Chapter 5 239
Post-Repair Procedures
External Keyboard Test
External Keyboard Test
Description
To test the operation of an external keyboard, you interrupt the boot
process and instruct the instrument to use the external keyboard on the
next start-up. Then use the external keyboard to verify that the A25
SCSI Assembly has been installed properly and that the instrument
can recognize the keyboard by typing command characters on the
screen.
NOTE The keyboard path may be set to front_panel or PS2. Front_panel is the
instrument front panel keypad, and PS2 is an external keyboard. To
verify the keyboard path cycle the instrument power and view the boot
screen for the keyboard path message.
Procedure
If the keyboard path is shown as front_panel, perform the following
steps to verify keyboard operation.
1. Connect a PS2 keyboard.
2. Reboot the instrument and watch the instrument display.
3. When the message To discontinue, press any key within 2
seconds appears, press any front panel numeric key (0-9).
4. Backspace to clear any characters you may have typed after the
prompt Main Menu: Enter Command>.
5. From the instrument front panel, enter 52, and press
Enter. A
message should appear on the instrument screen that tells you that
the keyboard path is now PS2. The keyboard path change is not
effective until the instrument is reset.
6. To confirm the operation of the external keyboard perform the
following steps:
a. From the instrument front panel, enter 99 and press
Enter. This
will reset—reboot—the instrument.
b. When the message To discontinue, press any key within 2
seconds appears, press the space bar on the external key board to
interrupt the boot process.
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