Comdial DXP Plus Series, Руководство пользователя

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3.0 Installing The Receiver Card
You can install one receiver card in the top position on the services board. You can add two additional receiver
cards to the lower two positions on the services board; however, you must take specific programming action to
enable their use (this program feature name is: Services DTMF Highway). You can install three receiver cards on
the upper and lower expansion cabinet interface boards.
CAUTION
If you add two additional receiver cards to the lower two positions on the services board, you can add
only one receiver cards to the lower expansion cabinet interface board.
1. Be sure you are standing on the conductive mat that you have placed in front of the cabinet area and grounded
to a good earth ground. (The third wire ground of the AC power line is an acceptable grounding point if the
AC wall jack is properly grounded.) The grounded conductive mat provides a safe static electric discharge
path.
2. Install your static discharge wrist strap on your bare wrist; adjust it for a snug fit. Be sure that the strap is not
isolated by clothing. Connect the wrist strap cord between the wrist strap and an AC or earth ground.
NOTE: With the common equipment in the installed position, the ground lug on the side of the cabinet is an
appropriate grounding point since it should have a heavy ground wire connected between it and a good
earth ground.
3. Turn off the power to the system and disconnect the optional battery back up equipment.
4. Loosen the retaining hardware, and lift the front panel away from the common equipment cabinet.
5. Loosen the retaining hardware and remove the services board from the cabinet, place it in a static protection
bag, and transport the board to the static-safe work area. Do the same for the interface board if you plan to add
a receiver card to it. Further, if the common equipment cabinet contains an auxiliary board and you plan to
add the receiver card to it, follow the same procedure.
6. At the static safe work area, with your wrist strap in place, remove the circuit boards and receiver cards from
their static protection bags.
7. Referring to the illustrations on the next page, orient the host circuit board and the receiver card, and attach
them with the supplied hardware.
8. Place the host circuit board and the newly installed receiver card into a static protection bag and transport
them back to the common equipment cabinet.
9. With your static strap on your wrist, remove the board assembly from the static protection bag and install the
board in its designated board slot.
CAUTION
When pressing circuit boards into place, press them only at the extractor lever locations.
If you apply pressure at other locations you may damage the board assembly.
9. Make a final inspection to ensure that the board assembly is oriented correctly and mated properly.
10. Install and tighten the supplied screws to secure the circuit board assembly to the board cage.
10. Plug the AC line cord into the AC outlet, reconnect any battery back up equipment, and turn on the switch on
the power supply.
11. Replace the front panel on the common equipment cabinet.
IMI89–186 Installing The DTMF Receiver Card
6 – Installing The DTMF Receiver Card