Automatic System Checkout Program (Ascp) - IBM System/370 145 Operating Procedures Manual

AUTOMATIC SYSTEM CHECKOUT PROGRAM
(ASCP)
Purpose
• Indicates the reliability of the CPU, channel(s),
and all I/O devices.
• Identifies the failing device(s), when used to investigate
a specific problem.
Prerequisites
• A completely dedicated system is needed. ASCP does
not run under control of an operating system.
• A good *370 microprogram disk I MPL operation must
precede.
• Only devices made ready are tested by ASCP.
• "Scratch" or work tapes or disks should be used for
testing.
The I/O devices that can be configurated and tested by
ASCP are:
Disk File and Drum Storage:
2303,2305,2311,2314,2319,2321,3330
Magnetic Tape:
2400,2415,2420,3420
Punch Card I/O:
1442Nl,2501,2520,2540
Printers:
1403,1443,3211
Displays:
2250,2260
Console I/O:
2702,2715,3210,3215
Magnetic Character Reader:
1259
Paper Tape I/O:
1017,1018,2671
Transmission Control Devices
2701,2702,2715
Sources
• Furnished on two console-file disks:
STF 1 and STF2. If you desire, your service repre-
sentative can generate an ASCP tape or card deck.
Run Time
• Minimum time for reliability testing is approximatel"y
three minutes. (This gives at least one reliability
printout.)
• ASCP must be terminated manually by the operator.
Program Concepts
ASCP loads from the console-file disks, tape, or cards, and
communicates with the operator via an output device (prefer-
ably a printer). All devices made ready by the operator are
tested. Reliability reports arc printed at intervals on the
selected ouptut device.
• Comparisons made with past ASCP reports may
indicate failure trends and the need for scheduling
maintenance.
• When ASCP is used to handle an abnormal situa-
tion, indicate the results to the dispatcher when
you call for service. (Make ASCP results available to
your service representative.)
• Recommended running the ASCP for reliability
checking twice weekly.
Operating Procedures 69
I