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42 C1572M (9/05)
4. Slide the new card into the card guides (refer to Figure 25).
Figure 25. CM9760-DFL Downframe Looping Card Installation
5. Push the card into place firmly.
6. Tighten the screw at the top and bottom of the card.
7. Connect BNC and downframe cables as applicable.
Replacing a CM9760-DFL Card
NOTE: Before replacing a CM9760-DFL card in a CM9760-MXB(-X), you must remove the front panel of the matrix bay and disconnect the
associated CM9760-VCC video input card from the connectors on the backplane and from the connector on the CM9760-DFL card that is to be
replaced. To disconnect the CM9760-VCC card, grasp the two card handles and firmly pull the card toward you until the card is disconnected
(refer to the Installing or Replacing a CM9760-VCC Video Input Card section for additional information).
To replace a CM9760-DFL card, do the following:
1. CM9760-MXB(-X) only: Ensure that the associated CM9760-VCC video input card is disconnected as noted above.
2. Disconnect BNC and downframe cables, as applicable, from the CM9760-DFL card being replaced.
3. Remove the CM9760-DFL card by loosening the screw at the top and bottom of the card and then pulling the card toward you until it is out
of the frame.
4. Install the new card (refer to the Installing a CM9760-DFL Card section). Note that when setting the termination jumpers on the new card,
you should match the jumper positions on the card being replaced.
CM9760-MXB(-X) only: After the CM9760-DFL has been replaced, reconnect the associated CM9760-VCC card by sliding the card toward the rear
of the matrix bay until the card is seated firmly with the backplane connectors and CM9760-DFL connector. Note that, unless the audible alarm
on the power supply has been disabled, the alarm beeps twice and the Frame Fault LED flashes red twice. Then reattach the front panel of the
matrix bay.
WARNINGS:
• Rear panel card replacement should be performed by qualified personnel only.
• Electrostatic discharge (ESD) precautions must be observed when replacing a rear panel card. Always wear a grounding strap
connected to an approved grounding source when working on or near exposed electronic equipment.