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Model 8901B
Service
8-12. GENERAL DISASSEMBLY PROCEDURES
Top Cover Removal
1.
Remove the two top plastic standoffs on the rear panel by removing the Pozidriv screws from
2. Unscrew the Pozidriv screw at the middle of the rear edge of the top cover. This is a captive
3. Lift the top cover off the instrument.
each standoff.
screw and will cause the top cover to push away from the frame.
Bottom Cover Removal
1.
Turn the instrument upside down.
2. Remove the two top plastic standoffs on the rear panel by removing the Pozidriv screws from
3. Unscrew the Pozidriv screw at the middle of the rear edge of the bottom cover. This is a captive
4. Lift the bottom cover off the instrument.
each standoff.
screw and will cause the bottom cover to push away from the frame.
Side Cover Removal
1.
Remove the two screws holding each side panel strap handle in place (there is one screw at either
2. Remove the strap handle caps and the strap handles.
3. Slide the side panel towards the rear of the instrument and then pull it off.
end of each strap handle).
Information Card Tray Removal
1. Turn the instrument upside down.
2. Remove two plastic feet from one side of the bottom cover.
3. Rotate the information card tray away from the remaining two plastic feet and remove.
8-13. FRONT-PANEL DISASSEMBLY PROCEDURE
Front-Panel Assembly Removal
1.
2.
3.
4 .
5.
6.
7.
Remove the information card tray (refer to Information Card Tray Removal).
Remove the knurled nuts on the RF input (Type-N) and the modulation output/audio input
(BNC)
connectors.
Pry up the plastic trim strip on the top of the instrument's front frame with a small screwdriver.
Remove the three screws in the channel covered by the trim strip.
Remove the two outside screws and the center screw from the channel on the bottom of the front
frame.
Pull the front-panel assembly outwards.
To completely separate the front panel from the instrument, disconnect the ribbon cable
connectors and the
RF
cables.
Disassembly Procedures
8C-1
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