Modem Feature - IBM 3274 User Manual

Alt IML
Address
2
~
II\~D IJ~ m~: ~D
I
Modem
=
I
Mode Data Quality
8421 10perate
~
IGOOd Poor
I
0060
1
0 0
1,00,0
Modem
Address
1----IJ:l....JJ
I
o
D
1m
o
Ref Description
o
On/Off switch:
I
=
On;
0=
Off.
o
On indicator: Indicates the 3274 is powered on.
D
IML (Initial Machine Load) pushbutton: Pressing and holding causes a
basic assurance test to run. When the pushbutton is released, 1M L
tests start. At completion, the machine is loaded. With the Integrated
Modem feature, the integrated modem self-test requires a power-on
reset to run.
D
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
remote interface tests to run.
Pressing and holding causes the integrated modem self-test to run and
to repeat approximately every 4 seconds until the switch is released.
I I
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 1-9 (Part 1 of 2). 3274 Model31C Operator Panel with the
Integrated Modem Feature
1-20
D