IBM 39M5657 User Guide - Page 36

Function, RS-422

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v If the copy operation fails, an error code appears in the SCD. To determine the error, locate the code inTable 9 on page 45. The tape drive unloads the tape cartridge and exits maintenance mode. Function Code 6: Run SCSI Wrap Test Approximate Run Time = 10 seconds per loop Number of Loops = This test runs until stopped by pressing the Unload Button. Function Code 6 performs a check of the SCSI circuitry from and to the SCSI connector. Note: This test requires that the drive be terminated by either the terminator on the connector or at the end of the bus. Before you select this function, disconnect the SCSI cable of the drive that is closest to the server. Then, attach the SCSI wrap plug to that SCSI connector. Attention: Customers should only attempt this step when requested by IBM service. 1. Place the drive in maintenance mode. For instructions, see "Entering Maintenance Mode" on page 15. 2. Press the Unload Button once per second until 6 appears in the SCD. (If you cycle past the desired code, press the Unload Button once per second until the code reappears.) 3. Make sure that the SCSI wrap plug is connected to one of the SCSI connectors at the rear of the drive. 4. Make sure that the drive is terminated at one of its SCSI connectors or at the SCSI bus. 5. Press and hold the Unload Button for three or more seconds, then release it to select the function. The drive automatically starts the test (one loop of which lasts for less than one second). v If no error is detected, the test will loop and begin again. To stop the loop, press the Unload Button for one second and release. When the loop ends, function code 0 temporarily appears in the Single-character Display. The drive then exits maintenance mode. Disconnect the SCSI wrap plug. v If an error is detected, the test stops, error code 8 appears in the SCD. To determine the error, locate 8 in Table 9 on page 45. To clear the error, turn the power off, then on again. Function Code 7: Run RS-422 Wrap Test This test causes the drive to perform a check of the circuitry from and to the LDI or RS-422 connector. Before selecting this function, attach an LDI or RS-422 wrap plug to the drive's LDI or RS-422 connector (in place of the LDI or RS-422 cable). Attention: Customers should only attempt this step when requested by IBM service. 1. Make sure that no cartridge is in the drive. 20 IBM 400/800GB LTO3 Tape Drive User's Guide

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v
If
the
copy
operation
fails,
an
error
code
appears
in
the
SCD.
To
determine
the
error,
locate
the
code
inTable
9
on
page
45.
The
tape
drive
unloads
the
tape
cartridge
and
exits
maintenance
mode.
Function
Code
6:
Run
SCSI
Wrap
Test
Approximate
Run
Time
=
10
seconds
per
loop
Number
of
Loops
=
This
test
runs
until
stopped
by
pressing
the
Unload
Button.
Function
Code
6
performs
a
check
of
the
SCSI
circuitry
from
and
to
the
SCSI
connector.
Note:
This
test
requires
that
the
drive
be
terminated
by
either
the
terminator
on
the
connector
or
at
the
end
of
the
bus.
Before
you
select
this
function,
disconnect
the
SCSI
cable
of
the
drive
that
is
closest
to
the
server.
Then,
attach
the
SCSI
wrap
plug
to
that
SCSI
connector.
Attention:
Customers
should
only
attempt
this
step
when
requested
by
IBM
service.
1.
Place
the
drive
in
maintenance
mode.
For
instructions,
see
“Entering
Maintenance
Mode”
on
page
15.
2.
Press
the
Unload
Button
once
per
second
until
6
appears
in
the
SCD.
(If
you
cycle
past
the
desired
code,
press
the
Unload
Button
once
per
second
until
the
code
reappears.)
3.
Make
sure
that
the
SCSI
wrap
plug
is
connected
to
one
of
the
SCSI
connectors
at
the
rear
of
the
drive.
4.
Make
sure
that
the
drive
is
terminated
at
one
of
its
SCSI
connectors
or
at
the
SCSI
bus.
5.
Press
and
hold
the
Unload
Button
for
three
or
more
seconds,
then
release
it
to
select
the
function.
The
drive
automatically
starts
the
test
(one
loop
of
which
lasts
for
less
than
one
second).
v
If
no
error
is
detected,
the
test
will
loop
and
begin
again.
To
stop
the
loop,
press
the
Unload
Button
for
one
second
and
release.
When
the
loop
ends,
function
code
0
temporarily
appears
in
the
Single-character
Display.
The
drive
then
exits
maintenance
mode.
Disconnect
the
SCSI
wrap
plug.
v
If
an
error
is
detected,
the
test
stops,
error
code
8
appears
in
the
SCD.
To
determine
the
error,
locate
8
in
Table
9
on
page
45.
To
clear
the
error,
turn
the
power
off,
then
on
again.
Function
Code
7:
Run
RS-422
Wrap
Test
This
test
causes
the
drive
to
perform
a
check
of
the
circuitry
from
and
to
the
LDI
or
RS-422
connector.
Before
selecting
this
function,
attach
an
LDI
or
RS-422
wrap
plug
to
the
drive’s
LDI
or
RS-422
connector
(in
place
of
the
LDI
or
RS-422
cable).
Attention:
Customers
should
only
attempt
this
step
when
requested
by
IBM
service.
1.
Make
sure
that
no
cartridge
is
in
the
drive.
20
IBM
400/800GB
LTO3
Tape
Drive
User’s
Guide