Host Interface

The ODD also does not support the following functions which are not supported by ATAPI devices.

!

!

SMART feature set

Host Protected Area feature set

4.4.9 LED Indications

The ODD notifies the operator of a serious error by turning on or blinking the LED lamp. Table 4.16 lists indication modes and operation.

 

Table 4.16 LED indications

 

 

LED blink cycle

Operation

 

 

 

Off

 

Command wait state

 

 

 

On

 

Command processing

 

 

 

 

 

Seek operation

 

 

 

 

 

Read/write processing (including cache processing)

 

 

 

 

 

Formatting

 

 

 

 

 

Power-on diagnostics

 

 

 

 

 

Spinning up (Including return from standby mode)

 

 

 

 

 

Spinning down (Including shifting to standby mode)

 

 

Blinking (on for 0.1 second and off

Starting the download only firmware (*1)

for 0.7 seconds repeatedly)

 

 

 

Blinking (on for 0.1 second and off

A power-on diagnostics error occurred.

for 0.1 second repeatedly)

 

 

 

Blinking (on for 0.4 seconds and off

A thermal alarm occurred.

for 0.4 seconds repeatedly)

 

 

 

Blinking (on for 0.1 second and off

An error occurred during writing to the WRITE cache (*2)

for 0.3 seconds repeatedly)

 

 

 

 

*1

The ODD control firmware is stored on the flash ROM and can be

 

downloaded from the host with the WRITE BUFFER command. However,

 

if any problem occurs during downloading, such as power failure,

 

downloading is interrupted and the microcodes in the control firmware may

 

be damaged. To download microcode data again in such a case, the ODD

 

starts the emergency download firmware that simply supports only the

 

WRITE BUFFER command and other basic commands.

*2

The blinking of the LED for the error during writing to the WRITE cache is

 

cancelled by ejecting the media.

4-20

C156-E205-01EN

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Fujitsu MCJ3230AP manual LED Indications, LED indications