LG 49UF771V Service Manual page 77

Standard Repair Process
Error
symptom
2. MR15(Magic Remote control) operating error
☞A4
Check the
RF Receiver ver
INSTART menu is "00.00"?
☞A23
Check & Repair
RF assy
connection
☞A4
RF Receiver ver
is "00.00"?
Down load the Firmware
* INSTART MENU14.RF
Remocon Test3. Firmware
download
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Only for training and service purposes
D. Function error
MR15 operating checking
N
Check MR15
itself Operation
Y
N
Close
Y
Normal Y
Press the
operating?
wheel
N
Check & Replace
Battery of MR15
Y
Normal
Close
operating?
N
Replace
MR13
11
Established
date
Revised date
Turn off/on the
N
Is show ok
set and press
message?
the wheel
Y
Close
Is show ok N
message?
Y
Close
* If you conduct the loop at 3times, change the M4.
11/16
Press the back
key about 5sec
LGE Internal Use Only