Exchange the Ethernet switch tray fan (Model 961)

Before you begin

CAUTION:
This assembly contains mechanical moving parts. Use care when you service this assembly. (C025)

Icon for electrostatic discharge wrist strapUse approved ESD procedures to prevent damage.

Attention:
  • This procedure is not a stand-alone procedure. Customer disruption and damage to the hardware might occur when microcode and power boundaries are not in the proper conditions for this service action.
  • If a serviceable event FRU repair directed you to this procedure, the microcode and power boundaries are already set.
  • If a serviceable event FRU repair did not direct you to this procedure, see MAP1230 Replace a FRU without using a serviceable event.
Notes:
  • All the cables and FRUs to be removed must be uniquely identified so they can be reinstalled correctly.
  • If an installed earthquake resistance kit prevents you from accessing this FRU, refer to MAP1600.
DANGER
Hazardous voltage, current, or energy levels are present inside of a component to which this label is attached. (L001)
Safety label L001

Determine rack version

Procedure

Determine the rack version.
  1. At the rear of Rack-1, observe the location of the Rack identity and Local remote switch cards. See Figure 1.
  2. Version 1, the cards are vertical and mounted to the left sidewall, go to Section-1 Rack Version 1.
  3. Version 2, the cards are horizontal and mounted to the top of the rack, go to Section-2 Rack Version 2.
Figure 1. Identifying rack version 1 versus version 2
Identifying rack version 1 versus version 2

Section-1 Rack Version 1

Remove the Ethernet switch tray fan (rack version 1)

Procedure

  1. At the rear of the rack, remove the sheet metal air baffle above the Ethernet switch tray. See Figure 2.
    1. Loosen the two screws Callout label 4 securing the air baffle to the vertical EIA rails.
    2. Lift the air baffle up to clear the two screws Callout label 4.
    3. The two sections Callout label 1 Callout label 3 of the air baffle pivot around the pin Callout label 2.
    4. Lift up section Callout label 3 slot Callout label 5 so it clears section Callout label 1 tab Callout label 6.
    5. Pivot both sections towards each other so it easily clears the cables as you take it out of the rack.
    Figure 2. Ethernet switch tray air baffle (Model 961)
    Ethernet switch tray air baffle (Model 961)
  2. Locate the fan to be replaced, as shown in Figure 3.
    Figure 3. Ethernet switch tray locations (Model 961, rack version 1)
    Ethernet tray (switches, laptop fans, power distribution assembly) locations
  3. Remove the fan, as shown in Figure 4:
    1. Unplug the cable connector to the left of the fan.
    2. Remove the two Torx T8 screws and the top bracket, then remove the fan.
    Figure 4. Ethernet switch tray fan
    Ethernet switch tray fan

Install the Ethernet switch tray fan (rack version 1)

Procedure

  1. Install the new fan.
  2. Install the top bracket and two Torx T8 screws.
  3. Connect the fan cable.
  4. Install the air baffle.
  5. Return to the procedure that sent you here.

Section-2 Rack Version 2

Remove the Ethernet switch tray fan (rack version 2)

Procedure

At the front of the rack, remove the Ethernet switch tray fan. See Figure 5.
  1. Ensure the laptop tray is fully extended out to the service position.
  2. Locate the fan to be replaced.
  3. Release the two plastic fasteners Callout label 1 and then remove the fan hold down bracket Callout label 2.
  4. Disconnect the fan cable connector.
  5. After the fan stops rotating, remove the fan.
Figure 5. Laptop tray (Model 961) (rack Version 2)
Laptop tray (Model 961) (rack Version 2)

Install the Ethernet switch tray fan (rack version 2)

Procedure

  1. Install the new fan.
  2. Connect the fan cable.
  3. Install the fan hold down bracket and secure the two plastic fasteners.
  4. Return to the procedure that sent you here.