Agilent Technologies DSO80204B, Руководство по обслуживанию

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Chapter 6: Replacing Assemblies
To remove and replace the acquisition board assembly
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To remove and replace the acquisition board assembly
Use this procedure to remove and replace the acquisition board assembly. When necessary, refer
to other removal procedures. The graphics in this chapter are representative of the oscilloscope
at the time of this printing. Your unit may look different.
1
Disconnect the power cable and remove the top and bottom covers.
2
Remove the AutoProbe assembly.
3
Remove the hex nuts that secure the BNC connectors to the front panel. (See “To
remove and replace the front panel assembly” on page 112.)
4
Disconnect the following cables from the acquisition board:
• Line Trig Input Cable
• Acquisition Cable
• 10 MHz Ref Output Cable
• 10 MHz Input Cable
• Aux Trig Input Cable
• Probe Comp/Cal Cable
• Ext Trig Output Cable
5
Remove the six Torx T10 screws that secure the acquisition board to the chassis.
When re-assembling,
torque the screws to 5 in-lb.
6
Remove the sixteen Torx T8 screws from the A/D converter heat sinks.
When replacing the heat sink screws start all screws but do not torque them. For each heat sink
torque 2 diagonally opposed screws first, and then torque the other 2 screws to 5 in-lb.