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System/370
Model 115 and Model 125
Sources: GA33-1510 Systeml370 Model
115
Functional Characteristics
GA33-1509 Systeml370 Model
125
Procedures
Power-On Procedure
DANGER: Before switching on power, ensure that no person is exposed to risk and
that all equipment covers are shut.
1.
Ensure system diskette is inserted in console file.
2.
Press POWER ON. Red light comes on.
3.
IMPL is automatic if diskette is loaded as described in step 1. If not, wait
30 seconds for white light on POWER ON before IMPLing.
Power-Off Procedure
Before removing power:
1.
Issue any special commands your operating system requires.
2.
Unload tape units and disk drives.
3.
Perform 'save usage counters' if needed.
4.
Press POWER OFF. The Power·On key turns from white to red, then goes
out.
To IMPL
1.
Place Control diskette in the 33FD.
2.
Press IMPL key. This loads all microprograms from the console file into
subprocessors which have loadable control storages. A malfunction in the
console file causes the File Check light to turn on.
3.
During IMPL, 'IMPL IN PROGRESS' appears on the video screen.
4.
'SUCCESSFULLY LOADED' appears when loading is finished. The next
message, 'PROGRAM LOAD', is the signal to begin the IPL procedure.
To IPL for First Time after Power-On
1.
Key in specifications as soon as PROGRAM LOAD is displayed on line 13 of
the screen.
2.
Press ENTER.
NOTE:
If
message
'IPL ERROR' or 'EC PSW ERR' appears on line 13 of
the screen, reload with correct program. Press ENTER.
3.
Proceed with usual operating procedures. Check for normal states across
entire system.
4.
Assign devices and start running jobs.
To Re-IPL
1.
In order to get the PROGRAM LOAD display, press MODE SEL, key in L,
and press ENTER. Specifications from the last IPL will be displayed.
2.
If the specifications are to remain the same, press ENTER. If not, make
changes and press ENTER.
3.
Proceed with usual operating procedures. Check for normal states across
entire system.
4.
Assign devices and start running jobs.
Page 3-3
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