Pressure Systems 9022 - Manual (Page 140)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
www.PressureSystems.com 5 - 6
5.1.3.1 PC-206 Amplifier/Multiplexer Board (9016)
The following procedures should be used for replacement of the PC-206 Amplifier/Multiplexer
Board. Use the tools and follow the general precautions described in Section 5.1.1.
(1) Disassemble the module as described in Section 5.1.2. Carefully remove the wiring harness
from connector P1 of the PC-206 board. Note the orientation of the PC-206 relative to the
rest of the module to ensure the new PC-206 is installed in the same position.
(2) Remove the two (2) Phillips-head screws securing the PC-206 board to the DH200
transducers. Carefully disconnect the PC-206 board from the DH200s by slowly working
the board off; starting at one end and moving down the length of the board. It is important
that the gold pins are not bent when removing the board.
(3) Replace the old PC-206 board with a new one by placing it loosely on top of the DH200s.
Ensure the board end containing connector P1 is oriented the same as the board just removed.
Inspect and make sure that all the gold pins fit easily into the female end of the connector on
the DH200 transducers. Press the board down evenly until all pins are firmly seated.
(4) Install the two (2) Phillips-head screws to secure the PC-206 to the DH200s. Be careful not
to over-tighten. Install the wiring harness to connector P1 of the PC-206, ensuring proper
pin 1 location. (Pin 1 of the ribbon cable has a red stripe while pin one of P1 will
contain a square solder pad on the PC-206.)
(5) Carefully align the gasket on the top plate, ensuring it is free of contaminants. Re-install the
module electronics into the extrusion case. Ensure that the alignment posts in the module's
bottom panel align with the PC-203 or PC-280 electronics support brackets when placing the
top panel and electronics back into the housing.
(6) Replace the screws that secure the top panel to the scanner housing and tighten. Do not over-
tighten; 7-9 inch-pounds torque should be sufficient.
(7) Test your scanner to ensure proper operation.