Diagnostic Tests - IBM 6580 Product Support Manual

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DIAGNOSTICS - RNA Diagnostic Tests
RESIDENT NON-AUTOMATIC DIAGNOSTIC TESTS
The following is a description of Resident Non-Automatic
Diagnostic Tests.
D Switch To Opposite Diskette Drive: The system will
switch from one diskette drive to the other to execute
tests on a Dual Diskette Drive system. The selected
drive will default to 0 when RNA is first entered.
Each time the ENTER key is pressed while this func-
tion ID is displayed, the opposite drive will be selected.
Any drive test selected after this function is run will be
executed from the last selected drive.
F Execute BAT Once: The BAT will run once from the
start of the test. At the end of this test, the processor
will pass system control to IPL if the test is acceptable.
G Execute BAT In Loop Mode: The BAT will run
continuously in the loop mode until an error is found
or the MEMORY RECORD button is pressed. It is
only possible to get out of this mode at a specific time
during the test. This period of time is known. as the
exit window. The exit window occurs during the RAM
part of the BAT and lasts four or five seconds. The
LEOs will display 1110 continuously during the exit
window. During this time, the MEMORY RECORD
button must be pressed and released. When the test
is ended this way, the processor will return system
control to the RNA controller. The test will not
stop immediately, because it must complete the BAT
sequence.
When BAT is run from the RNA controller, the system
control goes to the BAT controller. The RNA display
will disappear, and the interface with BAT will be
through the normal BAT display formats.
L Run Diskette Drive Set Ready Test: The CE diagnostic
diskette must be loaded in the selected drive before
starting this test. This test performs in the following
sequence:
1. PORs the Diskette Adapter Cards
2. Samples the Diskette Index Pulse
3. Checks the Drive Set Ready Signal
4. Engages the ReadIWrite Head
5. Checks the Write/Erase Enable Line (This ensures
the system will not write on the customer's
diskette.)
6. Reads the Track
10
7. Disengages the Head
The system will return to RNA controller at the end of
this test.
M Diskette Stepper Motor Phase Test: The CE diagnostic
diskette must
be
loaded in the selected drive before
starting this test. This test determines if the diskette
stepper motor is operating correctly in each phase.
When an error occurs during this test, the track number
in which the error occurred will be displayed in the test
feedback field. The write/erase enable line is checked
to ensure a "write unsafe" condition is not present,
and the system will not write on the' customer's
diskette. The system will return to RNA controller at
the end of this test.
N Diskette Drive Alignment Aid: The diskette must be
removed from the diskette drive before starting this
test. This test is used with an adjustment procedure to
ensure the read/write head is correctly aligned. The
adjustment procedure is described in the Diskette Drive
section of this manual. When the ENTER key is
pressed, the head is positioned to track 40, and press-
ing the spacebar will cause the read/write head to step
between tracks 39 and 40. Pressing the END key will
end this test, and the system will return to RNA
controller.
T Track Step Test: The diskette must be removed from
the diskette drive before starting this test which is used
to track step the diskette drive from track 0 to track
76. When this test is running, pressing the spacebar
will cause a track step up. If the head is in track 76, it
will not move. Pressing the END key will end the test
and return control to RNA controller.
P Looping ROS CRC Test: Checks the ROS on the
Processor Card.
Q
Looping Display Path Test: Checks the Display
Adapter RAM.
R Looping Base RAM Test: Checks the system RAM
contained on the Memory Card. The display is blank
while this test is running.
S Looping Diskette Path Test: Checks the diskette path
with a wrap test. The display is blank while this test is
running.