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I have a 4009 NAC extender. The trouble notification is on on the main panel with the description ''NAC panel open ckt'' Inside the 4009 the led's indicate an open circuit trouble and the 4th led (the ones in a straight line) is flashing. This apparently indicates a trouble with NAC 4, but I don't know exactly what that is. What causes an open circuit trouble in the system. It seems that we saw this same indication a few years ago and Simplex service installed new back-up batteries. I see that there is a different led indication for low/dead batteries but is this open circuit trouble related? Please advise

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6ya6ya
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ctf1800
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more like a driver is corrupt or better yet have the on board nic card set to turn on, is there a plug that has wire attached to the nic card, unplug those and see what happens.

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sri2008
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SOURCE: computer was working earlier, turned off unit - later tried to turn it on but it won't work

first if u have an ups disconnect the system from that and test the system directly from mains,

If not u disconnect the powerswitch  from the m/b and direct short the pins in m/b.

2. even it is not working u check the system with another SMPS

Was this helpful to u pl give the rating

Thanks

Posted on Feb 22, 2008

SOURCE: battery charge indicator seems faulty.

Solved own problem. Bad conection between pcb and battery contact pins. Reheat each battery pin on the pcb carefully until solder reflow occurs then remove heat. PDA now repaired

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SOURCE: Not charging

Try to turn on the Keyboard.
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For more information download the User Manual at Logitech Site


Posted on Nov 06, 2008

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SOURCE: LED Indicator Problems & Flasher Relay?

Modern Ducatis (and cars) don't have a conventional flasher. The blink rate is controlled by the dash cpu. The blink rate change is used to indicate that a bulb is out (by sensing low resistance). Using a resistor will fool the cpu into blinking correctly.

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