Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 154

SAM 1 - INITIAL TROUBLESHOOTING PROCEDURE
Assumptions: 1) RESET switch has been pt"essed. 2) ON switch as been pressed.
3) All margins are normal.
0010 N Y
Is the PUSH RESET indicator on?
0020
0030
0040
0050
0060
0070
0080
0090
0100
0110
0120
0130
0140
0150
0160
0170
0180
0190
0200
0210
C-2
N
y Is the CB OFF indicator on?
I I
N Y.
Is the AC TO DC CONVERTER INPUT circuit breaket" (cb) tripped?
Refer to SAM 2.
I
2
A
I I
1
I I -
I
Ny
I I
1
I I
I
2
I
N
I I
Is the AUXILIARY POWER SUPPLY cb tI"ipped?
Disconnect the input to the auxiliary power supply regulator
(unplug the 12-contact connectot" ft"om Jl of the regulator).
Reset cb and attempt power on (reset and on).
Y Does the AUXILIARY POWER SUPPLY cb tI"ip?
I -
1 The problem is in the cit"cuit breaker or wiI"ing, it will be
necessat"y to troubleshoot using diagrams and voltmetet". Be
cautious when working in this area.
1
2
3
4
N y
I I
1
I I -
1
N y
I I
1
I I
I
2
N y
I I
1
I I -
I I I
2 2 2
B C D
Turn power off (pt"ess OFF switch).
Reconnect Jl of the auxiliary power supply.
Disconnect the output from the auxiliary power supply regulator
(unplug the 6-contact connectot" from J2 of the regulator).
Attempt power on (reset and on).
Does the auxiliary power supply cb tI"ip?
Replace the auxiliary I"egulator.
The problem is in the backpanel OI" load, it will be necessary
to troubleshoot using diagrams and voltmeter. Be cautious when
working in this area.
Is the BLOWER/CHARGER POWER CB tI"ipped?
Disconnect P3, P6, and P7 fI"om blowers and unplug the 3-contact
connectot" from J4 of the battery charger contt"ol box.
Reset cb and attempt powet" on (reset and on).
Does the BLOWER/CHARGER CB trip?
The problem is in the circuit breaker or wiring, it is
necessary to troubleshoot with diagrams and voltmetet". Be
cautious when working in this area.
60469500 A