Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 59

LOGIC POWER SUPPLY CONTROLS
The two CPU 1 power supplies are optional. Therefore, no controls are in
these locations if the option is not present (refer to figure 4-7). If not
present, a jumper connector is installed to bypass the optional controls.
Figure 4-9 and table 4-4 illustrate and define the controls and indicators on
the logic power supplies.
TABLE 4-4. LOGIC POWER SUPPLY CONTROLS
(SHEET 1 of 2)
I I
___
P_a~n~e~l;;......;;H~a=r=k~i=n~g.____..l--.D~e~s~cr--=ip~t~i~o~n"'-',__-----------F~u=n=c~t~i~o~n------------~I
I I
NORMAL/DISABLE
I
Toggle In the NORMAL position, de power I
I switch is available at the output of the I
I
related power supply. In the
I
I
DISABLE position, de power is I
I
removed from the output of the
I
I related power supply, but the I
J
internal POWER GOOD signal is I
I
still generated. When all power I
I
supplies are in the DISABLE mode,
I
I
the system POWER GOOD signal is I
I disabled by the logic. I
I I
MARGIN
I
Toggle Allows ±5% margin shift of the I
I
switch logic power supply output I
I
voltages. The MARGIN function I
I
can also be performed via the I
I
terminal keyboard.
I
I I
+ MARGIN
I
Indicator Indicates a +5% margin shift.
I
I I
- MARGIN
I
Indicator Indicates a -5% margin shift.
I
I I
0% ADJUST
I Potentio- Allows adjustment of the power I
I
meter supply output-voltage. Refer to
I
I
Test Points under Voltmeter.
I
I I
HIGH V INPUT
I
Indicator Indicates: I
I That voltage is present at the I
l
input of the related power supply. I
\ That control/protection signals
I
I are present at the control I
I
connector of the related power I
I
supply.
I
--~~~~~~~___,_~~~~~~---~~~~~~~~~~~~~~~'
60469500 A
4-25