2 Unscrew the captive screws 5, 6, 7, or 8 on the card that you are going toremove.3 Pull out the card.| 4 If you are now going to install a new signal card, (Model 010 or Model 500), go to| step 10 on page 3-47.| If you are now going to install a new bypass card, or change the jumper settings on| the card that you have just removed (Model 020 or Model 600), go to step 5 on| page 3-46.Chapter 3. Removal and Replacement Procedures 3-45