Eventide ARGUS 3000 - Cpu Board Replacement; General; 3000 And 5000 CPU Board Replacement

Section 7 H
CPU BOARD REPLACEMENT
7.1 General
The procedure for replacing the CPU board on the 3000 and the 5000 are very similar. The only difference is
the database board that must be removed from the 5000. Therefore these procedures are given together. The
procedure for replacing the 7000's CPU board is given separately.
NOTE
When removing the screws, take note of their location, as it is important that they are replaced
correctly.
In the models 5000 and 7000, the operating system ROMs are located on the CPU board. In the model 3000,
the database/operating system ROMs are located on the CPU board. If the new CPU board does not contain these
ROMs, you must remove the ROMs from the old CPU board and transfer them to the new CPU board. If the
new CPU board DOES contain these ROMs, be sure to replace the identification plate on the unit's rear cover.
The ROMs are serialized for a specific unit. DO NOT interchange ROMs from one unit to another.
Once the CPU board is replaced, be sure to return the old board to Eventide Avionics.
7.2 3000 and 5000 CPU Board Replacement
The ordering part number for the 3000's CPU board is #103017. The ordering part number for the 5000's CPU
board is #103001.
Necessary Tools: Small phillips head screwdriver
Remove The Old CPU Board
1. Remove the screws from the right side panel (panel nearest the operating controls). Note the
position of smaller screws versus larger ones. Remove this panel to expose the database board in
the model 5000, or the CPU board in the model 3000. (If the Argus is a model 3000, skip the next
step.)
2. Two pairs of small pins and two 28 pin connectors on the component side of the database board
connect it to the underlying CPU board. The connectors are located near the front panel bezel.
Gently pull on the database board, lifting it up from the back of the unit and wiggling it gently to
disengage it from the connector on the CPU board. Remove the database board from the unit's
housing.
3. The rear cover is attached to the unit housing with five flat-head screws. Remove these screws.
Page 32 Argus Maintenance Manual Part #5006 July, 1993