LG LCN240CP - Manual (Page 37)

Service Manual 37
Troubleshooting Guide
• 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 Connector
• Check the soldering condition(on PWB) of CN-U/D Connector
If there are no problems after above checks
• Confirm the assembly conditions that are catching and interfering parts
in the rotation radial of the Vertical Louver
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin (RED) of CN-U/D and
GND.
When Vertical Louver does not operate Trouble 5