Fujitsu MCM3064AP, MCM3130AP manual LED Indications, 16 LED indications, Host Interface

Models: MCM3130AP MCM3064AP

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4.4.8 LED Indications

Host Interface

4.4.8 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 1 second and off for

Starting the download only firmware (*1)

1 second repeatedly)

 

 

 

 

Blinking (on for 0.25 seconds and off

A power-on diagnostics error occurred.

for 0.25 seconds repeatedly)

 

 

 

Blinking (on for 0.5 seconds and off

A thermal alarm occurred.

for 0.5 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.

4-22

C156-E227-01EN

Page 92
Image 92
Fujitsu MCM3064AP, MCM3130AP manual LED Indications, 16 LED indications, Host Interface