Juniper Networks M10i manual Removing and Inserting Sdram Modules, Removing a Sdram Module

Chapter 13: Replacing Hardware Components

The internal compact flash disk will now be the primary boot device.

4.You can verify correct boot order by issuing the show system boot-messagescommand. The output lists the devices mounted. The internal compact flash disk is located at ad0.

For more information about the command, see the JUNOS System Basics and Services Command Reference.

Removing and Inserting SDRAM Modules

The SDRAM installed on the Routing Engine provides storage for the routing and forwarding tables and for other Routing Engine processes. The design of the Routing Engine allows you to modify the SDRAM configuration by adding DIMM memory modules to or removing modules from the Routing Engine board. The Routing Engine contains from one to three 168-pin DIMMs.

To modify the SDRAM configuration, use the following procedures:

■Removing a SDRAM Module on page 129

■Inserting a SDRAM Module on page 129

Removing a SDRAM Module

The SDRAM modules are located on the top of the Routing Engine. To remove a

SDRAM module, follow this procedure:

1.Place an electrostatic bag or antistatic mat on a flat, stable surface.

2.Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 140.

3.Remove the Routing Engine as described in “Removing a Routing Engine” on page 121.

4.To release the SDRAM module, press the plastic ejectors on both sides of the module.

5.Grasp the SDRAM module, being careful not to touch any electrical components on the module, and firmly pull it out of the slot on the Routing Engine.

6.Place the SDRAM module on the antistatic mat or in the electrostatic bag.

7.Push the plastic ejectors to close the empty SDRAM module slot.

Inserting a SDRAM Module

To insert a SDRAM module onto the Routing Engine, follow this procedure (see

Figure 51):

Replacing Routing Engine Components ■ 129