Juniper G10 CMTS Getting Started page 30

Installing a Front-Loaded Module
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• Table 1: Power Supply Guideline
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18 Juniper Networks G10 CMTS Getting Started
As DOCSIS Modules are installed in your CMTS, ensure the correct number of power supplies
are installed to support your configuration. The Juniper Networks production guideline for the
number of power supplies to install for N+1 power supply redundancy is provided in Table 1.
To implement full power redundancy (power supplies, power transition modules, and input
power), the number of power supplies installed in domain A must also be installed in
domain B.
Number of Number of
DOCSIS Modules Power Supplies
1 3
2 4
3 5
4 6
5 7
6 8
7 9
8 10
1. If an air management panel is installed in the slot to be populated, remove it from the
card cage.
2. Unlock the ejectors of the module to be installed so that each ejector rests at
approximately 45° away from its locked position.
3. Align the printed circuit board of the module with the card guides and slowly slide the
module into the slot until it comes to a stop with the inside tabs (tabs closest to
midplane) of the upper and lower ejectors resting directly under and over, respectively,
the module ejector rail (refer to Figure 9 on page 19).
4. Simultaneously close the ejectors toward the module faceplate to the vertical position
until each ejector release clicks into position.
5. Tighten the two retainer screws by applying 3 in lb of torque to each screw.
6. If you have installed a NIC Module and you will be using a GBIC module interface other
than Multi-Mode, then you must replace the Multi-Mode GBIC modules that are shipped
with the NIC Module. Remove each Multi-Mode GBIC module from the installed NIC
Module by squeezing the metal clasps at the top and bottom of the GBIC module
towards the module itself, and firmly pull out the module until it is fully removed from
its slot.
7. The GBIC modules that you will be using must now be installed in the NIC Module. With
the label side of the GBIC module facing the right, slide each module into its NIC Module
slot until the metal clasps at the top and bottom of the module click into place.
The GBIC module can only be installed one way. If it is
oriented in its slot incorrectly, it will stop about halfway
into the slot. If this occurs, remove the GBIC module, rotate
it 180°, and reinstall it.