Grass Valley PDR 100 9GB Media Drive Upgrade - Manual (Page 21)

Disassembling the PDR100
PDR 100 9GB Disk Drive Upgrade 11
Removing the Reference Genlock and RS422 Boards
You must remove the Reference Genlock and RS422 boards to be able to
remove the power supply shield, described later in this section.
Use the following procedure to unplug the Reference Genlock and RS22 boards
from the motherboard.
NOTE: Make a note or diagram of cable connections prior to removal to
facilitate reinstallation.
1. Remove all interior and rear panel cables from the Reference Genlock and
RS422 boards located in slots J16 and J17 respectively.
2. Use the Torx tool with the T15 tip to remove the screw from the bracket
inside the chassis (
➊
in Figure 6) and the screw through the rear panel
outside the chassis (
➋
in Figure 6 on Reference Genlock card only).
CAUTION: To avoid damage to the circuit boards when removing or
installing them:
• Do not rock the circuit boards in the EISA Bus connector — pull straight up
to remove.
• Do not grasp or push on the rear-panel connectors when removing or
installing a circuit board in a card slot.
3. Extract the circuit boards. 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 short 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 board.