Service Manual
JetStor SAS 742F
7
Problem
What to do / What to Replace
Some or all HDD LEDs
(Activity LEDs and Power
On/Fail LED) on front panel do
not light up after power on.
1. Check first if the RAID controller(s) can
start-up normally (not hang). If
controller(s) cannot boot-up normally,
check the RAID controller(s).
2. Make sure all expander modules are
working fine. If there is a failed
expander module, check or replace it
first. Refer to Section 10.
3. If the RAID controller(s) can start-up
normally, check if the switch cable and
LCD cable are properly connected to the
LED front panel module. Refer to
Section 1 step E and F.
4. Check if there disk drive in the
particular slot in which HDD LED does
not light up. Try to move the disk drive
in another slot and see if the HDD LED
will light up. And try another disk drive
in the particular slot with HDD LED not
working.
5. If the disk drive is detected in RAID
Manager GUI in the particular slot, but
the HDD LED still has problem, replace
the LED front panel module. Refer to
Section 1.
