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4. Simultaneously rotate the ejector handles counterclockwise to unseat the SCB.
5. Grasp the ejector handles and slide the SCB about halfway out of the chassis.
6. Place one hand underneath the SCB to support it and slide it completely out of
the chassis. Place it on the antistatic mat.
CAUTION: Do not stack hardware components on one another after you remove
them. Place each component on an antistatic mat resting on a stable, flat surface.
7. Repeat the procedure for the second SCB.
Figure 67: Removing an SCB
Removing DPCs
The router holds up to three DPCs, which are installed horizontally in the front of
the router. A DPC weighs 13.1 lb (5.9 kg). Be prepared to accept its full weight.
To remove a DPC (see Figure 68 on page 191):
1. Have ready an antistatic mat for the DPC. Also have ready rubber safety caps
for each DPC using an optical interface on the DPC that you are removing.
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. For more information
about ESD, see “Preventing Electrostatic Discharge Damage” on page 130.
3. Simultaneously turn both the ejector handles counterclockwise to unseat the
DPC.
4. Grasp the handles and slide the DPC straight out of the card cage halfway.
5. Place one hand around the front of the DPC and the other hand under it to
support it. Slide the DPC completely out of the chassis, and place it on the
antistatic mat or in the electrostatic bag.
190 ■ Removing Components from the Chassis
MX240 Ethernet Services Router Hardware Guide