Optional-device problemsThis topic provides a list of symptoms and suggestions for resolving problemswith optional devices.About this taskv Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v See Chapter 4, “Parts listing, Types 7145, 7146, 7143, and 7191,” on page 81 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 ActionAn IBM optional device thatwas just installed does notwork.1. Make sure that:v The device is designed for the server (see ).v You followed the installation instructions that came with the device and thedevice is installed correctly.v You have not loosened any other installed devices or cables.v You updated the configuration information in the Setup utility. Whenevermemory or any other device is changed, you must update the configuration.2. Reseat the device that you just installed.3. Replace the device that you just installed.An IBM optional device thatused to work does not worknow.1. Make sure that all of the hardware and cable connections for the device aresecure.2. If the device comes with test instructions, use those instructions to test thedevice.3. If the failing device is a SCSI device, make sure that:v The cables for all external SCSI devices are connected correctly.v The last device in each SCSI chain, or the end of the SCSI cable, isterminated correctly.v Any external SCSI device is turned on. You must turn on an external SCSIdevice before turning on the server.4. Reseat the failing device.5. Replace the failing device.POST reports the following PCIevent: Redundant PCI HostBridge IB Link Failed. SlotNumber = NA. Bus Number =NA.Device ID = 0xffff. VendorID = 0xffff1. Check for bent pins between the I/O-board shuttle and the microprocessorboard.2. Replace the failing device.52 IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Problem Determination and Service Guide
