363-205-401 Power Up:
Issue 7, March 1997 Page 1 of 10
DLP-507
Perform Battery Charger Test
SUMMARY:
Unseat all
BATTERY CHARGER
s. Reseat a
BATTERY CHARGER
.
Verify that
BAT DISCHG
indicator goes off and remains off,
HIGH RATE CHG/ON
indicator lights, and
OPEN BAT
indicator is off. Unseat
BATTERY CHARGER
and
repeat for additional
BATTERY CHARGER
s. Reseat all
BATTERY CHARGER
s.
Remove AC power from system. Measure −42 to −56 V DC at
LDU
(−
48L/GND
).
Restore AC power. Remove either
+BAT
or −
BAT
fuse on battery shelf. Verify that
OPEN BAT
indicator lights and
HIGH RATE CHG/ON
indicator is off. Replace
+BAT
or −
BAT
fuse. Verify that
OPEN BAT
indicator goes off. Repeat for other battery
strings. Press
HIGH RATE CHG/ACTIVATE
button on
BATTERY CHARGER
and
verify that
BAT DISCHG
indicator goes off and
HIGH RATE CHG/ON
indicator lights.
Repeat for other
BATTERY CHARGER
s. Verify that
HIGH RATE CHG/ON
indicator(s) goes off within 24 hours.
1.
NOTE:
Throughout this procedure the
BAT DISCHG
and the
HIGH RATE
CHG/ON
indicators on
BATTERY CHARGER
will light at steps indicated.
The amount of time these indicators are lighted is a function of charge
state of batteries. However, these indicators should at least light
momentarily at appropriate steps.
Verify that all
336A RECTIFIER
s are seated and all
BATTERY CHARGER
s
are unseated. Reseat one of the
BATTERY CHARGER
s while observing indi-
cators on
BATTERY CHARGER
faceplate.
Response:
BAT DISCHG
indicator will light and remain lighted for a
period of time determined by charge state of batteries.
If
BAT DISCHG
indicator remains lighted for more than 4
minutes,
BCU PMN
(or
P/M
) and
ADU NE
indicators will also
light.
When
BAT DISCHG
indicator goes off, the
HIGH RATE
CHG/ON
indicator will light and, if
BCU PMN
(or
P/M
) and
ADU NE
indicators are lighted, they will go off after 4 min-
utes.
The
HIGH RATE CHG/ON
indicator will go off after a period
of time determined by charge state of batteries.
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