LaCie 12big Rack Network
Troubleshooting & Problem Solving
User Manual
page 27
4.2. LED States
Green LEDs are always used for good or positive indication, flash-
ing Green/Amber if non-critical conditions exist. Red or Amber LEDs
indicate there is a critical fault present within the module; with the
exception of the Drive Carrier Module LED which is lit Amber under
Normal conditions (see section
4.6. Drive Carrier Module Faults
).
4.2.1. Power Supply Unit LEDs
Under Normal conditions the bi-color Power On LEDs will be illumi-
nated constant GREEN. When a fault occurs the Power On LEDs will
be illuminated constant RED.
Table 07 - PSU LED States
Status
Condition
Definition
Green
(Flashing)
+3V3SB – ON;
+12VOUT – OFF; AC
PRESENT
Mains supply con-
nection to PSU
present
Green
+3V3SB – ON,
+12VOUT – ON
PSU power switched
ON
Red
(Flashing)
+12V_OCP, +12V_
UVP, +12VOVP
Over Current/Under
Voltage/Over Volt-
age Protection
Red
(PSU) FAN_FAULT,
OTP, 3V3 OCP/UVP
Fault present
4.2.2. Ops Panel LEDs
The Ops Panel (
Fig. 17
) displays the aggregated status of all the
modules. The Ops Panel LEDs are defined in
Table 08
.
NOTE:
The Ops Panel is supplied as an integral part of the enclo-
sure core product and is not user replaceable.
Table 08 - Ops Panel LED States
Status
Condition
Definition
Power Active
Constant Green: good
or positive indication.
Unit Fault
OFF
Constant Amber:
fault present
Enclosure ID
Blue: only when activated
Fig. 17 - Ops Panel LEDs
