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 SB 740-91-01
Step
Setting and Instructions
Normal Indication
A
(con't)
(3) Set POWER switch off.
(4) Reset PS1 voltage to 25v + 1v.
(5) Connect PS2, set to 30v + 0.5v
to battery connector on UUT. Set
POWER switch on.' Measure battery
supply current.
a)
Less than 20mA.
(6) While monitoring battery current,
reduce PSI voltage. Current in
Step 5 should not increase until
PS1 voltage is less than 12.5
volts.
(7) Reduce PS1 voltage to zero.
A
5.25 + 0.5v
Recheck measurement step la and lb.
b)
GDU power lamp on.
(8) Reduce battery PS2 voltage until
a)
Less 100mA.
current is less than 100mA. Supply
b)
20v + 0.5v.
voltage should be 20v + 0.5v.
(9) Set POWER-switch off. Disconnect
PS1 from battery connector.
(10) Connect GDU, SCA, and the GAs wires,
as shown in figure 1, from Term 3
to each GA. But do not connect.
(11) Set PS1 voltage to 35v + 0.5v. Set
GDU power switch on.
(12) On SCA. "press 2" key.
a)
SCA displays GUNO1EOM
Press READY key.
b)
SCA displays "PHASE B"
Press and hold SELF TEST key
c)
SCA sequentially dis-
until "PHASE B" is displayed;
plays the following:
then release key.
DF0000 - DF9999 then
to DF 12345 (then thru
QE sequence).
(13) After SCA display reaches DF12345 it
will cycle thru QE numbers. When
OF 8888 is displayed, press and
release SELF TEST key.
a) SCA display KEY NOW.
Change 1 B.130.19
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