IBM 88614RX Maintenance Manual - Page 78

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. Force power-on jumper (J10) Microprocessor 3 VRM error LED Light-path diagnostics button Microprocessor 4 VRM error LED Microprocessor 3 VRM connector Microprocessor 4 VRM connector Microprocessor 1 socket Microprocessor 1 error LED Microprocessor 2 error LED Microprocessor 4 socket Light-path test LED Microprocessor 4 error LED Microprocessor 3 socket Microprocessor 2 socket Microprocessor 3 error LED 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 v v Read "Installation guidelines" on page 29. Read "Safety information" on page 147. 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