LG FMN0760NL Service Manual page 86

Free joint multi type
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When the vertical louver does not operate.
Trouble 5
• 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 PCB) of CN-U/D Connector
• Confirm that there is DC +12V between pin
• Confirm that there is a soldering short at following terminals.
- Between
,
17
18
- Between
,
5
6
- Between
,
11
12
• Confirm the assembly condition that are catching and interfering parts in the link of the
vertical louver
Check the operating circuit of the vertical louver
,
and
of MICOM
19
20
,
and
of IC01M
7
8
,
and
of IC01M
13
14
If there are no problems after above checks.
of CN-U/D and GND.
1
-86-

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