Hardware LEDs

LED Description

Power LED (green)

on	Normal: Timed shutdown timer has not been activated
Blink	At bootup, prior to ppc_uartd starting, Just prior to flash memory being updated
Blink Slowly	Timeed shutdown has been established

If ppc_uartd does not start for some reason (or started late due to hardware/software issues), the Power LED will continue blinking. After five minutes the DIAG LED will continuously blink 6 times (hard drive failure) and then shut the box down.

LINK/ACT LED

orange	10BASE-T
green	100BASE-TX
blue	1000BASE-T (Kurobox HG only)

DISK FULL LED (red)

on	Disk full
blink	Writing to flash memory

DIAG LED (red)

3 times blink	Partition warning: /dev/hda3 is not mounted on /mnt. You can ignore it.
4 times blink	Problem with the cooling fan - probably rotor jammed.
5 times blink	Problem with the flash memory*
6 times blink	Hard drive not found. Or ppc_uartd is not running.
7 times blink	Problem with the RAM/LAN/HDD controller.
blink many times	Writing to flash memory.

* It may be possible to recover from a flash memory error by pulling out power cord and trying again after one night.

Table copied from http://www.yamasita.jp/linkstation.en/led.html with minor rewording. nobuakiy helped with the translation.

Notes Users have reported problems when the drive already has a Linux partition on it - the diag light blinks 6 times. The solution appears to be to simply to reformat the drive.