Chapter
3.
Operating
the
Drive
Operating
the
drive
involves
using
the
following
front
panel
items:
v
Single-character
Display
(SCD)
v
SCD
Dot
v
Ready
and
Fault
Status
Lights
v
Unload
Button
Operating
modes
The
drive
functions
in
the
following
modes:
v
Operation
mode
-
functions
include
reading
and
writing
data,
cartridge
manipulation,
error
reporting,
and
firmware
updating
using
an
FMR
cartridge.
For
more
information,
see
v
Maintenance
mode
-
functions
include
drive
diagnostic,
creation/unmake
FMR
cartridge,
and
drive
dump
manipulation
(force
to
RAM,
copy
to
tape,
copy
to
flash
memory,
and
erase
flash).
For
more
information,
see
The
Unload
button
is
used
to
switch
between
modes.
For
more
information,
see
Single-character
Display
(SCD)
The
SCD
(
4
in
presents
a
single-character
code
for:
v
Error
conditions
and
informational
messages
v
Diagnostic
or
maintenance
functions
(while
in
maintenance
mode
only)
lists
the
codes
for
error
conditions
and
informational
messages.
If
multiple
errors
occur,
the
code
with
the
highest
priority
(represented
by
the
lowest
number)
displays
first.
When
the
error
is
corrected,
the
code
with
the
next
highest
priority
displays,
and
so
on
until
no
errors
remain.
lists
the
single-character
codes
that
represent
diagnostic
or
maintenance
functions.
To
initiate
a
function
the
unit
must
be
in
maintenance
mode.
The
SCD
is
blank
during
normal
operation.
SCD
Dot
If
a
drive
dump
is
present
while
the
drive
is
in
maintenance
mode,
a
single
red
dot
illuminates
in
the
lower
right
corner
of
the
SCD
(
8
).
To
copy
the
dump,
see
The
SCD
Dot
is
on
solid
if
the
dump
is
in
RAM
memory.
The
SCD
Dot
flashes
if
the
dump
is
in
FLASH
memory.
The
SCD
Dot
turns
off
when
you
obtain
a
dump
(by
using
ITDT
or
a
SCSI
command)
or
update
the
drive
firmware.
©
Copyright
IBM
Corp.
2007
3-1
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