Power Supply Led Meanings - IBM TS3100 Setup, Operator, And Service Manual

Figure 159. A 80w power supply without LEDs
Table 51. 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
needs replacement.
3
If the green LED is lit, DC power is OK and active.
4
Cooling Fan Grill
5
Thumb Screws
6
Power Receptacle
If the Library does not power on:
Procedure
1. With library power OFF and unplugged power cord, loosen the three thumb screws ( 5 ), grasp two
of the thumb screws, pull the power supply out half way, reseat the power supply, and tighten the
three thumb screws.
2. Ensure that the power cord is plugged in at the power supply ( 6 ) and at the electrical outlet, then
turn library power ON.
a. For power supplies with LEDs, the "Blue" LED is lit if AC power is good.
b. If your power supply does not have LEDs, feel for air that is flowing out of the cooling fan grill
on the rear of the library ( 4 ). AC is good if air is flowing from the cooling fan grill.
3. If power appears to be missing
a. Plug the power cord into another electrical outlet.
b. If power is still missing, plug another device into the outlet to test.
c. If the outlet tests OK, try another power cord with the library.
4. For power supplies with LEDs, if the "Amber" LED is lit, replace the power supply (refer to
"Replacing a power supply" on page 231).
5. If your power supply has no LEDs, and you verified that the electrical outlet works properly, but the
power supply is still failing, replace it (see "Replacing a power supply" on page 231).
4
6
5
Troubleshooting
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