IBM 5280 User's Setup Manual page 142

72. Observe this display.
This display will appear for approximately 20 seconds.
Communications test in process.
l
57-02
J
~--------'"
K 1. If the top line of the display starts blinking, press the
Reset or Error Reset key. The following display will
appear:
Test Terminated.
Options are:
1. RESTART
.-, EXIT
Sel.ect option: ~)7-·79
t
J
K2. Press the number 1, then press the Enter key.
Repeat step 59 through 73. If the top line of the display
starts blinking again, record the four-digit error code
number for reference and call your service
representative.
User's Setup Procedures 135