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INSTALLATION INSTRUCTIONS
SECTION 200-255-204
FEBRUARY 1992
5)
6)
7)
8)
9)
10)
Place the expansion cabinet on top of the
basic cabinet, ensuring proper alignment of
the four mounting holes. Secure in place with
four metric bolts, flat washers and lockwash-
ers.
Reinstall the two side covers on the expansion
cabinet and secure in place using four screws
(two per side).
Install the top cover on the expansion cabinet
and secure with four screws.
Connect the intercabinet ground wire in accor-
dance with Figure 4-2.
Route the expansion cabinet ribbon cable
from J402 in the expansion cabinet through
the opening provided in the cabinet bottom
and connect to the basic cabinet backplane at
J401.
Remove three screws from the secondary
power supply. From the front of the expansion
cabinet slide the power supply into the rack
and secure in place with the three rear screws.
NOTE:
Prior to routing intercabinet cabling, check the
15-amp fuse (F2) located at the top of the main
power supply to verify that it is in working
order,
11)
12)
13)
14)
15)
16)
Route the power supply cabling through the
hole in the expansion cabinet and connect
both power supplies at the
Pl, P2
and P3
receptacles.
With the main power supply turned OFF, plug
the AC power cord into the AC outlet.
Momentarily press each secondary power
supply circuit breaker to verify that it is not
tripped.
Place the main power supply power switch in
the ON position.
Verify that all secondary power supply power
indicator LEDs are on. If any of the LEDs are
not on, replace the NPSA-S
(RINGER
LED
should be pulsating rapidly).
Using a multimeter (set to the appropriate
ranges), check the pins on connectors
J701
17)
' 8)
19)
20)
and J702 on the secondary power supply for
the voltages shown in Figure 4-3. (The con-
nectors are on the rear of the power supply
chassis.) Measure between the voltage pin
and a ground pin. (All ground leads are tied to
a single point, so any can be used.) Figure 4-
3 also shows the acceptable range for each
output voltage. If a measured voltage falls
outside of the acceptable range, replace the
secondary power supply.
Turn the power supply
OFF.
Plug in connectors
J701
and J702.
Route cable J703 into the basic cabinet and
plug it into connector J703.
Reinstall the rear panels and doors on both
cabinets and secure in place with screws.
2. PERCEPTION,
2.00 Power Supply Installation
2.01
1)
2)
3)
4)
5)
6)
7)
8)
Install the main power supply as follows:
Remove the two screws securing the basic
cabinet front cover. Lift the cover off the cabi-
net.
Remove and retain six screws securing the
basic cabinet rear cover plate and remove the
rear cover plate (Figure 4-7).
Unpack the main power supply and inspect it
carefully for any visible damage. Verify that all
connectors are securely attached.
Remove and retain the three corner screws
from the back of the main power supply.
Slide the main power supply into the basic
cabinet from the front and secure in place with
three screws at the rear.
Check the two 30-amp fuses (Fl and F2)
located at the top of the power supply to verify
that they are in working order.
Remove plastic cover from AC connection
terminal TBl by removing two screws.
Connect the white and black leads to the AC
terminal (black to
L
and white to N) and the
4-4
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