IBM 8676 Hardware Maintenance Manual - Page 101
Keyboard, mouse, pointing-device, problems, Symptom, FRU/action, Verify, Memory, Microprocessor,
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Note: See "System" on page 112 to determine which components should be replaced by a field service technician. Keyboard, mouse, or pointing-device problems Symptom FRU/action All or some keys on the keyboard do not work. 1. Verify that: v The keyboard cable is securely connected to the system, and the keyboard and mouse cables are not reversed. v The server and the monitor are turned on. 2. Keyboard. 3. System board. The mouse or pointing device does not work. 1. Verify that: v The mouse or pointing-device cable is securely connected, and that the keyboard and mouse cables are not reversed. v The mouse device drivers are installed correctly. 2. Mouse or pointing device. 3. System board. Note: See "System" on page 112 to determine which components should be replaced by a field service technician. Memory problems Symptom FRU/action The amount of system memory displayed is less than the amount of physical memory installed. 1. Verify that: v The memory modules are seated properly. v You have installed the correct type of memory. v If you changed the memory, you updated the memory configuration with the Configuration/Setup Utility program. v All banks of memory on the DIMMs are enabled. The server might have automatically disabled a DIMM bank when it detected a problem or a DIMM bank could have been manually disabled. 2. Check POST error log for error message 289: v If the DIMM was disabled by a system-management interrupt (SMI), replace the DIMM. v If the DIMM was disabled by the user or by POST: a. Start the Configuration/Setup Utility program. b. Enable the DIMM. c. Save the configuration and restart the server. 3. DIMM. 4. System board. Note: See "System" on page 112 to determine which components should be replaced by a field service technician. Microprocessor problems Symptom FRU/action The server emits a continuous tone during POST. (The startup (boot) microprocessor is not working properly.) 1. Verify that the startup microprocessor is seated properly. 2. Startup microprocessor. Chapter 6. Symptom-to-FRU index 91