Technical data

100 4000 X-Series Oscilloscopes Service Guide
5 Replacing Assemblies
To remove the line filter board 129
To remove the power supply 132
Tools Used for Disassembly
Use these tools to remove and replace the oscilloscope
assemblies:
• T6, T10, and T20 TORX drivers.
• 5/8- inch socket driver or adjustable wrench (for BNC
nuts).
• Flat head screw driver.
See how the Oscilloscope Parts Fit Together
An exploded view of the oscilloscope is included in the
“Replaceable Parts” chapter. It shows the individual part
numbers used in the assemblies, and shows you how the
parts fit together.
Read All Warnings and Cautions
Read the following warnings and cautions before removing
and replacing any assemblies in the oscilloscope.
WARNING
HAZARDOUS VOLTAGES!
Read the safety summary at the back of this book before proceeding.
Maintenance is performed with power supplied to the oscilloscope and with the
protective covers removed. Only trained service personnel who are aware of the
hazards involved should perform the maintenance. Whenever possible, perform the
procedures with the power cord removed from the oscilloscope.
WARNING
AVOID ELECTRICAL SHOCK!
Hazardous voltages exist on the LCD assembly and power supply. To avoid
electrical shock:
1 Disconnect the power cord from the oscilloscope.
2 Wait at least three minutes for the capacitors in the oscilloscope to discharge
before you begin disassembly.
Read the Safety Summary at the back of this manual before you begin.