FMEA(英文版).doc

.FAILURE MODE AND EFFECTS ANALYSIS FMEAFMEA No.：Page No.：Page 1of3（Process FMEA）Process ：DrillingDesign :Key date:05.07.04Approve by：PCB No.：FMEA Date :01.07.04Revision :FMEA period：Three monthsFMEA Team： Process functionRequest Potential failure modeEffects or defects of potential failure mode(S)StepCauses of potential failure mode(O)Process control at present(D)RPNAdvice Manager and finishing dateThe result of adviceSteps been taken(S)(O)(D)RPNDrilling holes in PCB according to requestsVQSRough hole Fibre in hole Hole plugged Edge Rough hole wall copper, may effect hole diameter after PTH process6Short of sucking in some drilling machines4Clean the sucking part every class372Use a new style of drilling machineED、EMPROD2003.11.30Drill bit problem Drill void Poor quality of drill bit after renew4Checked by operator before use372No Unfitted setting for drilling Unfitted parameter Wrong way for drilling2Set fitted parameter and use the right way to drill special holes according to MEI019336No Bad incoming board 3Spot checked by IQC354No Shift hole Open/ short7The problem of drilling machine Dirty collet of drilling machine Lower function of spindle than before Short of sucking in some drilling machines6Maintain the drilling machine, especially the sucking part according to MEI019284Use a new style of drilling machineED、EMPROD2003.11.30FAILURE MODE AND EFFECTS ANALYSIS FMEAFMEA No.：PFMEA-BPG-017Page No.：Page 2of3（Process FMEA）Process ：Drilling Design :Zhongming_XieKey date:05.07.04Approve by：Huliang_HuangPCB No.：3138310066FMEA Date :01.07.04Revision :FMEA period：Three monthsFMEA Team：Jiangen_Li, Xianfeng_Zou, Changgen_Hu, Jiuqing_Li, Zhongming_Xie, Zhongqi_Wu, Huliang_Huang, Song_Lai，Xiaoming_Hu Process functionRequest Potential failure modeEffects or defects of potential failure mode(S)StepCauses of potential failure mode(O)Process control at present(D)RPNAdvice Manager and finishing dateThe result of advice Steps been taken(S)(O)(D)RPNDrilling holes in PCB according to requestsShift holeOpen/short 7Drill bit problem Low quality of renewing Drill bit void Unfitted parameter for renewed drill bit 3 Check renewed drill bit by IQC, and only pass ones can be used Check drill bit before use Set exact parameter according to MEI019363No Bigger or smaller hole Effect assembling or registraction in the following process6Drill bit problem Drill bit void Use wrong bit 3Check drill bit before use and check the turns of drill bits236No Fiber exposed or copper face scraped Open or short7Scraped by hard thing when operating 3Operating carefully, and use rubber hammer to fixup registration bits242No FAILURE MODE AND EFFECTS ANALYSIS FMEAFMEA No.：PFMEA-BPG-017Page No.：Page 3of3（Process FMEA）Process ：DrillingDesign :Zhongming_XieKey date:05.07.04Approve by：Huliang_HuangPCB No.：3138310066FMEA Date :01.07.04Revision :FMEA period：Three monthsFMEA Team：Jiangen_Li, Xianfeng_Zou, Changgen_Hu, Jiuqing_Li, Zhongming_Xie, Zhongqi_Wu, Huliang_Huang, Song_Lai，Xiaoming_Hu Process functionRequest Potential failure modeEffects or defects of potential failure mode(S)StepCauses of potential failure mode(O)Process control at present(D)RPNAdvice Manager and finishing dateThe result of advice Steps been taken(S)(O)(D)RPNDrilling holes in PCB according to requestsNo drilling through Open or short 8Low FL. 2Renew drill bit according to MEI019. Dont use the drill bits that renewed more than requests232No Rubbish on board, and caused the drill bit broken 2Place drill bit in special box, and carefully operating 232No Yellow board Effect PTH process 4Dirty oven 2Clean ovens every 15 days216No High temparature in some parts of oven2Test ovens termly by QA216No Dirt or smearOpen or short part of them MRB6The entry size