When The Louver Does Not Operate - LG ATNH09GRLE2 Svc Manual

6.5 When the louver does not operate.

• 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
• 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
- Between
4
• Confirm the assembly condition that are catching and interfering parts in the link of the
vertical louver
Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Check the operating circuit of the vertical louver
, , and of MICOM
2 3 4
, , and of IC01M
5 6 7
If there are no problems after above checks.
- Between , , and
17 18 19
- Between , , and
5 6 7
- 66 -
4. Trouble Shooting
of MICOM
20
of IC01M
8
LGE Internal Use Only