LG 55UB820T Service Manual page 63

Standard Repair Process
D. Function error Established
2013.01.31
Error
date
LCD TV
symptom
MR operating checking
Revised date 11/16
2. MR(Magic Remocon) operating error
☞A4
N
Check the
RF Receiver ver Check MR itself Normal Y
Turn off/on the
N
Press the Is show ok
INSTART menu
is "00.00"?
operating?
Operation
set and press
message?
wheel
the wheel
N
Y
Y
☞A23
Check & Replace
Close
Check & Repair
Battery of MR
RF assy
connection
Y
Normal
☞A4
Close
operating?
Is show ok
N Press the back
message?
N key about 5sec
RF Receiver ver
N
Close
is "00.00"?
Y
Replace MR
Close
Y
Down load the Firmware
* If you conduct the loop at 3times, change the M4.
* INSTART MENU14.RF
Remocon Test3. Firmware
download
11