Reliant Octel 200 and Octel 300 Message Servers PB6001401 User Manual Page 485

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Hardware
Replacement 9-53
Octel Overture 200/300 Serenade 3.0
PB60014–01
Removing AC Subassemblies from the Octel Overture 300
This
conversion requires the Octel Overture 300 AC-to-DC power supply conversion kit, part number
740-6100-001, which contains the following:
DC power supply unit
DC filter assembly
DC backplane harness
T
o remove the a.c. subassemblies, use the following procedure:
1.
Remove the AC power supply unit, following the instructions in the Removing the Power Supply
section.
2.
Remove the VCU and CPU cards from slots A13 and A14, respectively
.
3.
Remove the AC Power Filter Assembly
, following the instructions in the Removing Power Filter
Assembly from the Octel Overture 300 section.
4.
Remove the a.c. filter
-to-backplane harness by removing the two screws that hold the connector in
the backplane, as shown in Figure 9-24 or Figure 9-25. These screws can be accessed through the
front of the chassis. Remove the nuts and washers that secure the ground wires. Pull the harness out
of the message server
.
Installing DC Subassemblies in the Octel Overture 300
To
install the d.c. subassemblies, use the following procedure:
1.
Install the d.c. filter
-to-backplane harness, as shown in Figure 9-26.
2.
Connect the wires from the backplane harness to the d.c. filter assembly
, as shown in Figure 9-26.
3.
Fasten the d.c. filter assembly to the cabinet, with three screws.
4.
Fasten the top panel to the cabinet, with four screws.
5.
Reinstall the VCU and CPU cards in slots A13 and A14, respectively
.
6.
Install the d.c. power supply unit, following the instructions in the Installing the Power Supply
section.
7.
Locate the message-server label on the base of the cabinet at the rear. Mark the box on the label
indicating d.c. power. Remove the mark from the box indicating a.c. power
.
Field Wiring to DC Power Source
Connect
the Octel Overture 200/300 to a d.c. power source as described in the Installation chapter
,
Installing the Octel Overture 200/300 With a –48-Vdc Power Supply Unit section.
Option Control Chip Replacement
The
Option Control Chip (OCC) is the component that controls the features that are installed on the Octel
Overture 200/300. The OCC assembly is an 8-pin integrated circuit inserted into a socket that is soldered
onto the motherboard, as shown in Figure 9-30 and Figure 9-31.
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