Grass Valley Profile Serial Digital - Manual (Page 16)

Serial Digital I/O Upgrade Installation
8 Serial Digital I/O Upgrade Installation
Removing Circuit Boards
Installing the serial digital I/O board may require that you remove or reposition
one or more currently installed boards to make room for the new board or to meet
internal cabling constraints.
When unplugging boards, you may also find it necessary to remove the screw
mounting an adjacent circuit board, and in the case of shorter circuit boards, it may
be necessary to remove an adjacent tall circuit board to ease removal of the shorter
board.
Use the following procedure to unplug circuit boards from the motherboard:
1. Remove all interior and rear panel cables from the circuit boards that are to
be removed.
2. Use the Torx tool with the T15 tip to remove the screw from the bracket
inside the chassis (
Ê
in Figure 3) and the screw through the rear panel
outside the chassis (
Ë
in Figure 3).
CAUTION: To avoid damage to the circuit board when removing or
installing it:
- Do not rock the circuit board in the EISA bus connector — pull straight
up to remove.
- Do not grasp or push on the rear-panel connectors when removing or
installing circuit boards in the card slots.
3. Extract the circuit board. If the circuit board is tall, use the extraction lever
on the front of the board and the extraction ring at the back of the board to
lift the circuit board free of the connectors on the motherboard. For shorter
circuit boards, carefully grasp the board and lift upward to free the circuit
board from the motherboard connectors. You might need to remove an
adjacent tall board to get enough room for a safe hold on the shorter board.