Instruction manual
Exchanging a Fan-and-Power-Supply Assembly
You can exchange a faulty fan-and-power-supply assembly if:
v You have a correct spare fan-and-power-supply assembly or fan assembly.
v Another fan-and-power-supply assembly is still present in the 2104.
Note: If your 2104 contains just one fan-and-power-supply assembly (and one fan
assembly), refer to Expandable Storage Plus: 2104 Models DU3 and TU3
Service Guide for more guidance about replacing the fan-and-power-supply
assembly.
You do not need to remove power from the 2104 when exchanging a
fan-and-power-supply assembly.
Before Exchanging a Fan-and-Power-Supply Assembly
v Check the lights on this fan-and-power-supply assembly (“Fan-and-Power-Supply
Assembly and Fan Assembly Lights and Switch” on page 11 describes these lights
and how to see them.). Ensure that the DC On/Standby switch is set to On.
If the CHK light is on, exchange the fan-and-power-supply assembly by using the
procedure in the following section.
Figure 33. A Fan-and-Power-Supply Assembly
Chapter 3. Exchanging FRUs 45