Front Panel Tests - Keithley 6430 Instruction Manual

Perform the following steps to replace the line fuse:
1.
2.
CAUTION
3.
NOTE
Table 20-1
Power line fuse
Line voltage
100-240V

Front panel tests

There are three front panel tests: one to test the functionality of the front panel keys and two
to test the display.
KEYS test
The KEYS test lets you check the functionality of each front panel key. Perform the follow-
ing steps to run the KEYS test.
1.
2.
3.
4.
5.
Carefully grasp and squeeze together the locking tabs that secure the fuse carrier to the
fuse holder.
Pull out the fuse carrier, and replace the fuse with the type specified in Table 20-1.
To prevent instrument damage, use only the fuse type specified in
Table 20-1.
Reinstall the fuse carrier.
If the power line fuse continues to blow, a circuit malfunction exists and must be
corrected. Refer to the troubleshooting section of this manual for additional
information.
Rating
250V, 2.5A, Slow
Blow 5 × 20mm
Display the MAIN MENU by pressing the MENU key.
Select TEST, and press ENTER to display the SELF-TEST MENU.
Select DISPLAY-TESTS, and press ENTER to display the following menu:
FRONT PANEL TESTS
KEYS DISPLAY-PATTERNS CHAR-SET
Select KEYS, and press ENTER to start the test. When a key is pressed, the label name
for that key will be displayed to indicate that it is functioning properly. When the key is
released, the message "No keys pressed" is displayed.
Pressing EXIT tests the EXIT key. However, the second consecutive press of EXIT
aborts the test and returns the instrument to the SELF-TEST MENU. Continue pressing
EXIT to back out of the menu structure.
Routine Maintenance
Keithley part no.
FU-72
20-3