LG AMNW07GDBL1 Service Manual page 55

Part 5. Trouble Shooting
Display
Title
code
Indoor EEPROM Check
09
Sum Error
Check Point
1. Check the EEPROM Direction
2. If the EEPROM value & the Program value are not matched, the Code is Displayed
3. After Checking the connection and Insertion, replace the PCB or Option PCB
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Cause of error
• Check sum error
<EEPROM Direction Check Point>
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Check point & Normal condition
1. Check the poor soldering
2. Check the insertion condition of the EEPROM
3. Check the PCB Connection
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