IBM 3274 User Manual page 115

Procedure 17:
II
Symbol Check with a 3299 in the
Network
Look at any of the powered-on display stations. For an IBM
3270 Personal Computer Attachment, ensure that the Personal
Computer is set in the correct mode for attaching it to the
3274.
001
Is a
II
symbol displayed in the lower left corner of the
operator information area?
Y N
003
I
002
If all attached displays fail, go to Procedure 11 on page
2-28. If a single display is failing, go to Procedure 20 on
page 2-46.
Is an)(
~
(machine check) symbol followed by a 3-digit
code
(nnn
code) displayed in the operator information
area?
Y N
I
004
Go to Procedure 18 on page 2-42.
005
Set the display unit Normal/Test switch to Test, then to
Normal, or turn power off, then on, and wait up to 2 minutes,
whichever is appropriate. Press the RESET key, and retry the
operation. (See the note at the end of this procedure.)
Does the display station still fail?
Y N
I
006
Resume operation.
007
Go to Procedure 20 on page 2-46.
2-40