Radio Shack TRS-80 Model III - Troubleshooting and Maintenance; AC Power Sources

OPERATION
13 /
Troubleshooting
And
Maintenance
If
you
have
problems operating
yourTRS-80, please
check the following
table
of
symptoms and
cures. It's also possible
that you
have
not
followed the
instructions
correctly.
If you
can't
solve the problem, take the
unit
in
to
your local Radio Shack. We'll
have it fixed and
returned to you ASAP!
Symptom
Possible Cause. Cure.
The
Cass? message does not appear
when you
turn
on the Computer.
1
.
No AC
power. Check power
cord
connection to Computer
and all
peripherals.
2. Incorrect power-up
sequence.
3
.
Peripheral device
(e.g.,
printer) is
not connected
properly. Recheck
connection.
4. Disk
system. To operate
without
a
TRSDOS diskette,
hold down
(BREAK)
while
you
reset
or power
on
.
5. Video Display
needs adjustment.
Check Brightness
and Contrast
controls.
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