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Part 5. Trouble Shooting
- 52 -
Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
• Confirm that the vertical louver is normally geared with the shaft of Stepping Motor.
• If the regular torque is detected when rotating the vertical louver with hands ⇒ Normal
• Check the connecting condition of CN-U/D or CN0L/R Connector
• Check the soldering condition(on PCB) of CN-U/D or CN0L/R Connector
Check the operating circuit of the vertical louver
• Confirm that there is DC +12V between pin ¿ of CN-U/D, CN0L/R and GND.
• Confirm that there is a soldering short at following terminals.
- Between 1 , 2 , 3 and 4 of MICOM - Between
17
,
18
,
19
and
20
of MICOM
- Between 4 , 5 , 6 and 7 of IC01M - Between 5 , 6 , 7 and 8 of IC01M
6.5 When the louver does not operate.
If there are no problems after above checks.
• Confirm the assembly condition that are catching and interfering parts in the link of the
vertical louver
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