Final Checkout - Data General NOVA 4/S Manual

, (FRONT VIEW)
TEST PLUG J1
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DG-06067
Final Checkout 3. Turn the power off and see if the fans stop.
1. Turn power on. a. If the fans stop:
e Go to step 5, "Battery Backup Checkout" if
2. Check the power on light on the front console. the system has battery backup.
voltage at J35-11 (see Figure 6.7).
ANT EDD ik UNLOCK position. If the fans still do not
e If ONLED-P is 3V or GREATER, replace L a . Sp See
the power supply board; otherwise, replace stop. ones tne rw FAIL voltage at test
the console PCB assembly. plug J 1 - 3 (see Figure 6.8).
e If PWR FAIL is NOT less than 0.4V,
e If the light still is not on, replace the fan replace the fan module.
module, and if this does not correct the
problem, replace the internal cable (wiring e If PWR FAIL is less than 0.4V, check PON
harness). at test plug J1-11 (see Figure 6.8). If PON is
less than 0.4V, replace the VNR _ unit;
otherwise, replace the power supply board.
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