Chapter XX Fault Detection and Troubleshooting
245
Chapter XX Fault Detection and Troubleshooting
This chapter mainly introduces the troubleshooting and repair of the 4456 Series Digital Phosphor Oscilloscope,
0and shows possible faults and troubleshooting of the 4456 Series Digital Phosphor Oscilloscope.
Table 20.1 Faults and Troubleshooting
Fault
Cause
Troubleshooting
Black screen
The switch closed on the rear panel
or the internal fuse damaged
Turn on the power button on the rear panel
and replace the internal fuse
The oscilloscope internal power
module damaged
Replace the power module
Loose LCD cable
Re-plug the LCD cable
Start failure of WINDOWS
system
CPU module damaged or unreliable
connector connection
Replace it with a new CPU module or
reinstall
Hard disk damaged or unreliable
connector connection
Replace it with a new hard disk module or
reinstall to repair the system boot area
No trace on the screen after
the application starts
System clock losing lock
Run the self-test menu to confirm
Acquisition not finished
Run the self-test menu to confirm
Auto trigger mode in running state
Check the parameter settings of the
instrument
Abnormal waveform
display
Loss of calibration data
Recalibration
Probe damaged
When the sensor is replaced
System power fault, system clock
losing lock or abnormal PCI
communication
Run the self-test program for fast fault
positioning
Inaccurate parameter
measurement
Heavy signal noise
Select Average or Hi Res mode
Incorrect input coupling or
impedance setting
Select the correct input impedance and
coupling
Incorrect probe attenuation
Set the probe attenuation correctly
Incorrect calibration data
Recalibrate the oscilloscope
Probe not calibrated
Recalibrate the probe
Содержание 4456 Series
Страница 1: ...4456 Series Digital Phosphor Oscilloscope User Manual China Electronics Technology Instruments Co Ltd...
Страница 10: ...VIII...
Страница 55: ...Chapter V Trigger System 45 Fig 5 51 RF Test Signal Example...
Страница 69: ...Chapter VII Mathematical Operation 59 Fig 7 10 Advanced Math Example...
Страница 71: ...Chapter VIII Display System 61 Fig 8 3 Wfm Palette Menu Fig 8 4 Normal Palette...
Страница 72: ...Chapter VIII Display System 62 Fig 8 5 Inverted Palette Fig 8 6 Temperature Palette...
Страница 75: ...Chapter VIII Display System 65 Fig 8 12 XY Display Example...
Страница 165: ...Chapter XI Protocol Analyzer Option 155 Fig 11 242 1553 Trigger and Analysis Example...