Technical information

Red
Yellow
Green
Off
Off
On
The ACU and its partner are running duplexed.
Red
Yellow
Green
Off
Off
Off
The system is not receiving power.
3.2.2 Disk Drives
3.2.2.1 Disk Drive Status LED
Color State Meaning
Red
Green
Off
On
Disk is active.
Red
Green
On
Off
This is a faulty disk drive.
Red
Green
On
On
The disk drive is simplexed.
Red
Green
Off
Off
The disk drive is inactive.
3.2.2.2 Terminator Module
This unit should be located above the three fan modules on the right of each of the two disk shelf backplanes. Since
the terminator should always be in S/E mode:
The green LED over "S/E" on the right should be on
●
The green LED over "LVD" (Low Voltage Differential) should not be on.●
3.2.2.3 SES Unit Module
This unit is located above the three fan modules at the top middle of each of the two disk shelf backplanes. There is a
LED above the word "Temp", this LED is not used and should not be on. Next to "Temp" there is a "Mute" knob, this
also is not used and shouldn't be touched.
3.2.2.4 SE-SE I/O Repeater Module
This unit should be located above the three fan modules at the top left of each of the two disk shelf backplanes.
The SE-SE input unit insures that the terminator will be in SE mode. There are no LEDs to be concerned with in the
SE-SE I/O Repeater Module.
Fault Isolation
file:///H|/CSDoc/leotsg/section3.html (5 of 12) [01/12/2000 11:50:41 AM]