LG 55QNED85SQA Service Manual page 36

Standard Repair Process
Established
D. Function error
Error
date
symptom
Magic Remote control operating checking Revised date 12/17
2. Magic Remote control operating error
☞A4
Turn off/on the
N
N
Check the RF Receiver Check MR22 Normal Y Press the Is show ok
set and press
ver is "00.00"?
operating?
itself Operation message?
INSTART menu wheel
the wheel
N
Y
Y
☞A15
Check & Replace
Close
Check & Repair
Battery of MR22
RF assy
connection
Y
Normal
☞A4
Close
operating?
Is show ok Press the back
N
message?
key about 5sec
N
RF Receiver ver
N
Close
is "00.00"?
Y
Replace
MR22
Y
Close
Down load the Firmware
* If you conduct the loop at 3times, change the MR22.
* INSTART MENU
 14.RF Remote control Test
 3. Firmware download