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Keysight E4990A Impedance Analyzer
Installation Guide
2 Troubleshooting
This chapter describes the troubleshooting process during start up and the
procedure of the operating system (OS) recovery when the Windows OS has
been damaged.
Troubleshooting during Startup
When you encounter problems during start up, see Table 2-1. System recovery
saves most of problems.
Table 2-1 Troubleshooting during startup
Symptom Solution
Turning ON ( | ) the standby switch does not
start up the system.
Confirm that the power cable is properly
plugged in.
Confirm that the line switch at the rear
panel is turned ON.
The system starts up, but it automatically
shuts down immediately.
Execute the system recovery.
The system starts up, but it enters the
service mode (The status bar at the lower
right of the screen displays SVC in red).
The measurement screen appears after
start up, but the power-on test fails with
Error Message 241 prompting on a red
background in the instrument’s
message/warning area at the lower left of
the screen.
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