10
Figure 13 Slot arrangement (for the SR8803-X-S)
(1) MPU slots (2) LPU
slots
Installing MPUs and LPUs
CAUTION:
Before installing a card to the chassis, make sure the connectors on the card are not broken or blocked to
avoid damaging the backplane.
IMPORTANT:
• To ensure good ventilation, install a blank filler panel over an empty MPU or LPU slot. MPU slots use
different type of blank filler panels than LPU slots.
• The MPUs and LPUs have protection boxes when shipped. Before you install an MPU or LPU, pull the
ejector levers on the card outwards, and then pull the card out of the protection box.
The installation procedures for MPUs and LPUs are the same. Unless otherwise stated, MPUs and LPUs
are collectively referred to as "cards" in this document. These cards are hot swappable.
To install a card:
1. Wear an ESD wrist strap, and make sure it has a good skin contact and is correctly grounded.
2. Remove the blank filler panel from the slot to be used. Keep the blank filler panel for future use.
3. Press the ejector levers down to the horizontal level.
Skip this step for cards except the multi-service base cards.
4. Hold the card by the front panel with one hand and support the card bottom with the other, as
shown by callout 1 in Figure 14. Slide the card steadil
y into the slot along the guide rails.
5. When most part of the card is inserted in the slot, rotate the ejector levers on the card outward, as
shown by callout 2 in Figure 14.
6. Push th
e card until the positioning pin on card touches the hole on the chassis.
7. Rotate the ejector levers inward until the ejector levers touch the panel tightly to seat the card into
the backplane, as shown by callout 3 in Figure 14.
8. Fasten the
captive screws on the card, as shown by callout 4 in Figure 14.