LG OLED77C3 Series User Manual

D. Function error
Established
date
Revised date
Error
symptom
Remote control & Local switch checking
Y
N
1. Remote control(R/C) operating error
Check R/C itself
Operation
Normal
operating?
Normal
operating?
Y
Close
Replace R/C
If R/C operate,
Explain the customer
cause is interference
from light in room.
Check R/C Operating
When turn off light
in room
Check & Replace
Baterry of R/C
Check & Repair
Cable connection
Connector solder
Normal
operating?
Check B+3.5V
On Main B/D
☞A13
Normal
Voltage?
N
N
Check 7.8v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
☞A9
Check IR
Output signal
Normal
Signal?
N
Y
Repair/Replace
IR B/D
N
☞13
Replace
Main B/D
Y
☞A13
Standard Repair Process
11
Y
Close
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LG OLED77C3 Series Specifications

General

Screen Size	77 inches
Display Technology	OLED
HDR	Dolby Vision, HDR10, HLG
Smart TV Platform	webOS
HDMI Ports	4
Audio Output	40W
Voice Assistant	Google Assistant, Amazon Alexa
Refresh Rate	120 Hz
Processor	α9 Gen6 AI Processor 4K
VRR	Yes
USB Ports	3
Resolution	3840 x 2160
Bluetooth	Yes
Wi-Fi	Yes