Led Indications; Table 4.16 Led Indications - Fujitsu MCM3064AP Product Manual

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.
LED blink cycle
Off
On
Blinking (on for 1 second and off for
1 second repeatedly)
Blinking (on for 0.25 seconds and off
for 0.25 seconds repeatedly)
Blinking (on for 0.5 seconds and off
for 0.5 seconds repeatedly)
*1
4-22

Table 4.16 LED indications

Command wait state
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)
Starting the download only firmware (*1)
A power-on diagnostics error occurred.
A thermal alarm occurred.
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.
Operation
C156-E227-01EN