Keysight E5063A - Page 20

20 Keysight E5063A Network Analyzer
Troubleshooting
No Display Troubleshooting
1-
Step 2. Check system fan inside.
If the system fan, located on the left side of the chassis inside the E5063A,
does not run, the problem seems to be in the A51 DSP board or the flat cable
between the A51 DSP board and A60 CPU module. In this case, remove the
E5063A outer cover and determine if the fan runs or not.
If a beep and power shutdown occurs immediately after the power is turned
on, there is a possibility that the fan would not run. The power shutdown
occurs the moment the system fan stops by any anomaly. In this case, check
the fan.
If the power shutdown occurs without a beep, the problem seems to be with
the A51 DSP board or the A60 CPU module.
Step 3. Check LED of “Num Lock” key.
Press the Num Lock key on the keyboard. If the LED on the keyboard does not
light as shown in Figure 1-6, a problem seems to be in the A60 CPU module.
Figure 1-6 LED of the Num Lock key
Check the following before replacing the A60 CPU module.
• Connections to the A60 CPU Module are normal
• There are no disconnections or loose connections
Step 4. Check the external monitor
Connect an external VGA monitor to the External Monitor Output Port on the
E5063A rear panel.
• If something is displayed on the external monitor, the problem seems to
be related to the LCD display. Also, check the A52 Front Panel I/F board
because the ON/OFF setting of the LCD backlight is controlled by the A52
Front Panel I/F board.
• If nothing is displayed even on the external monitor, the problems seems
to be in the A60 CPU module.