Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 156

0430
0440
0450
0460
A B C
2 2 2
I I I
3 Reset the AC TO DC CONVERTER INPUT cb.
4 Attempt to power up.
Y N Did the 50/60 HZ DISCONNECT trip?
1 Replace the ac to de converter.
1 Check the wiring on the AC TO DC CONVERTER INPUT cb.
2 Replace the AC TO DC CONVERTER INPUT cb.
0470.
0480
0490
I
3 Reconnect the 3-contact connector to Jl of the ac to de converter.
I -
0500 1 Check transformer taps for proper configuration.
0510
I
2 Check transformers Tl, T2, and T3 for burned wires or other
I -
indications of failure.
0520 1 Check the input power to the unit.
0530 2 At this point it is necessary to troubleshoot the power control
system using diagrams and voltmeter. Be cautious when working in
areas that may contain dangerous voltage and current levels.
C-4
60469500 A