IBM 102 User Manual page 54

c. Press Start.
The printer displays
READY
and then on Models 102, 1I1, and 4I3 you may see
15 COMMUNICATIONS CHECK
CHECK CABLE
or on Models 202, 2I1, and 5I3 you may see
28 COMMUNICATIONS CHECK
CALL SYSTEM OPERATOR
While on Models 4I3 and 5I3 (when parallel or serial is the
active interface) you may see
29 LINK ERROR
Ignore these messages until you have attached the printer to
your computer. (Press Stop to turn off the alarm, if
necessary.)
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User's Guide
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