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IBM 7426 Manual page 11

Terminal interface unit

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6
Testing Port 1
0
Loosen the retaining screws of the test plug
in port 0.
0
Remove the test plug from port 0 and insert
it in port 1.
0
Tighten the retainer screws.
0
Press the lnit/Test switch to Test (right).
ls the Test Mode lamp blinking and the Machine
Check lamp out (after 3 seconds)?
YES
NO
1
ls this the first time you have reached
this step?
YES
NO
1
0
Notify your supervisor
and retu rn the 7 426 to
IBM (see Chapter 5).
0
Press the Power Switch to OFF
(0).
0
Move the test plug from port 1 to
port 0.
0
Restart Procedure 4, Powering On.
0
Go to Procedure 7.
//
Retainer Screws
Chapter 1. Setup
1
nstructions 1-7

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