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Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
www.PressureSystems.com
5 - 7
5.1.3.2 PC-242 Amplifier/Multiplexer Board (9021 ONLY)
The following procedures should be used for replacement of the PC-242 Amplifier/Multiplexer
Board. The PC-242 is attached directly to the top plate of the 9021. Use the tools and follow the
general warnings already described at the start of Section 5.1.
(1) Disassemble the module as described in Section 5.1.2. Carefully remove the wiring harness
from connector P1 of the PC-242 board.
(2) Remove the screws fastening the PC-242 board to the top panel and remove the board
assembly. For the 9021 (with D-shell top plate connectors), this will consist of two (2)
standoff screws attached to each top plate D-shell connector (for a total of 24 hex standoffs).
(3) Install the new PC-242 board by aligning the twelve interface connectors on the board with
the cutouts on the top panel.
(4) Reinstall the hardware that secures the PC-242 to the top panel. Install the wiring harness
to connector P1 of the PC-242, 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) Install the module electronics into the housing. 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 in the housing.
(6) Replace the six (6) Allen-head screws that secure the top panel to the scanner housing and
tighten. Do not over-tighten; 7-9 inch-pounds should be sufficient.
(7) Test your scanner to ensure proper operation.
5.1.3.3 PC-280 Ethernet Microprocessor/A-D Board (9016, 9021, 9022)
The following procedures should be used for replacement of the PC-280 Ethernet
Microprocessor/A-D Board. Use the tools and follow the general warnings already described in
Section 5.1.1.
(1) Disassemble the module as described in Section 5.1.2.
(2) Carefully remove any attached wiring harnesses from connectors P1, P3, and P6 of the
PC-280 board. In the 9016, this will require cutting one nylon tie-wrap attached to the
center mounting bracket.