Agilent Technologies 1670G Series Service Manual page 175

To remove and replace the oscilloscope board (oscilloscope
option only)
Using previous procedures, remove the following assemblies:
1
•
Handle
•
Rear Feet
•
Cover
•
Rear Panel
•
Disk Drive Assembly
•
Acquisition Board
•
Power Supply
Remove the hex nut from the oscilloscope input attenuators on the lower front
2
panel.
Slide the mounting plate out the rear of the instrument.
3
Verify that the cable release tabs are down to slide the mounting plate out, then slide the
mounting plate toward the rear out of the chassis.
Remove the oscilloscope board.
4
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 approximately 0.5 cm and lift the board off the mounting plate.
Remove the attenuators from the oscilloscope board by removing the mounting
5
screws (two per attenuator) from the underside of the board. Then carefully lift the
attenuator straight off of the board.
Reverse this procedure to install the oscilloscope board.
6
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.
To remove and replace the oscilloscope board (oscilloscope option only)
Replacing Assemblies
6–13