Specifications

Screen Messages
If you press the RETURN key without having entered an appropriate
command you may see any one of several messages on the screen
e.g., SYNTAX ERROR). These messages are the computer's way of
telling you that it doesn't have enough information to act on. In most
cases the messages are self-explanatory, but in some cases you
may need a more detailed explanation of the message. Appendices
A and B of the Commodore 128D SYSTEM GUIDE list the error mes
sages for the Commodore 128.
If You Have A Problem..
If the screen display is not clear, try adjusting the controls on your
television set or monitor. You may not get a picture at all if your con
trol settings or connections are not correct. In such a case you
should check all your settings and connections. Often the TV may
simply be tuned to the wrong channel, or you may have the bright
ness turned off.
Make sure that the keys on the keyboard are in the proper position.
Normally, the SHIFT LOCK, CAPS LOCK and 40/80 keys should not
be depressed. If they are depressed you may get no picture at all, or
the symbols on the screen may look strange.
The Troubleshooting Chart shown on the following pages lists some
of the more common problems and tells how to correct them.
If you check the connections and you still can't get the com
puter to work, call CUSTOMER SUPPORT:
[phone]
Commodore CUSTOMER SERVICE personnel at this number will
help you find and correct the problem. If the problem cannot be cor
rected over the phone, you will be given the number of the Commo
dore service facility nearest you. Commodore has over 750 indepen
dent companies, including the RCA Service Company, ready to
provide nationwide service and maintenance for your Commodore
equipment.
Most set-up and start-up problems are simple and can be diagnosed
over the phone. By calling CUSTOMER SUPPORT, you can probably
avoid an unnecessary trip to the service facility. More important, you
can continue to use your equipment.
Remember—Call the CUSTOMER SUPPORT number before you
take any equipment in for warranty service.