IBM 884015U Maintenance And Troubleshooting Manual

Contents

Note: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionThe server does not turn on. 1. Verify that:v The power cables are properly connected to the server.v The electrical outlet functions properly.v The type of memory installed is supported by the server, and that functionalDIMMs are installed in slots 1 and 2.v The microprocessor is installed in the correct socket.v The diagnostic panel cable is properly connected.v If you just installed an option, remove it, and restart the server. If the servernow turns on, you might have installed more options than the power supplysupports.2. If LEDs for microprocessors or VRMs are on, verify that:a. A VRM is installed if a second microprocessor is present.b. All microprocessors have the same speed.3. Override front panel power button:a. Disconnect server power cords.b. Move switch 1 on switch block 2 to the opposite position.c. Reconnect power cords.If server turns on:a. Service processor (baseboard management controller) error.b. Operator information card.If server does not turn on:v System boardThe server does not turn off. 1. Verify whether you are using an ACPI or non-ACPI operating system. Ifyou are using a non-ACPI operating system:a. Press Ctrl+Alt+Delete.b. Turn off the system by holding the power-control button for 4 seconds.c. If server fails during BIOS POST and power-control button does not work,remove the AC power cord.2. If the problem remains or if you are using an operating system with AdvancedConfiguration and Power Management (ACPI) awareness, suspect the systemboard. The procedure to check for ACPI is to locate the file named HAL.dll;ACPI is present if the internal name HALACPI.dll appears after youright-clicking on the HAL.dll file name → choose Properties → select Version tab→ click Internal Name.Serial port error symptomsNote: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionThe number of serial portsidentified by the operatingsystem is less than the numberof serial ports installed.1. Verify that:v Each port is assigned a unique address by the Configuration/Setup Utilityprogram and none of the serial ports is disabled.v The serial-port adapter, if you installed one, is seated properly.2. Failing serial port adapter.Chapter 6. Symptom-to-FRU index 97