84 Chapter 4
Troubleshooting
Function Specific Troubleshooting
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 CPU Mother Board Assembly is
suspected.
To Check the Video Output
Procedure
Step 1. Connect an external XGA color monitor to the Video output port on the E5071C rear panel.
Step 2. Turn the external monitor on.
Step 3. Verify that the monitor screen view is the same as the display on the LCD. If the monitor
screen view is abnormal, a failure seems in the PCA PCI DSP Card.
To Check the External Trigger Input
Procedure
Step 1. Press and to initialize the E5071C.
Step 2. Press key.
Step 3. Click Trigger Source and, then, External in the menu bar to set the trigger mode to
"External".
Step 4. Connect a BNC Short or 50 Ω termination to the Ext Trig connector on the rear panel and
disconnect it. Thereby a measurement trigger should be generated and a measurement
result (trace) should be refreshed.
Step 5. If no trigger occurs, a failure in the PCA PCI DSP Card is suspected.
To Check the GPIB
Procedure
Perform the E5071C performance test program. If the controller cannot detect the E5071C,
the problem seems in the GPIB card or the connection of the GPIB cable.
To Check the USB Interface Card
Procedure
Connect the USB cable between the controller PC and the E5071C. Turn the controller PC
on. If the E5071C cannot detect the controller PC, the problem seems in the USB Interface
Card or the CPU Mother Board Assembly is suspected.
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