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 SB 740-91-01
Step
Setting and Instructions
Normal Indication
A
(con't)
(14) Set SCA display to maximum.
Switch PANEL switch on.
(15) Press and release SCA DF/8 key.
a) SCA display reads.
*Note: if GA displays have timed
out, press recall button.
(16) Vary PS1 voltage between 35v + 0.5v-
VOLTAGE
12V + 0.5V. Check voltage to current
a)
35 1.09 Max
relationship at 35v. 30v, 25v, 20v,
b)
30 0.9 Max
15v and 12v. All voltages + 0.5v.
c)
25 0.78 Max
d)
20 0.62 Max
e)
15 0.46 Max
f)
12 0.37 Max
(17) Switch SCA PANEL switch off.
(18) Turn all supplies off
Remove ammeters from test setup.
Connect shorting links between terminals
1 and 2 for each GA on GDU case.
Switch PS1 on and set for 35v + 2v.
Switch POWER switch on. Leave for 1
minute.
Switch POWER switch off. Remove shorting
links.
Switch POWER switch on and repeat step 1
Same as in Step 1.
Switch, -OWER switch off.
Switch-PS1 off.
(19) At each GA, reverse wires to terminals I
and 2.
Switch PS1 on and set for 35v + 1v.
Switch POWER switch on, leave for 1
minute.
Switch POWER switch off, reconnect wires
to correct terminals on each GA.
Switch POWER on and repeat step 1.
Same as in Step 1.
Switch POWER off.
Switch PS1 off.
(20) Reverse PS1 connections to AUX-POWER
terminals at GDU case.
Switch PS1 on set for 35v + 1v.
Switch POWER switch on, leave for 1
minute.
Change 1 B-130.20
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