LG OLED77C3 Series User Manual

Contents of Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
1 A. Video error_ No video/Normal audio Check Vx1 lock A1
2
A. Video error_ video error /Video
lag/stop
TUNER input signal strength checking
method
A3
3 Version checking method A4
4 Tuner Checking Part A5
5
A. Video error _Vertical/Horizontal bar,
residual image, light spot
Connection diagram A6
6 A. Video error_ Color error
Check Link Cable (Vx1/EPI) reconnection
condition
A7
7
<Appendix>
Defected Type caused by T-Con/
Inverter/ Module
Check Cable (1) ~ (2)
A-1/11
A-2/11
Exchange Main Board (1) ~ (3) A-3/11 ~ A-5/11
Exchange Module (1) ~ (3) A-6/11 ~ A-8/11
Exchange T-Con (1) ~ (2) A-9/11 ~ A-10/11
Exchange Power Board(PSU) A-11/11
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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