IBM System x3455 Installation Manual

Also see for x3455 - System - 7984: Specifications User guide

Contents

v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See the parts listing in the Problem Determination and Service Guide to determine which components arecustomer replaceable units (CRU) and which components are field replaceable units (FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by atrained service technician.Symptom ActionMultiple rows of DIMMs in abranch are identified as failing. 1. Reseat the DIMMs; then, restart the server.2. Replace the lowest-numbered DIMM pair of those identified; then, restart theserver. Repeat as necessary.3. (Trained service technician only) Replace the system board.Microprocessor problemsv Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See the parts listing in the Problem Determination and Service Guide to determine which components arecustomer replaceable units (CRU) and which components are field replaceable units (FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by atrained service technician.Symptom ActionThe server emits a continuousbeep during POST, indicatingthat the startup (boot)microprocessor is not workingcorrectly.Attention:v The server will not start if microprocessor socket 1 (connector CPU1) is empty.v If only one microprocessor is installed, it must be in socket 1 (connector CPU1).For socket location and installation instructions, see “Installing an additionalmicroprocessor” on page 20.1. Correct any errors that are indicated by the error LEDs (see “System boarderror LEDs and the light path button” in the Problem Determination and ServiceGuide).2. Make sure that the server supports the microprocessor. See “Parts listing” inthe Problem Determination and Service Guide for a list of supportedmicroprocessors.3. (Trained service technician only) Make sure that the microprocessor is seatedcorrectly.4. (Trained service technician only) Replace the microprocessor.5. (Trained service technician only) Replace the system board.62 System x3455 Types 7984 and 7986: Installation Guide