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Service Manual
Troubleshooting Guide
When 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 connection condition of CN-UP/DOWN Connector
• Check the soldering condition(on PCB) of CN-UP/DOWN Connector
Check the operating circuit of the Vertical Louver
• Confirm that there is DC
+
12V between pin (RED) of CN-UP/DOWN and
GND.
• Confirm that there is a soldering short at following terminals.
- Between 60 , 61 , 62 and 63 of MICOM
- Between
2 , 3 , 4 and 5 of IC01M
- Between 12 , 13 ,
14 , 15
of IC01M
- Between
1 , 2 , 3 , 4 and 5 of CN-UP/DOWN
If there are no problems after above checks
• Confirm if the assembly parts are catching and interfering in the rotation of
the Vertical Louver