Servicing the CTP2000 CPU
This topic describes how to remove the CTP2000 CPU from the chassis for service or
upgrade, and how to return the CPU to the chassis. Follow proper antistatic procedures
when you perform the following procedures.
To remove the CPU from the CTP2000 chassis:
1. Ground yourself by using an antistatic wrist strap or other device, and connect it to
one of the ESD grounding jacks, if available, or another grounding device.
2. Power off the unit.
3. If an Ethernet cable is connected to the CPU (PP310 only), disconnect the cable.
4. Using a Phillips screwdriver, loosen each of the retaining screws on the outside edge
of the CPU until the ejector that the screw secures is released.
5. Use the ejectors to remove the card from the chassis.
To return the CPU to the chassis:
1. Guide the CPU into the chassis by placing it between the guides of the slot and pushing
the module until it stops.
The module stops sliding when the ejectors make contact with the chassis.
2. Tighten each of the retaining screws on the outside edge of the CPU.
3. If an Ethernet cable was connected to the CPU (PP310 only), reconnect the cable.
Installing or Replacing CTP2000 DRAM Memory Modules in the PP310 or PP332 CPU
The PP310 accepts standard 200-pin DDR SODIMM modules fitted with 2.5V PC2100
DDR SDRAM without ECC. ECC is supported by devices soldered onto the board. Two
sockets are provided that can accommodate SODIMMs of 512 MB or 1 GB capacities.
The PP332 accepts standard 200-pin DDR SODIMM modules fitted with 2.5V PC2100
or PC2700 DDR SDRAM. Both 64-bit non-ECC SODIMM modules and 72-bit ECC SODIMM
modules are supported. If ECC is required, then ECC modules must be fitted. Two sockets
are provided that can accommodate modules up to 1 GB capacity each
When fitting only one SODIMM (for either CPU) this must be in the SODIMM #1 position.
To install or replace a memory module in the PP310 CPU:
1. Ground yourself by using an antistatic wrist strap or other device, and connect it to
one of the ESD grounding jacks, if available, or another grounding device.
2. Remove the new memory module from its antistatic bag.
3. Remove the CPU board from the CTP2000 chassis. See “Servicing the CTP2000
CPU” on page 23.
4. To remove a memory module:
23Copyright © 2015, Juniper Networks, Inc.
Chapter 2: Upgrading the CTP2000 Series Device to CTPOS 7.x
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