6-2 | DYCOR LCD RESIDUAL GAS ANALYZER WITH SYSTEM 2000 SOFTWARE
master Board
The Master board is found behind the front panel of the Ethernet LCD to the
left of the heat sink (see Figure 6-1). The entire front panel is part of the Master
board and is returned to the factory when a replacement board is ordered.
Make sure that the RS-485 and RS-232/RS-485 dipswitch settings are
recorded before shipping the board to the factory to facilitate setting
up the new replacement board. Also note the outlets to which your
cables are connected on the panel. See Figure 6-4.
removing the master Board
To remove the Master board, follow these steps:
1. Remove the 1/4” screws from the top and bottom of the unit and the 3/16”
screw from the left side of the unit (see Figure 6-1). These three screws hold
the board in place.
2. Loosen or remove the screws at the top and bottom of the option plate to al-
low easier access to the removal of the Master board.
3. Pull out the front panel and Master board.
replacing the master Board
1. Place the new board with attached front panel into the slot from which you
removed the old board. There is one connector into which to plug the re-
placement board.
2. Replace or retighten the screws for the option plate to put it back in place.
3. Secure the board and front panel in place using the 1/4” screws for the top
and bottom of the unit and the 3/16” screw for the left side.
4. Using the information that you recorded from your old board, set the RS-485
and RS-232/RS-485 dipswitch settings. Plug in the cables as required.
NOTE
