ETERNUS JX40 disk storage system Periphery
32 U41861-J-Z126-1-76
The status LEDs of the SAS I/O module are located in the upper part of the device.
Status LEDs of the power supply units
The status LEDs of the power supply units are located in the lower part of the devices (see
figure 12 on page 31).
4.1.3 Problem Solutions and Tips
When operation is disrupted, please notify Customer Support. On no account should you
attempt to make repairs yourself! The following sections describe irregularities which can
be observed on the disk storage subsystem in case of faults.
Power supply status LED (front)
If the power supply status LED is green the device is switched on and the power supply and
at least one power supply unit are OK. When the power supply status LED remains dark,
the power supply units may be defective:
Ê Check the power supply units’ LEDs.
Identification status LED
When the identification status LED is on, this means this LED was switched on to identify
the system. There is no fault.
LED Color Status Meaning
UNIT ID LED
Identification status
Blue Blinking Identification
SAS OUT LED / SAS IN LED
Link/Fault
Green On Link up
Yellow On Error detected, notify Customer
Support
Status/Fault LED
Error status
Green On Normal operation
Yellow
On Error detected, notify Customer
Support
LED Color Status Meaning
Status/Fault LED
Error status
Green On Normal operation
Blinking Stand by
Yellow On Error detected, notify Customer Support
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