Omron NT631C manual 238

Maintenance of the NT631/NT631C Section 7-3

7.Engage backlight connectors at the top and the bottom respectively in place. The backlight cable has a polarity; refer to the figure below.

8.Fit the touch panel cable. Be sure to lock the connector as in step 4 after fitting.

9.Close the rear case, and tighten four screws. Make sure that the internal cable is not trapped.

10.Reconnect the wiring, cables, and Units disconnected in 2, and tighten the screws at a torque of 0.4 N·m.

Turn the power on, and check that the RUN LED is not flashing and that no buzzer is sounding.

If the RUN LED flashes at 1-s intervals and a buzzer sounds intermittently, the touch panel cable is disconnected. Follow the above steps from 1, and check the lock status of the connector.

11.Before starting normal operation, confirm that the following tests can be executed correctly by using the I/O check in the Maintenance menu. Also perform a communications test with the host.

•Touch switch

•Backlight

12.On confirming that all the tests in 11 can be executed normally, start oper- ation.

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