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4. Operation
Power-Fail Handling
4.3.3.
If there is a power-fail, the SDX-560V performs the following actions, and reverts to its default configuration:
(1) The drive remains positioned at the point where the power-fail.
(2) It executes the Power-Up sequence of self-tests. (When power is restored.)
(3) If a tape is in the drive, the SDX-560V starts a LOAD sequence. The drive rewinds the tape to BOT and remains
on-line.
(4) The drive returns CHECK CONDITION status for the first command after the power-fail or Reset. The next
command from the initiator should be a REQUEST SENSE. The drive will return sense data including a sense
key that will indicate that the drive has been reset. (Sense Key/ASC/ASCQ=06/29/00)
Diagnostic and Normal Status Displays
4.3.4.
This chapter describes LED displays while the SDX-560V is starting up. When power is turned on, the SDX-560V will
go through its diagnostics to reach normal status. When a failure is detected during diagnostics, the LEDs show that
the SDX-560V is out of order and needs to be repaired.
Note: When power is turned on, the all LED on before the front panel test.
4.3.4.1.
Diagnostic Status Display
The SDX-560V starts with its Diagnostic function. This is made up of the Front Panel Test and the Kernel Test.
Front Panel Test
LED display sequence:
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
This function is for checking TAPE MOTION, CLEANING REQUEST, REPLACE TAPE LEDs and the related
circuits. No errors can be generated as this test is only for operator verification of indicator operation.
Kernel Test
After the Front Panel Test, the SDX-560V checks its internal units. When a Diagnostic error occurs, all LED flash
fast. Then the SDX-560V must be powered off. The SDX-560V will not work and should be checked or repaired
immediately.
The purpose of the diagnostic firmware to test the SDX-560V electronics for functionality. If the diagnostic request
comes from the host through IDE, then the results are reported through IDE.
If the electronics are not functioning, the diagnostic firmware tries to isolate the non-functional area to a specific
Failed Unit. Given a failure, the firmware decides on an hierarchical basis which Unit to designate as the Most
Suspect Failed Unit (MSFU). The confidence in this decision is intended to be 95%. For the details of Diagnostics,
see clause 7.2.6
4-4
TAPE
CLEANING
MOTION
REQUEST
on
on
-
-
on
on
-
-
on
-
-
on
-
-
on
-
-
on
-
-
on
-
REPLACE
TAPE
on
-
on
-
Front Panel Test
-
Kernel Test
-
on
-
-
on
-
SONY AIT-2 Turbo drive SDX-560V series Ver.1.0
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