LG 86UH5C Service Manual page 22

Contents of Standard Repair Process
No. Error symptom (High category)
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A. Video error
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B. Power error
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C. Function error
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10 D. Noise
11 E. Exterior error
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
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Only for training and service purposes
Error symptom (Mid category)
No video/Normal audio
No video/No audio
Color error
Vertical/Horizontal bar, residual image,
light spot, external device color error
No power
Off when on, off while viewing, power
auto on/off
Remote control & Local switch checking
External device recognition error
WIFI operating checking
Circuit noise, mechanical noise
Exterior defect
Page Remarks
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LGE Internal Use Only