Replaceable server componentsReplaceable components are of three types:v Tier 1 customer replaceable unit (CRU): Replacement of Tier 1 CRUs is yourresponsibility. If IBM installs a Tier 1 CRU at your request, you will be charged forthe installation.v Tier 2 customer replaceable unit: You may install a Tier 2 CRU yourself orrequest IBM to install it, at no additional charge, under the type of warrantyservice that is designated for your server.v Field replaceable unit (FRU): FRUs must be installed only by trained servicetechnicians.For information about the terms of the warranty and getting service and assistance,see the Warranty and Support Information document.Table 4. Parts listing, Type 7978 and 1913Index DescriptionCRU partnumber(Tier 1)CRU partnumber(Tier 2)FRU partnumber1 Top cover assembly 43W06092 Heatsink assembly 39Y94233 Air baffles 39Y94204 Memory, 512 MB PC2-5300 ECC (all except C1x) 39M57814 Memory, 1 GB PC2-5300 ECC (model C1x) 39M57844 Memory, 2 GB PC2-5300 ECC (optional) 39M57904 Memory, 4 GB PC2-5300 ECC (optional) 39M57965 ServeRAID 8k card with battery (all except 46x, G6x) 25R80795 ServeRAID 8 k-l card (optional) 25R80766 PCI-X riser card (optional) 39Y95457 PCI Express riser card 32R28838 Planar, SATA (models 22x, 32x, 42x, 46x, G6x) 42D36398 Planar, SATA (optional) 42D38058 Planar, SAS (models 21x, 31x, 3Ax, 41x, 45x, 4Ax, 4Sx,51x, 5Ax, 61x, 6Ax, 71x, 7Ax, G5x)42D36388 Planar, SAS (models A1x, C1x) 42D38049 Power supply, 670 W 39Y71899 Power supply, -48 V (optional) 39Y718610 Power supply filler panel 39Y942011 Chassis assembly 39Y952212 Fan assembly unit (dual-fans) 26K808313 CD-RW/DVD combo drive 39M354114 Operator information panel assembly 43W062515 Hot-swap filler panel, 2.5-inch (model 4Sx) 26K868016 Hard disk drive, 2.5-inch, HS varies17 Hot-swap SAS hard disk drive cage, 2.5-inch (model 4Sx) 32R282290 IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide
