Dell PowerVault TL4000 - Manual (Page 184)

Table 7-2. Power Supply LED Meanings
1 If the blue LED is lit, AC voltage is available.
2 If the amber LED is lit, there is a possible fan problem or other power supply
issue. The power supply will need replacement.
3 If the green LED is lit, DC power is OK and active.
4 Cooling Fan Grill
5 Thumb Screws
6 Power Receptacle
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3
6
1
3
4
6
2
5
Figure 7-1. A 250w power supply with LEDs
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9
8
4
6
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Figure 7-2. A 80w power supply without LEDs
7-8 Dell PowerVault TL2000 Tape Library and TL4000 Tape Library User's Guide