Removing and Installing Station Boards
1. Normally you should disconnect the AC power cord from the AC outlet and disconnect the optional battery
back-up assembly from the power supply; however, when necessary, you can remove or install a digital
station board in an operating system. If you must do this, connect one end of a standard telephone handset coil
cord to the precharge port on the power supply. During step 5, you will connect the other end of this coil cord
to the precharge jack on the line board.
CAUTION
Do not install digital station boards in an operating system unless the board revision's meet the following
criteria:
•
FXLDS board revision D or higher
•
FXSDS board revision E or higher
2. Install your static discharge wrist strap on your bare wrist; adjust it for a snug fit. Be sure that the strap is
touching bare skin and 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. Each new station board is supplied in a static protection bag for safe keeping. When you are ready to install
the board, remove it from its static protection bag. Conversely, when you remove a station board from the
cabinet, immediately place it in a static protection bag.
4. Locate the proper board slot—on FX systems the station boards connect to any universal slot.
5. If you are removing or installing the station board in an operating system, connect the free end of the
precharge cord that you installed in step 1 to the precharge jack on the station board.
6. If you are removing station boards from the cabinet, remove the retaining hardware, pull the boards toward
you until their board edge connectors separate from the cabinet’s backplane connection, and slid the boards
free of the cabinet.
7. To install station boards, orient them with the left and right guides in cabinet board cage. and press the boards
firmly until their board edge connectors properly mate with the connection on the cabinet’s backplane.
8. Make a final inspection to ensure that all station boards are oriented correctly and mated properly.
9. Install and tighten the supplied screws to secure the installed boards to the board cage.
10. Each station board includes a ferrite collar. Snap the ferrite collar around the cable to provide protection
against radio frequency interference.
4 Removing and Installing Circuit Boards in the Equipment Cabinet
IMI89–267
Installing The Digital Station Board
