Operation Manual

Microprocessor tray assembly
This section shows the locations of items on the microprocessor board and
describes how to remove a microprocessor.
Microprocessor board connectors, jumpers and LEDs
The following illustration shows the connectors, jumpers, and LEDs on the
microprocessor board.
Light-path
diagnostics button
Light-path
test LED
Microprocessor 4
VRM error LED
Microprocessor 3
VRM error LED
Microprocessor 4
VRM connector
Microprocessor 3
VRM connector
Microprocessor 4
socket
Microprocessor 3
socket
Microprocessor 2
socket
Microprocessor 1
socket
Microprocessor 1
error LED
Microprocessor 4
error LED
Microprocessor 2
error LED
Microprocessor 3
error LED
Force power-on
jumper (J10)
The microprocessor board contains the force power-on jumper (J10), a two-pin
jumper block. The default is no jumper installed over the two pins. Place a jumper
over the two pins to force the server to start up when you connect the server to ac
power.
Microprocessor removal
This section contains information about removing a microprocessor.
Note:
v Read “Installation guidelines” on page 29.
v Read “Safety information” on page 147.
v Read “Handling static-sensitive devices” on page 30.
Complete the following steps to remove a microprocessor:
1. Turn off the server and all peripheral devices; then, disconnect all power cords
and external cables.
2. Remove the top cover (see “Removing the cover and bezel” on page 32).
3. Remove all fans.
4. Remove the memory cassette.
5. Lift the microprocessor-tray release latch.
6. Remove the microprocessor tray assembly (see “Installing a microprocessor” on
page 44).
68 IBM xSeries 365 Types 8861, 8862: Hardware Maintenance Manual and Troubleshooting Guide