VSC Digital No Operates the Thine Yes Board good? IC(IC1100)? No Check Yes IEP(IC500)? No Check Scaler(IC700)? No Yes Replace VSC Digital B/D. Replace Thine Replace Replace Yes IC(IC1100). IEP(IC500). Scaler(IC700). Is the Ctrl Board good? No Replace Ctrl B/D. - 19 -

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TROUBLE SHOOTING GUIDE
5. Abnormal Display
5-1. No OSD
(1) Symptom
fl
LED is green
fl
No OnScreen Display
(2) Check follow
Check the LVDS
cable?
Is the VSC Digital
Board good?
Is the LVDS cable
connected well?
Reset cable.
Yes
No
No
Yes
Operates the Thine
IC(IC1100)?
Replace Thine
IC(IC1100).
No
Is the Ctrl Board
good?
Replace Ctrl B/D.
No
No
Check
IEP(IC500)?
Replace
IEP(IC500).
Yes
No
Check
Scaler(IC700)?
Replace
VSC Digital
B/D.
Replace
Scaler(IC700).
Yes
Yes
No
Replace cable.
Yes