HP 1652B Getting Started Manual page 704

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Removal and
Replacement of
the Rear Panel
Assembly
1.
2
l
3 .
4.
5 .
6 .
7 .
8 .
9 .
Turn off the instrument and disconnect the power cable.
Disconnect the logic analyzer cables from the rear panel of the instrument.
Remove the six screws from the top and the two screws from each side of the
instrument's top cover.
Lift off the top cover.
Disconnect the line filter cable from the power supply.
Disconnect the ground cable of the line falter from the oscilloscope assembly.
Disconnect the Intensity adjust cable from the rear of the high voltage sweep
board.
Remove the eight screws at the edges of the rear panel.
Pull the rear panel straight out from the instrument about three inches.
I
Note 'a
An ESD ground spring clip is installed on the RS-232C connector behind the rear
panel. This ground spring clip is not mechanically secured to the instrument.
Make sure the ground spring clip does not fall off during disassembly.
10.
11.
12.
13.
14.
15.
16.
Remove the two screws holding the HP-IB ribbon cable connector to the rear
panel.
Disconnect the External Trigger Input cable from connector J9 on the Main
Assembly.
Disconnect the External Trigger Output cable from connector JlO on the
Main Assembly.
Disconnect the Probe Compensation cable from the oscilloscope board.
Disconnect the fan cable from the Main Assembly.
Separate the rear panel from the instrument cabinet.
Replace the rear panel by reversing this procedure.
11:'
Note d
When you reinstall the top cover, insert the four screws on the sides of the cover
f
lrst while making sure the cover fits into the grooves of the instrument cabinet.
Then insert the six screws in the top of the cover.
HP 1652B/1653B
Assembly Removal and Replacement
Service Manual
6D-3