Service Manual 57
Troubleshooting Guide
When Left/Right Louvers do not operate.
• Confirm that the Left/Right Vertical Louver is normally geared with the
shaft of Stepping Motor.
• If the regular torque is detected when rotating the Left/Right Vertical
Louver with hands ⇒ Normal
• Check the connecting condition of CN-U/D, CN-L/R Connector
• Check the soldering condition(on PWB) of CN-U/D, CN-L/R Connector
Check the operating circuit of the Vertical Louver
• Confirm that there is DC
+
12V between pin① of CN-U/D, CN-L/R and
GND.
• Confirm that there is a soldering short at following terminals.
- Between 10 , 11 , 12 and 13 of ICØ1M
- Between
13 , 14 , 15 and 18 of ICØ2M
- Between
54 ~ 60 and 61 of MICOM
- Between 1 , 2 , 3 , 4 and 5 of CN-U/D, CN-L/R
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
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