Chapter 6. Symptom-to-FRU Index 103210XXXXInternal bus, size unknown210XXX1External bus, size unknown1. SCSI Hard Disk Drive2. SCSI Adapter or System Board3. SCSI Cable4. SCSI ID Switch (on some models)Tape Drive amber LED remains on 1. Tape Drive2. SCSI Cable (internal)3. SCSI Adapter or System BoardTape Drive green "in use" LED fails to come on 1. Tape Drive2. SCSI Adapter or System Board3. SCSI Cable (internal)4. SCSI Cable (external)Tape automatically ejected from drive 1. Tape CassetteDriveSCSI ID on rotary switch does not match SCSIID set in configuration. Verify drive switchesinside cover are set to zero1. Rotary Switch Circuit Board2. Circuit Board Cable3. Tape DriveTape sticks or breaks in drive.Verify that the tapes used meet ANSI standardX3B51. Tape Cassette212XX 1. SCSI Printer2. Printer Cable213XX 1. SCSI Processor214XX 1. WORM Drive215XXXC, 215XXXD, 215XXXE, 215XXXUIf an external device, and power-on LED is off,check external voltages1. CD-ROM Drive I2. CD-ROM Drive IIEnhanced CD-ROM Drive IIAny CD-ROM Drive3. SCSI Cable4. SCSI Adapter or System Board216XX 1. Scanner217XXIf an external device, and power-on LED is off,check external voltages1. Rewritable Optical Drive2. SCSI Adapter or System Board3. SCSI Cable218XXCheck for multi CD tray or jukebox1. Changer219XX 1. SCSI Communications Device24201Y0, 24210Y0Be sure wrap plug is attached1. ISDN/2 Adapter2. ISDN/2 Wrap Plug3. ISDN/2 Communications Cable273XX 1. 1 Mbps Micro Channel2. Infrared LAN Adapter27501, 27503, 27506, 27507 1. ServerGuard Adapter2. System Board3. Riser card27502, 27504, 27510, 27511, 27533, 27534,27536, 275371. ServerGuard AdapterPOST Error Code FRU/Action