Specifications

Page 7-1
1770-805
Section 7
TROUBLESHOOTING
7.0 GENERAL
This section contains information on trouble-
shooting the Industrial Terminal System.
7.1 DIAGNOSTICS
The Industrial Terminal System performs self-
diagnostics at power up. If a problem is found,
a FAULT diagnostic prompt will be displayed
and a continuous beep tone will be generated
to alert the user of a problem. If the Industrial
Terminal System cannot display a FAULT
prompt, a continuous beep tone will still be
generated.
If a "COMMUNICATION FAULT" message
appears,
cycle power to the Industrial Termi-
nal System (turn Industrial Terminal power
switch OFF, then ON). If the "COMMUNICA-
TION FAULT" message still appears, turn
Industrial Terminal power switch OFF, dis-
connect and reconnect the cable to its Chan-
nel socket, and turn the Industrial Terminal
power switch ON.
If you find a problem with your Industrial
Terminal System that cannot be resolved,
contact your local Allen-Bradley Sales Repre-
sentative.
1'.2 TEST PLUG
The CRT Troubleshooting Test Plug (Cat. No.
177
4- TT) can be used to verify proper opera-
tion of the keyboard. Plug the Test Plug into
CHANNEL B, and select ALPHANUMERIC
mode. Select full duplex from the Alphanu-
meric Options menu. Type on the keyboard. If
the Industrial Terminal's keyboard circuits are
functioning properly, whatever is typed should
be displayed on the screen. It is still possible
to have a problem that would not be detected
by using the Test Plug. For the best possible
test, exercise each key which causes a charac-
ter to be displayed on the screen. If the Test
Plug causes characters other than those
pressed to be displayed, remove and insert the
keyboard and repeat the procedure.
If still unsuccessful, contact your local Allen-
Bradley Sales Representative.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com