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5
Testing Port 0
Note:
DO NOT turn the power off any time
during these Sf/tup instructions. All ports must be
tested in sequential order.
O
Connect test plug PN 2720166 to port 0.
O
Tighten the test plug retainer screws by
turning them clockwise ( / \ ).
0
Press the lnit/Test switch to Test (right).
ls the Test Mode lamp blinking and the Machine
Check lamp out
(~fter
3 seconds)?
YES
NO
1
ls this the first time you have reached
this step?
YES
NO
1
O
Notify your supervisor
and, return the 7426 to
IBM (see Chapter 5).
0
Press the Power Switch to OFF
(0)
and restart Procedure
4,
Powering
On.
0
Go to Procedure 6.
1-6
Retainer
Screws
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