| Sun Enterprise[tm] 250 Server: Repair ProceduresThis section provides the most common repair procedures for the 
  Enterprise 250. The written procedures below are links to the  Sun Enterprise 250 Server Owner's Guide (805-3389 / 805-5160). 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/DVD-ROM Drives |  |   
    | CPU Module | 
        Sun Enterprise 250 Server 400MHZ CPU Modules may sustain damage during 
          installation (FIN I0485-1).The current diagnostic procedure to identify the faulty 
          CPU module from CPU Ecache parity errors is flawed (FIN I0570-3).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).
 |   
    | Disk Cage Assembly |  |   
    | 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 ).18.2GB and 36GB IBM disk drives may be susceptible to early life failures 
          problem (FIN I0724-2). 
        Systems with 18.2GB and 36GB IBM disk drives may experience higher than expected failure rate.
           (FCO A0182-2).
         |   
    | Fan Tray Assembly |  |   
    | Floppy Drive | 
 |   
    | Memory | 
 |   
    | NVRAM/TOD Module | 
        Failure to remove power cables from E250 system board may result in 
          NVRAM corruption (FIN I0427-1). |   
    | PCI Card | 
         
           
             
              SunPCi II and SunPCi IIpro cards may not respond 
                after rapid/successive power cycling (FCO A0186-1 ). 
          src/p card causes e450 to fail boot with upa-port 
            error (Problem article 1008645.1 ). 
           |   
    | Power Distribution Board |  |   
    | Power Supply |  |   
    | Removable Media Assembly (RMA) | 
 |   
    | SSP Paddle Card |  |   
    | System Board | 
         
          Setting NVRAM, RSC-MAC Addr and RSC Params after replacing 
            E250 System Board (How To article 1001543.1 ). |   
    | Tape Drive |  |   
    | UltraSCSI Backplane |  |  
 |