IBM 6580 User Manual

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A variation in return codes of the
drives indicates head alignments
are not identical. A variation of
not more than one, for example +1
and
0 or 0 and -1, is generally
acceptable.
If the variation between the
drives is more than one, for exam-
ple +1 and -1, the head alignment
is not acceptable and must be
adjusted to reduce the variation
to one or less. Adjustments
should be performed on the small-
est group of like return codes.
The diskette drive problems iden-
tified are he~d al ignment, head
sensitivity, and stepper mechanism
problems. If the head alignmeht
is beyond the +1 or -1 range, a
prompt will reference the head
alignment adjustment in this PSM
and the MIM. When head sensitiv-
ity or stepper mechanism problems
are found, the prompt will refer-
ence a MAP.
Unexpected diskette failures can
occur during this test. If this
occurs, a prompt to re-run the
test is displayed.
Field Engineering Service
N umber/Release Version Modification
(FESN/RVM)
The FESN/RVM utility is selecte4 from
the GROUP SELECTION Menu to identify
and check the level of the customer
program diskette. When the utility is
selected and the program diskette is
loaded, the program' diskette name,
spelling support ,the FESN, and the
RVM are displayed (Figure 9-30).
The FESN and RVM are used to call
report software problems and are
recorded on the I/PAR when a software
problem is found.
C. E. Diagnostics
CED201 lA9AIA
DISKE'ITE
Textpack 2 (IPL) U.S. English
FESN
xxxxxxx
~lelDory xxxx
Kyb xxx
RVM
xxx
Figure 9-30. FESN/RVM Utility
System Exerciser
The system exerciser is a system func-
tional check which runs the system
devices concurrently. It operates the
processor in more than a one level
program processing mode. It also
operates all devices in the interrupt
mode as they would operate in the
operator mode.
When the system exerciser is selected
from the FUNCTION SELECTION Menu, it
starts to test the system. This sys-
tem centers the printer carrier on the
writing line, so the operator may pre-
pare the printer. After preparing the
printer, the operator presses ENTER.
The frame shown in Figure 9-31 appears
on the display while the system
exerciser is operating. This frame
will vary depending on which devices
are att~c~ed to the system.
An optio~al keyboard test is available
to the operator or CSR. The keyboard
may be tested anytime during the test.
Chapter 9. Diagnostics 9-33

IBM 6580 Specifications

General

Brand	IBM
Model	6580
Category	Desktop
Language	English