1-4
Netra t 1120/1125 Service Manual • August 1998
1.2
System LEDs
1.2.1
Netra t 1120
The front panel has seven LEDs:
POWER–Green
This indicator is illuminated at all times when the system is On.
SUPPLY A–Green
Illuminated whenever DC input A is present and the system is
powered on.
SUPPLY B–Green
Illuminated whenever DC input B is present and the system is
powered on.
SYSTEM–Green
This indicator is off (or reset) during power up procedures and is
illuminated whenever UNIX is running and the alarms driver is
installed. It is reset by a hardware Watchdog timeout or,
alternatively, whenever the user-defined Alarm 3 is asserted.
ALARM 1–Amber
Illuminated whenever the user-defined Alarm 1 is asserted.
ALARM 2–Amber
Illuminated whenever the user-defined Alarm 2 is asserted.
SPARE–Amber
For future enhancement.
FIGURE 1-5
Netra t 1120
System LEDs
ALARM 1
ALARM 2
SUPPLY A
SUPPLY B
POWER
SYSTEM
ON
STBY
Power
switch
Summary of Contents for Netra t 1120
Page 10: ...x Netra t 1120 1125 Service Manual August 1998...
Page 12: ...xii Netra t 1120 1125 Service Manual August 1998...
Page 18: ...xviii Netra t 1120 1125 Service Manual August 1998...
Page 24: ...1 6 Netra t 1120 1125 Service Manual August 1998...
Page 26: ...2 2 Netra t 1120 1125 Service Manual August 1998...
Page 58: ...5 2 Netra t 1120 1125 Service Manual August 1998...
Page 62: ...6 4 Netra t 1120 1125 Service Manual August 1998 FIGURE 6 2 System Power Off Front Panel 1125...
Page 65: ...Chapter 7 Internal Access 7 3 FIGURE 7 2 Attaching the Wrist Strap to the Rear of the Chassis...
Page 67: ...Chapter 7 Internal Access 7 5 FIGURE 7 3 Removing the Top Access Cover 1125 Screws Tab...
Page 70: ...7 8 Netra t 1120 1125 Service Manual August 1998...
Page 82: ...8 12 Netra t 1120 1125 Service Manual August 1998...
Page 85: ...Chapter 9 Storage Devices 9 3 FIGURE 9 1 Removing and Replacing a Hard Disk Drive...
Page 92: ...9 10 Netra t 1120 1125 Service Manual August 1998...
Page 122: ...10 30 Netra t 1120 1125 Service Manual August 1998...
Page 130: ...B 4 Netra t 1120 1125 Service Manual August 1998...
Page 148: ...Index 4 Service Manual August 1998...