size of memory enclosure 31slots 8softwareproblems 56software service and support telephonenumbers 1028solid state drive 116solid state drive backplane,removing 156sparing 129specifications 7specifications, memory expansionmodule 29SSDbackplane assembly, replacing 156start here 40start partition, using IMM Telnet 225starting 39starting backup server firmware 209statements and notices 7static electricity 99static-sensitive devices 100stop partition, using IMM Telnet 225systemevent log 38locator LED, front 14reliability guidelines 99system-board tray, memory expansionmoduleremoving 197replacing 198system-error LEDfront 14rear 19system-event log 76Systems Director, updating 217systems-management connector 16TtableI/O board jumpers 28I/O board LEDs 27memorycost-sensitive configuration 132memory-mirroringconfiguration 133performance configuration 131microprocessor board LEDs 25parts listing 83Taiwan Class A electronic emissionstatement 1039telecommunication regulatorystatement 1034telephone numbers 1028TEMP light path diagnostic LED 65temperature 8temperature specifications 31thermalgrease 170material, heat sink 169Tier 1 CRUs, memory expansionmodule 176Tier 1 customer replaceable unit 105Tier 2 customer replaceable unit 105toggle partition, using IMM Telnet 225toggle partititons 225tools, diagnostic 37top-cover bracket 107, 108trademarks 1032trained service technicians,guidelines viitroubleshooting 1tables 42turning memory expansion module onand off 34turning off the server 21turning on the server 20UUEFI firmware, recovering 73undetermined problems 77undocumented problems 3United States FCC Class A notice 1035Universal Serial Bus (USB) problems 57unsafe conditions, inspecting for viiupdatingIBM Systems Director 217server configuration 202updating firmware 201USBassembly, installing 142assembly, removing 141connectors 16front connectors 13internal cabling 102keyboard, mouse, or pointing deviceproblems 46port problems 57serialconnector 16videoconnector 16usingboot selection menu program 208embedded hypervisor 214remote presence feature 215scalable partition 218ServerGuide 209Vvideoproblems 50viewing event logs 39WWeb interfacelogging on to 213obtaining IP address 213web interface, scalable partition 218,220, 221, 223web siteServerGuide 209weight 8weight of memory enclosure 311046 IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Problem Determination and Service Guide