Service manual

REPAIR
SERVICE MANUAL
Troubleshooting
3-33
7.3.3. Keyboard Tests
Keyboard inspection checks that the key are making proper contact. There are three
keyboard self-tests.
(1) Select "4", "5", or "6" from the Self Test menu. If a serial number has not been input
before starting the test, the pop-up window will prompt for the serial number; either
enter the serial number, or press RETURN to start the test. The display in Fig. 3.20
below indicates that the keyboard test mode has been established.
Press RETURN twice to go to MENU.
KEYBOARD TEST
*****
*****
Fig. 3.20 Keyboard Test #1 Display
NOTE:
•
The location of the keys tested in each test sequence (test 4, 5, or 6) are shown below.
B
A
Fig. 3.21 Keyboard Test Key Locations