IBM 25R0012 User Guide - Page 27

Operating, Drive

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Operating the Drive Operating the drive involves using the following front panel items: v Single-character Display (SCD) v SCD Dot v Status Light v Unload Button Single-character Display (SCD) The SCD (see 3 in Figure 2) presents a single-character code for: v Error conditions and informational messages: "Error Codes and Messages" on page 45 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. v Diagnostic or maintenance functions (while in maintenance mode only): "Diagnostic and Maintenance Functions" on page 15 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 "Function Code 5: Copy Drive Dump" on page 19. The SCD Dot turns off when you obtain the dump (by using an FMR tape, a SCSI command, or a library command). Status Light The Status Light ( 1 in Figure 2) is a light-emitting diode (LED) that provides information about the state of the drive. The light can be green or amber, and (when lit) solid or flashing. The table below lists the conditions of the Status Light and Single-character Display (SCD) and provides an explanation of what each condition means. Table 1. Meaning of Status Light and Single-character Display (SCD) If the Status Light is... Off Green Flashing Green and the SCD is... Off Off Off Meaning The drive has no power or is powered off. The drive is powered on and in an idle state. The drive is reading from the tape, writing to the tape, rewinding the tape, locating data on the tape, loading the tape, or unloading the tape. © Copyright IBM Corp. 2005 11

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Operating
the
Drive
Operating
the
drive
involves
using
the
following
front
panel
items:
v
Single-character
Display
(SCD)
v
SCD
Dot
v
Status
Light
v
Unload
Button
Single-character
Display
(SCD)
The
SCD
(see
±3²
in
Figure
2)
presents
a
single-character
code
for:
v
Error
conditions
and
informational
messages:
“Error
Codes
and
Messages”
on
page
45
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.
v
Diagnostic
or
maintenance
functions
(while
in
maintenance
mode
only):
“Diagnostic
and
Maintenance
Functions”
on
page
15
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
“Function
Code
5:
Copy
Drive
Dump”
on
page
19.
The
SCD
Dot
turns
off
when
you
obtain
the
dump
(by
using
an
FMR
tape,
a
SCSI
command,
or
a
library
command).
Status
Light
The
Status
Light
(
±1²
in
Figure
2)
is
a
light-emitting
diode
(LED)
that
provides
information
about
the
state
of
the
drive.
The
light
can
be
green
or
amber,
and
(when
lit)
solid
or
flashing.
The
table
below
lists
the
conditions
of
the
Status
Light
and
Single-character
Display
(SCD)
and
provides
an
explanation
of
what
each
condition
means.
Table
1.
Meaning
of
Status
Light
and
Single-character
Display
(SCD)
If
the
Status
Light
is...
and
the
SCD
is...
Meaning
Off
Off
The
drive
has
no
power
or
is
powered
off.
Green
Off
The
drive
is
powered
on
and
in
an
idle
state.
Flashing
Green
Off
The
drive
is
reading
from
the
tape,
writing
to
the
tape,
rewinding
the
tape,
locating
data
on
the
tape,
loading
the
tape,
or
unloading
the
tape.
©
Copyright
IBM
Corp.
2005
11