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172
Radix User's Manual
cleaning with a damp rag and alcohol. Do this whenever the case
appears to be getting dirty, always being careful to avoid dripping
alcohol on the printer mechanism.
To remove dust and paper lint from inside the tractor and
printer areas, it's best to use a soft brush, but, be very, very careful
not to bend or injure any electronic parts or wiring, as they are
vulnerable to a heavy-handed touch.
Besides the periodic cleanings, the only other maintenance
you'll likely encounter will be changing the ink ribbon cartridge,
replacing a blown fuse, or replacement of the print head after a
long period of use.
Replacing the Ink Ribbon
When the printing gets too faint for comfortable reading, it's
time for a new ink ribbon. By far the most convenient way is to
simply replace the entire ribbon cartridge (Appendix A describes
this procedure). After all, that's the purpose of the cartridge: to
save time and messing with dirty ribbons.
It is possible, however, to buy a replacement ribbon and insert
it yourself inside the original cartridge casing. The procedure for
inserting a new ribbon into the old cartridge (not recommended
for non-mechanical types!) is as follows.
1. First, obtain from your Radix dealer the correct type of ribbon
"sub-cassette" (not spool-type ribbons used with some other
printers).
2. Remove the ribbon cartridge from the printer by holding both
ends and pulling straight up from the holder springs. (Refer to
Appendix A for illustrations of installing ribbon cartridge.)
3. Pry open the cartridge cover with a thin-bladed screwdriver.
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Arrows in Figure 14-l show the numerous slots for inserting a
screwdriver.
4. Press hard against the end of the idler gear holder to make a
gap between it and the ribbon drive gear, and remove the old
ink ribbon sub-cassette. See Figure 14-2.
5. Clean out any dirt from inside and around the cartridge and
around the ribbon drive gear.
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