User`s guide

Chapter 3 Troubleshooting Your Library
Interpreting LEDs
Scalar i6000 User’s Guide 101
Figure 22 shows the locations and colors of the power supply LEDs.
Figure 22 Locations and
Colors of Power Supply LEDs
power supply LEDs
- top (AC OK) = green
- middle (DC OK) = green
- bottom (FAULT) = blue
Table 17 describes how to interpret LED activity that you might see.
Table 17 Explanation of Power
Supply LED States
LED Color Represents Possible States and Explanations
Green
(top LED)
AC OK • Solid on — power supply’s AC input is above minimum
re
quirements to operate
• Solid off — power supply’s AC input is below minimum
re
quirements to operate
Green
(middle
LE
D)
DC OK • Solid on — power supply’s output vol
tage is within specifications
• Solid off — power supply’s output voltage is outside of specifications