Name: Cisco 3825 Series
Brand: Cisco
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Installing and Upgrading Fans in the Cisco 3825 Series Routers

78-18642-01B0

Upgrading the Cisco 3825 Fan Unit

Step 1 Lower the fan unit down and onto the chassis floor.

Step 2 Attach fan 1 to the J4 connector on the motherboard. (See number 1 and 2 in Figure 7.)

Figure 7 Attaching Fan Cable to the J Connectors

Step 3

Attach fan 2 to the J18 connector on the motherboard. (See number 3 and 4 in Figure 7.)

Step 4 Attach fan 3 to the J25 connector on the motherboard. (See number 5 and 6 in Figure 7.)

Caution Orient the fan connectors correctly before you insert them. Incorrect orientation can damage the

connector pins.

Step 5 Reinstall the two screws on the front of the chassis. (See Figure 6 on page 16.)

Step 6 Reinstall the four screws on the side of the chassis. (See Figure 5 on page 15.)

Step 7 Reinstall the two screws on the top of the fan unit. (See Figure 4 on page 15.)

1 Fan 1 2 Fan 1 to J4 connector

3 Fan 2 4 Fan 2 to J18 connector

5 Fan 3 6 Fan 3 to J25 connector

1 2 43 65

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Cisco 3825 Series Specifications

General