External Device Recognition Error; Function Error - LG 55LA7400 Service Manual
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Also See for 55LA7400:
- User manual (216 pages) ,
- Owner's manual (72 pages) ,
- Owner's manual (52 pages)
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Standard Repair Process
Error
LCD TV
symptom
Check
input
signal
Check and fix
external device/cable
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
D. Function error
External device recognition error
Check technical
Y
information
Signal
input?
- Fix information
- S/W Version
N
External Input and
N
Technical
Component
information?
Recognition error
Y
RGB,HDMI/
DVI, Optical
Fix in
Recognition error
accordance
with technical
information
- 51/83 -
Established
2012. 11 .30
date
Revised date
Replace Main B/D
Replace Main B/D
11/13
LGE Internal Use Only
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