Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 155

A B C D
1 l 1 1
0220
1
Reconnect blower cables J3, J6, and J7 one at a time, if the cb
trips replace the appropriate blower.
0230
0240
0250
2
N
y
1
Reconnect the charger cable. If the cb trips, replace the
battery control box.
Is the battery disconnect tripped?
Replace the battery control box.
' '
0260 ' ' 1
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.
0270 N Y
0280
1
Is the 50/60 HZ CONTROL POWER cb tripped?
Reset the cb (press).
0290 2 Try turning on the system again.
0300 N Y Did the cb remain set?
0310
1
Monitor operation to see if the problem recurs.
'
-
Disconnect any external device connected to 3J2 and retry. 0320
0330
1
2
'
-
If cb trips, check the auxiliary bulk power supply using diagrams
and voltmeter.
0340 N Y
0350
1
Is the 50/60 HZ DISCONNECT tripped?
Reset the 50/60 HZ DISCONNECT.
0360 N Y Did the disconnect remain set?
0370
1
Try turning on the system again.
0380
1
Open the AC TO DC CONVERTER INPUT breaker (CB2).
0390 2 Reset the 50/60 HZ cb and try turning on the system again.
0400
N Y
0410
I I
i
0420 2
3 3 3
A B C
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A
Did the 50/60 HZ disconnect remain set?
Power down.
Remove the ac to de converter from circuit by unplugging the
3-contact connector from Jl of the ac to de converter.
C-3