System model, tower,expansion unit, ormachine typeName of FRU toexchangeFRU position Link to failing componentservice information (CCIN, PN,remove and replace procedure)Models 840 and SB3Base I/O Tower (FC9079)HSL I/O bridge Card C08 See Figure 2. Locations for FC9079 Base I/O Tower (on Models840, SB3 System Unit) inLocations — Model 840Models 870 and 890Primary I/O Unit, FC9094HSL I/O bridge card C10 See Locations — Models 870 and890 with an FC 9094 Base I/OTowerFC 5074 Expansion I/OTowerHSL I/O bridge card C08 See Locations — FC 5074Expansion I/O TowerFC 5075 Expansion I/OTowerTower card CB1 See Locations — FC 5075Expansion I/O TowerFC 5078 and FC 0578Expansion I/O UnitHSL I/O bridge card C08 See Locations — FC 5078, FC0578 Expansion I/O UnitFC 5079 (1.8mExpansion I/O Tower)HSL I/O bridge card C08 See Locations — FC 5079 I/OExpansion I/O TowerFC 5088, FC 0588Expansion I/O UnitHSL I/O bridge card C10 See Locations — FC 5088, FC0588 Expansion I/O UnitFC 5094, FC 5294, FC8094 Expansion I/O UnitHSL I/O bridge card C10 See the following:v Locations — FC 5094Expansion I/O Towerv Locations — FC 5294Expansion I/O Towerv Locations — FC 8094Expansion I/O TowerFC 5095, FC 0595Expansion I/O TowerHSL I/O bridge card C05 See Locations — FC 5095, 0595Expansion I/O TowerExternal xSeries (TM)ServerIntegrated xSeries (TM)Adapter CardFollow the HSL cables See Locations — IntegratedxSeries (TM) Adapter Card (IXA)FC 5077 SPD migratedtowerGo to symbolic FRU LBUSADP in the Migrated Expansion Tower Problem Analysis,Repair and Parts manual on the V5R1 Supplemental Manuals web site .FC 5033, FC 5034, or FC5035 SPD migrated towerGo to symbolic FRU CVTCARD in the Migrated Expansion Tower Problem Analysis,Repair and Parts manual on the V5R1 Supplemental Manuals web site .This ends the procedure.SI_PHBFor use by authorized service providers.SI_PHB: high-speed link PCI host bridge.The HSL I/O bridge hardware in a system unit, primary I/O unit, or I/O expansion unit is failing.Follow this procedure to identify the failing component to exchange.1. Choose from the following options:v If you are working from the Service Action Log and a card position is listed with this FRU, then thatis the card position where the error is. Continue with the next step.452 iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis andIsolation
