Technical data

Contents
4000 X-Series Oscilloscopes Service Guide 7
Equipment Required for Troubleshooting Internal
Assemblies 82
To prepare for internal assembly troubleshooting 83
Flowchart for Internal Assembly Power Troubleshooting 86
System Board Drawings 87
To check the system board power supply test points 89
To check the line filter board AC output 91
To check the power switch 92
To check the power supply DC output 94
To check the display supplies 95
To check the keyboard supplies 96
To check the fan 97
5Replacing Assemblies99
To remove the handle 102
To remove the adjustable legs 103
To remove the cabinet 104
To remove the rear deck assembly 105
To replace the battery 108
To remove the acquisition board 109
To remove the touch controller board 112
To remove the front panel knobs 115
To remove the front bezel assembly 116
To remove the display assembly 120
To remove the keyboard and keypad 122
To remove the fan assembly 125
To remove the power supply shield 126
To remove the line filter board 129