Replacing The System Interface Board - Tait TB8100 Service Manual

5.1

Replacing the System Interface Board

Compatibility
Removal
Refitting
104 Reciter Board Replacement
Important
You must reprogram and recalibrate the reciter after replac-
ing the system interface board. Refer to
and Recalibration" on page
Refer to "Reciter Disassembly and Reassembly" on page 99
removing and refitting the covers and front and rear panels. The circled
numbers in the following instructions refer to
When fitting a replacement system interface board, you must make sure the
new board is compatible with the firmware version loaded into the reciter,
as described in the following table.
System Interface Board
standard, isolated, isolated E&M, and TaitNet:
version 1 and later
TaitNet RS-232
TaitNet Ethernet
1. Remove the digital side cover and rear panel.
2. Disconnect the flexible connector to the digital board
socket on the system interface board.
3. Remove the M3 Torx screws securing the board to the heatsink.
4. Carefully lift the board upwards off the locating pins
it from the heatsink.
1. To refit the board, follow the removal instructions in reverse order.
Important
Make sure the insulator sheet is correctly positioned and flat
on the heatsink. Although this sheet is an electrical insula-
tor, it is also thermally conductive and must allow the board
to sit as flat as possible to provide effective heatsinking.
Operating the reciter without the insulator sheet in
place will result in permanent damage to the digital
or system interface boards.
Important
Make sure the flexible connector is correctly positioned and
latched in its socket, as shown in
"Reprogramming
105.
for details on
Figure 5.1 on page
Compatible Reciter
Firmware Versions
02.02 or later
02.02 or later
03.00 or later
b
from the
c
and remove
Figure 5.2 on page
TB8100 Service Manual
© Tait Electronics Limited September 2006
106.
107.