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C156-E097-01EN 4 - 15
• If the LED on the front panel blinks continuously, an error was detected during initial self-
diagnosis. In this case, issue the REQUEST SENSE command from the initiator (host
system) to obtain sense data for error analysis.
The BUSY LED is on while the optical disk drive is executing seek,
write, or read operations. The BUSY LED is on momentarily, so it
seems as if it blinked or is off.
If the cartridge fails to be inserted, remove the cartridge and turn on
the drive power to turn the eject motor once and reinsert the
cartridge.
4.6.2 SCSI connection check
When initial operation checks out normally after the power is turned on, check whether the drive
is correctly connected to the SCSI bus from the host system. Checking the SCSI connection
depends on the host system configuration. This section describes the general procedure.
(1) Procedure
Figure 4.5 shows the recommended checking procedure.
Note:
Steps a) to c) correspond to a) to c) in Figure 4.5.
a) Issue the TEST UNIT READY command and check that the drive is connected correctly to
the SCSI bus.
b) Use the WRITE BUFFER and READ BUFFER commands to check whether the SCSI bus
operates normally. Use data whose bits change to 0 or 1 at least once. (Example: A X'00' to
X'FF'increment pattern)
c) Check whether the settings are correct. Also, make sure that the controller and drive operate
normally.