IBM 6580 User Manual

troller and wait for the next
test selection at the end of this
test.
T Track Step Test. The diskette
must be removed from the diskette
drive before starting this test.
This test 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 MOVE key
will end the test and return con-
trol to RNA controller.
The following four looping tests are
available to isolate intermittent sys-
tem bus failures. Once started, these
tests continue to execute until an
error is found or the END key is
pressed. When an error is found, a
short tone is heard and an "F" will
appear in the test results field.
When the END key is pressed, the sys-
tem returns to the RNA test selection
mode.
P Looping ROS CRC Test. This test
checks the ROS on the processor
card in the same way the BAT
does.
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.
9-12 IBM Displaywriter Product Sapport Manual

IBM 6580 Specifications

General

Brand	IBM
Model	6580
Category	Desktop
Language	English