| Sun Enterprise[tm] 450 Server: Repair ProceduresThis section provides the most common repair procedures for the 
  Enterprise 450. The written procedures below are links to the  Ultra 
  Enterprise 450 Server Owner's Guide. Clustered Hardware Note: When repairing a clustered system, 
  you should replace server components by first switching over the data services 
  to the functioning server, halting the host to be serviced, powering down the 
  host, and then performing the hardware procedure to replace the component. Following 
  the procedure, the logical hosts should be switched back to the default masters. 
   
    | Component | Tips |   
    | CD-ROM Drive |  |   
    | CPU Module | 
         
          Tuning the ecache_scan_rate parameter of the Solaris 
            cache scrubber provides improved Ecache parity error protection on 
            non-mirrored SRAM UltraSPARC II-based systems (FIN I0755-1 ). 
          OS mapping versus physical location of CPU modules 
            for E420R, E450, U80 and Netra t1400/t1405 systems may lead to incorrect 
            module replacement (FIN I0749-1 ). 
          The current diagnostic procedure to 
            identify the faulty CPU module from CPU Ecache parity errors is flawed 
            (FIN I0570-3). 
          Finding bad CPU in E450 (Problem article 1004624.1 ). 
           |   
    | Disk Drive | 
        
           Improved firmware for Seagate 10K.6 disk drives will reduce the incidence of unexpected outages due to a spindle motor issue (FIN I1136-1 ). 
          Improved drive firmware will reduce the incidence 
            of HDI failures on IBM Discovery disk drives (FIN I0955-1 ).
          18.2GB and 36GB IBM disk drives may be susceptible 
            to early life failures problem (FIN I0724-2 ). 
           
          Seating problems may occur when adding a disk (FIN 
            I0476-1 ).Systems with 18.2GB and 36GB IBM disk drives may experience higher than expected failure rate.
           (FCO A0182-2).
        Disks not being recognized in an E450 (9gb and 18Gb) (Problem article 1010151.1 
          ). How to find a disk in a Enterprise [TM] 450 using iostat (How To article 1017486.1). 
         |   
    | Floppy Drive |  |   
    | Memory |  |   
    | PCI Card | 
         
           
             
              SunPCi II and SunPCi IIpro cards may not respond 
                after rapid/successive power cycling (FCO A0186-1 ). 
          A host system using the 375-0040-01 or -02 FC100/P 
            FC-AL PCI card to attach to FC-AL storage (StorEdge A5x00 and A3500) 
            may experience loop errors, which may affect data access to that storage 
            (FCO A0164-1 ).Systems with PCI FC-AL host adapter cards may experience loop reset 
          problems, making the system unusable (only 41 cards are affected) (FCO 
          A0160-1). 
         
          src/p card causes e450 to fail boot with upa-port 
            error (Problem article 1008645.1 ). 
          Gigabit Ethernet 2.0 card config causes slow cpu speed 
            at bootup on UE450 (Problem article 1003233.1 ). |   
    | Power Supply | 
         
          If one of the power supply (300-1302-02 or lower) 
            loses power and becomes bad, it may not be identifiable through Front 
            panel LED lit (FIN I0732-1 ) 
          There is a possibility of stripping the mounting screws 
            when adding the power supply (FIN I0358-1 ). |   
    | Removable Media Assembly (RMA) Backplane |  |   
    | System Board | 
 |   
    | Tape Drive |  |   
    | UltraSCSI 4-Slot Backplane |  |   
    | UltraSCSI 8-Slot Backplane |  |  
 |