LG 55UM7450PVA Service Manual page 41

Standard Repair Process
Error
symptom
2. MR19(Magic Remocon) operating error
☞A4
Check the
RF Receiver ver
INSTART menu is "00.00"?
☞A24
Check & Repair
RF assy
connection
☞A4
RF Receiver ver
is "00.00"?
Change the RF Receiver assy
D. Function error
MR19 operating checking
N Check MR19
itself Operation
Y
N
Close
Y
Normal Y
Press the
operating?
wheel
N
Check & Replace
Battery of MR19
Y
Normal
Close
operating?
N
Replace
MR19
12
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.
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Only for training and service purposes
Press the back
key about 5sec