To Check The External Keyboard; To Check The Mouse; To Check The Fdd - Agilent Technologies E5052A Service Manual

between the A52 and A22. Also check the cables between the A51 LCD and A52.
• If the cables are normal, check the A51 LCD.

To Check the External Keyboard

Procedure
Step 1. Connect the external keyboard to the E5052A rear panel connector.
Step 2. Turn the instrument on.
Step 3. Press key.
Step 4. Press and keys on the external keyboard, and verify that the cursor on the menu
bar moves up and down. If it doesn't work, the external keyboard or the A20 digital
motherboard may be faulty.

To Check the Mouse

Procedure
Step 1. Connect the mouse to the E5052A rear panel connector.
Step 2. Turn the instrument on.
Step 3. Move the mouse and verify that the mouse pointer moves smoothly. If it doesn't move
smoothly, check first whether a foreign substance (dust, lint, etc.) is in the track ball hole of
the mouse or not.
Step 4. Verify that the mouse buttons work normally. If any button doesn't work or the mouse
pointer doesn't move, a failure in the mouse or the A20 digital motherboard is suspected.

To Check the FDD

Procedure
Step 1. Connect the external keyboard to the E5052A rear panel connector.
Step 2. Turn the instrument on.
Step 3. Insert a 1.44 MB floppy disk, formatted in DOS format, into the FDD slot.
Step 4. Press
Step 5. Click File Dialog...
Step 6. Select 3 1/2 Floppy [A:] from "Save in" pull-down menu.
Step 7. Enter e5052a in the file name box from the keyboard.
Step 8. Click "Save" button.
Step 9. Press
Step 10. Click File Dialog...
Chapter 4
key, and click Save State in the menu bar.
to open the "Save As" dialog box.
key, and click Recall State in the menu bar.
to open the "Open" dialog box.
Troubleshooting
Function Specific Troubleshooting
105