IBM 3274 User Manual page 30

Ref
o
D
IJ
III
Alt IML
7
Address
o
II
8421
0000
IML
D
o
t
D D
Description
On/Off switch:
I
=
On;
0=
Off.
On indicator: Indicates the 3274 is powered on.
IML \initial Machine Load) pushbutton: Pressing and holding causes a
basic assurance test to run. When the pushbutton is released, IML
tests start. At completion, the machine is loaded.
II
Alt IML Address switch:
• Position 1: Holding, while momentarily pressing the IML pushbutton,
bypasses the IML tests and loads the machine directly. Use only after
normal IML fails.
• Position 2: Holding, while pressing the IML pushbutton, causes
extended remote interface tests to run (not operational if locally
attached).
8 4 2 1 indicators: These light while the IML pushbutton is held.
During IML, they follow the test sequence. At completion, they all
go out. During operation, they indicate operational status.
Figure 1-8. 3274 ModellC, 21C, 31C, or 41C Operator Panel without the
Integrated Modem Feature
Section
1.
Operator Information
1-19