To Remove And Replace The Hp 1660Es-Series Oscilloscope Board - HP 1660E Series Service Manual

Replacing Assemblies
To remove and replace the HP 1660ES-series oscilloscope board
To remove and replace the HP 1660ES-series oscilloscope board
1 Using previous procedures, remove the following assemblies:
• Handle
• RearFeet
• Cover
• Rear Panel
• Disk Drive Assembly
• Power Supply
2
Disconnect the CPU board interface cable from the acquisition board by pressing
down on the cable release tabs on the cable socket located on the board.
3
Disconnect the power supply cable.
4
Remove the hex nut from the oscilloscope input attenuators on the lower front
panel.
5 Slide the mounting plate out the rear of the instrument.
Verify that all cable release tabs are down to slide the mounting plate out, then slide the
mounting plate toward the rear out of the chassis.
6 Remove the oscilloscope board.
a. Disconnect the acquisition board-oscilloscope board interface cable from the
oscilloscope board. To do this press down on the cable release tabs on the cable
socket located on the board.
b. Remove the screw at the center of the oscilloscope board that secures the board
to the mounting plate.
c. Slide the board approximatly 0.5 em and lift the board off the mounting plate.
7 Remove the attenuators from the oscilloscope board by removing the mounting
screws (two per attenuator) from the underside of the board. Then carefuily lift the
attenuator straight off of the board.
S Reverse this procedure to install the oscilloscope board.
Ensure that the monitor is properly installed before installing the oscilloscope board.
When installing the mounting plate, check that the alignment tabs on the mounting plate are
installed in the alignment holes in the inside bottom, front of the chassis.
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