To Check The Mouse; To Check The Fdd; To Check The Vga Display Output - Agilent Technologies E4991A Service Manual

Troubleshooting
Function Depend Troubleshooting

To check the Mouse

Procedure
Step 1. Connect the mouse to the E4991A rear.
Step 2. Turn the E4991A on.
Step 3. Move the mouse and press the mouse buttons, and make sure that the mouse pointer moves
smoothly and the mouse buttons work correctly. If any fail to work, there is a possibility
that the mouse or the A20 Digital Motherboard gives problem.

To check the FDD

Procedure
Step 1. Inset the floppy disk into the E4991A FDD.
Step 2. Click the followings. Then "Save As" dialog box is displayed.
-
Save/Recall SAVE STATE
Step 3. Select the drive and file name as follows;
Drive: [-a-]
File name: e4991a
Then, click . If any fail to work, there is a possibility that the floppy disk, the A28 FDD
OK
or the flat cables between the FDD and the A20 Digital Motherboard via the A26 Display
board gives problem.
Step 4. Next, click the followings to recall the state file you saved. Then "Open" dialog box is
displayed.
-
Save/Recall RECALL STATE
Step 5. Select the drive and file name as follows;
Drive: [-a-]
File name: e4991a
Then, click . If any fail to work, there is a possibility that the floppy disk, the A28 FDD
OK
or cable between the FDD and the A20 Digital Motherboard gives problem.

To check the VGA Display Output

Procedure
Step 1. Connect the external monitor to the E4991A rear.
Step 2. Turn the external monitor on.
Step 3. Make sure that the screen on the external monitor is the same as the screen on the LCD. If
screen is not displayed on the external monitor, there is a possibility that the A26 Display
board gives problem.
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