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IBM 7426 Manual page 41

Terminal interface unit

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7
Testing in Port 1
D
Loosen the retaining screws of the test plug in
port 0.
D
Remove the test plug from port
0
and insert it
in port 1.
D
Tighten the retainer screws.
D
Press the
1
n it/T est 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
Note the failure and go to
Procedure 8.
0
Press the Power Switch to 0 FF ( 0).
D
Move the test plug from port 1 to port
0.
0
Restart Procedure 5, Powering On.
0
Go to Procedure 8.
//
Retainer Screws
Chapter 4. Customer Problem Analysis and Resolution 4-15

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