BFGoodrich PS-823 - Page 41

BFGoodrich Avionics
Systems, Inc.
Component
Maintenance
Manual
P/N
101-1075-()
Corrective
Test Procedure
Normal
Indication
Active
2.16
Cont.
Observe
*
instructions
of
Figure 106 and place S2
OFF
for
a minimum
of 5 seconds,
then
place
it in
the ON
position.
g.
Place switch
S1
and S2
switches OFF.
h. Disconnect
the
Emergency
Power Supply
from
the
test setup, or
proceed
to
2.17.
2.17
Battery
Test Circuit
NOTE: Perform the
following
test for
the
Model
PS-823
(
)/T only.
a.
Connect the Emergency
Power Supply in
the
test
setup
as shown in Figure 106.
b.
Remove
fuse
F2
(10
Amp)
from
the
Emergency
Power Supply.
c.
Remove
the
Emergency
Power
Supply
Cover
Assembly to expose the
Battery
Test
Circuit
Card
Assembly,
P/N
542-1087-01.
See IPL
1
item 85
and
schematic
diagrams (this section).
Temporarily
remove thejumper
between
TP-1
and
TP-2.
d. Temporarily
install a jumperbetween
TP-3
and
TP-
Lamp
DS2
connected to
4. connector pin
11-6
shall
not light.
e.
Disconnect the
positive
terminal of the test
setup
power supply from
Jl-10
and
connect
to
TP2.
f.
Apply 20.0Vdc
to TP2.
g. Slowly increase the voltage applied
at
TP-2
from Lamp
DS2 shall
be off at Adjust R7.
20.0Vdc
to 21.0Vdc.
20.5Vdc and fully on at
21.0Vdc.
h.
Disconnect the positive
terminal of
the
test setup
power supply
from
TP-2
and connect
itto
Jl-10.
i.
Reinstall
the
jumper
removed
in step
c.
between
TP-
1
and
TP-2.
j.
Remove thejumperbetween
TP-3
and
TP-4.
k.
Reinstall fuse F2 (10
Amp) in the
Emergency
Power
Supply.
l.
Apply 28.0Vdc to
11-10
and
Jl-12,
in addition
to
The
voltmeter
indicates
applying 28.0Vde
to the Emergency
Power
Supply.
I15.0Vac +7%,
-10%.
Performance Test
with
Test
Setup
Figure l12 (Cont.)
msmijtp202TestFaultlsodiskl59
24-20-03
Page
121
Revision
A
June
30,
1999