Cisco 3745 Przewodnik Instalacji Pobierz pdf (Strona 21)

Installing Field-Replaceable Units in Cisco 3745 Routers

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Replacing the Cisco 3745 Router Mainboard Tray

Removing the Mainboard Tray

To remove the mainboard tray, perform the following steps:

Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the

equipment end of the wrist strap to the metal backplate of the chassis, avoiding contact with the

connectors.

Step 2 Turn off the power and unplug the power cord.

Caution Be sure that all power supplies are powered off and that all LEDs are off.

Step 3 Place the router on a flat surface so that the front panel faces you, and open the small access door at the

right-hand edge of the fan tray.

Step 4 Loosen the two captive screws located behind the access door. (See Figure 6.)

Step 5 Open the fan tray to the straight-out position and lift it off its hinges. (See Figure 7, numbers 1 and 2.)

Step 6 Loosen the captive retention screws; there is one at each side of the mainboard. (See Figure 14.)

Step 7 Pull the ejector levers at both sides, and carefully pull the mainboard straight out of the chassis. Place it

on an antistatic surface.

Figure 14 Removing the Mainboard from a Cisco 3745 Router

62489

Captive

retention

screw

Ejector levers

Captive

retention

screw

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Cisco 3745 Przewodnik Instalacji Strona 21