Radio Shack CCR-81 Operation Guide

6
Programmable Mode
When the MODE Switch is not illuminated , the
Controller is in Programmable Cont rolled
Polling Mode.
In this Mode, the Controller 's operation
depends on the pro g ram running in th
CENTRAL COMPUTER. For instance , if y our
program allows it , you can go directly to a
specific
A UX ILIARY C OMP TER without ch e ckin g
to see
if any other student needs as sis tance . Or ,
if the software allows it , you can pa ssword
protect certain files on a CENTRAL COMPUTER
diskette.
The point to keep in mind is that the
CENTRAL COMPUTER is in charge when the
Controller is in Pro gram mable Mode.
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CONTROLLER :::J ; i:
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Troubleshooting
and Maintenance
If you have problem s operating your Network
3 Controller System , check the following table
of symptoms. Hopefully, you'll find the cure as
well. If you still can ' t- remedy the problem, take
the unit to your local Radio Shack where it will
be promptl y fixed and returned to you.
Symptom
Cure
..
The Network 3 Check to be sure both the
Controller will Power Supply to Controller
not power-up.
and the Power Supply to wall
are properly connected.
The
CENTRAL or a
Check connections for Computer
AUXILIARY COMPUTER power supplies. For further
will not power-up.
information, see Computer's
owner's manual.
All AUXILIARY
Check the Controller-to-Central
COMPUTERS power-up cable connection.
but will not operate.
A single AUXILIARY Check the AUXILIARY
COMPUTER
powers-up
COMPUTER'S Controller-to-
but does not
Auxiliary connection.
operate properly.
Data is lost Check all connectors.
or garbled during
Be sure cable length
transmission.
does not exceed 100'.
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Radio Shack CCR-81 Specifications

General

Brand	Radio Shack
Model	CCR-81
Category	Desktop
Language	English