Keithley TEC SourceMeter 2510, Service Manual, Page: 60 / 120

Models 2510 and 2510-AT Troubleshooting 4-3
Power-on self-test
During the power-on sequence, the Model 2510 will perform a checksum test on its EPROM
and test its RAM. If one of these tests fails, the instrument will lock up.
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. In the event of a test failure, refer to Display board checks for details on
troubleshooting the display board.
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. Display the MAIN MENU by pressing the MENU key.
2. Using the EDIT keys, select TEST, and press ENTER to display the SELF-TEST
MENU.
3. Select DISPLAY-TESTS, and press ENTER to display the following menu:
FRONT PANEL TESTS
KEYS DISPLAY-PATTERNS CHAR-SET
4. 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.
5. 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.
2510-902-01 (E - Mar 2010)(Service).book Page 3 Tuesday, March 16, 2010 1:04 PM