MOD 300 hardware MTBF (Mean Time Between Failure) analysis.

Problem:Solution

ABB Part Number ABB Part Description MTBF (HOURS)

V007BE,BF,BG Multibus Serial I/O Module I96,078

V008BZ Multibus Video Module J63,157

V009BZ Multibus D/M Module I96,078

V010BZ Multibus SIM J94,117

V010DZ Monitor, 19' Color 35,971

V011BZ Multibus Disk Controller ModuleI53,846

V012BZ Multibus Ethernet Link Module 86,956

V024BP,BZ Multibus Processor Module 20 MHz, 86,207

N8020 CPU, 4 MB RAM

V024BP,BZ Multibus Processor Module 20 MHz, 54,347

68020 CPU, 8 MB RAM

V026BZ Multibus Processor Module 33 MHz, 54,347

68020 CPU, 8 or 16 MB RAM

V033FP TrackBall for Universal Keyboard N/A

V053TZ Universal Keyboard I69,915

V063NZ Multibus SCSI Hard Disk Drive 58,479

V102BZ Multibus MV/TC Input Module L16,666

V004BZ Model B Controller Module 87,642

V005BZ Model B D/F Module I41,442

V014BZ Model B Backup Memory Module 73,692

V015BZ Model B I/O Transfer Module N66,666

V018BZ Model B Memory Expansion Module N/A

V204BZ SC Controller Module 97,097

V205BZ SC D/F Module I44,927

V214BZ SC Backup Memory Module 98,039

V224NZ SC Bulk Power Supply I58,730

V226BZ SC Direct I/O Module N/A

V227BZ SC Field Bus Module M98,802