Appendix B - Option Filter Installation
Optional filters can be purchased with the Portable One Plus Access, or
they can be purchased later. If you purchase option filters after your
instrument was originally delivered, you will need to install them
yourself. The Portable One Plus Access has slots for two optional
filters.
To add or replace optional filters, follow this procedure:
1. Disconnect the Portable One Plus Access from the AC Mains
supply and place it, top down, on a table or bench. Make sure
the the front panel cover is in the open position (so that the front
panel is visible).
2. Using a Phillips (cross-head) screwdriver, remove the seven screws
recessed into deep holes in the bottom of the instrument. These
screws are shown on Figure 8-1. Do not remove the screws that
attach the rear feet or the four small screws holding the tilt bail
assembly in place. Note that the screw nearest the handle is
longer than the others; it must be replaced in its original location
during reassembly.
WARNING - There are dangerous voltages
inside the case. It is also possible to
damage the instrument if proper techniques
are not used. Always refer all servicing to
qualified personnel.
B
Option Filters
Portable One Plus Access User's Manual B-1
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