7
– MAINTENANCE / TROUBLESHOOTING
MODEL 5000 SERIES MANUAL
Version 1.23
7-1
7 MAINTENANCE / TROUBLESHOOTING
7.1 Maintenance
7.1.1 Fan Filter
The fan filter located on the rear panel should be cleaned semimonthly to maintain
adequate airflow for system cooling. Gently pry off the fan cover, remove the filter
elements (note to way the filter elements are installed), and clean with water.
Thoroughly dry and reinstall, being sure to alternate corrugated elements in opposite
directions from each other.
7.1.2 Test Fixtures
Test fixtures should be regularly cleaned with canned freon to remove metal filings.
Filings can build up, bridge between device leads, and cause erroneous test
measurements. Replace fixture or socket only (see fixture parts list in the Parts
Lists/Schematics section of this manual) when necessary. If socket is replaced, be
sure to remove all flux.
7.1.3 Run Self-Test Every Usage
On power up system self-test (and Lo Current Deck self-test, if applicable) should be
run. This will verify tester is operating properly. See section 7.2 for system self-test
and section 8.4 for Lo Current Deck self-test.
7.1.4 Firmware (Software) Update
Tester execution software is stored on flash memory located on the CPU board. This
software can be updated via the PCW PC Software supplied with the system. See
section 6.3.3.5 for more information. If, for any reason, the flash memory chips need
to be replaced, the following procedure should be followed:
Turn system power off and remove power cord from the system.
Remove the four screws holding the system back-panel and lower the back
panel.
Carefully remove the STI PC104 card from the CPU.
Carefully remove the three 29C040 flash memory chips.
Install the new flash memory chips as shown in Figure 7-1 (
NOTE: the order
of these chips must be as shown or the system will not operate
).
Re-install the STI PC104 card.
Re-install any cables removed.
Re-install the system back panel.
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