MP3900X Series Router Installation Manual
Router Maintenance
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6-3
Figure 6-3 Pull out the SPU card 1
Step 2: Hold the puller on the SPU card with both hands and turn the puller outward to separate
the SPU card from the chassis backplane. The figure below shows the diagram of pulling
out the SPU card:
Figure 6-4 Pull out the SPU card 2
Step 3: Slide smoothly along the slot guide, pull out the SPU card, and place the unloaded SPU
card on the anti-static mat or in the packaging box.
Figure 6-5 Pull out the SPU card 3
Step 4: Rotate the puller on both sides of the SPU card to be installed outwards, then hold the
board with both hands and insert it smoothly along the slot guide rail.
Figure 6-6 Insert SPU 1
Step 5: Close the puller inward, so that the back end of the SPU card is in close contact with the
backplane. The following figure is the diagram of installing the SPU card:
