Simplex 4100 Series Installation Instructions Manual page 13

Installing Motherboards into 2975-91xx Back Boxes (4100)
Overview
The NIC card can be mounted to either 2975-91xx Master Controller Bays (4100) or, for the
4100U, 2975-94xx CPU Bays. This section describes mounting into 4100 Master Controller Bays.
Installing into a
Use the following guidelines and instruction when installing into a master controller bay.
2975-91xx Master
•
Controller Bay
•
•
•
Install the motherboard as described below.
1.
2.
3.
P1
If the 575-274 Master Motherboard is used, it must be installed in the leftmost position of
this bay. If the 575-274 Master Motherboard is not used, the CPU motherboard must be
installed in the leftmost position of the bay.
The power supply must be installed in the rightmost position of the bay.
Relay cards must be installed in the slots immediately to the left of the power supply.
This is necessary to allow for the proper routing of non-power limited wiring (120 VAC
wiring connected to the relay card).
If used, the Class B motherboard (575-275) must be installed to the left of the relay cards.
If a physical bridge is used with the Class B motherboard, it must be to the right of any
motherboards using NICs. This allows for earth ground detection via the physical bridge.
Orient the motherboard.
•
575-274 Master Motherboard: if it is not already installed, orient with the connector
labeled J3 on the right and the header labeled P1 on the left.
•
575-275 Class B Motherboard: orient with the connector labeled J1 on the right and
the header labeled P1 on the left.
575-275 Class B Motherboard only: Slide the motherboard to the left until the pins are
completely inserted in the connector of a previously installed motherboard.
Secure the motherboard to the chassis with four torx screws.
CPU or 575-274
Motherboard
J1
Figure 7. Installing the Motherboard into a 4100 Master Controller Bay
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The 575-275 Motherboard can be installed in
any of these slots if it uses a NIC. If the bay has
relay cards, they must be installed to the
immediate left of power supply.
13
Power
Supply