Dell PowerVault ML6000, Maintenance Manual

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200 Troubleshooting the Tape Library
T005
T005 - X, Y, Theta Motion Profile Failure, Tape in Picker, Motion NOT OK
Description GUI Description: The robot failed to move a tape cartridge due to an axis
motion problem.
Explanation: An X, Y, Theta (
θ)
motion failure occurred that cannot be
considered a complete obstruction. This problem only occurs during a move
and NOT a get or put. Because the tape cartridge is in the picker, tape
cartridge recovery must be a part of the resolution strategy. This ticket cause
specifically excludes any Z axis motion failures that are typically associated
with get or put actions. Specifically included are motion failures that occur
while pivoting, moving on the X-axis, or moving on the Y-axis.
Detection Scenarios • A specified move in the X-axis cannot complete.
• A specified move in the Y-axis cannot complete.
• A specified movement in the Theta (
θ)
axis cannot complete.
Root Causes • A large number of electrical hardware failures. Code or hardware detects
that motion control is not occurring properly (encoder issues, motor driving
circuit issues, motor winding issues, cable connections issues, etc.).
• A relatively small number of mechanical hardware errors that do not result
in the detection of a complete obstruction, but where motion control does not
appear to be normal (contamination or damage to encoder wheel, high
friction, etc).
Service Resolution
Steps 1 Perform DR005 - Resolve Motion Failure on page 368.
2 Open the main door and inspect the picker path to ensure that no
obstructions are visible. Check the Y-climber and picker for any packaging
material still left in place. Remove any media in the picker, clear the RAS
ticket, and retry the original operation. If using library firmware 400G or later,
run an IVT - Robot test through the Library Tests option in the operator
panel.
Note: IVT is optimized for library firmware versions 520G and above and
libraries built after July 1, 2008 (serial numbers with last four digits 8602 and
above).
• If your library was built on or before July 1, 2008, and you are running
firmware version 520G or later, you will not be able to run the IVT test, even
though the selection is available.
• If your library was built on or before July 1, 2008, and you are running
firmware version 500G or earlier, you can run the test, but it is not
recommended because it may produce erroneous results.
Possible CRUs/FRUs Note: Read and perform all resolution steps before dispatching any parts.
Dispatch the first part listed below for replacement. If this does not solve the
problem, dispatch the second part, and so on, in order. Dispatch only one part
(or set of parts) at a time.
1 Picker Assembly (if Model 1 robot is installed) or
Robot Assembly (if Model 2 robot is installed)
2 Y-carriage Assembly (if Model 1 robot is installed)
3 Cable Spool