PFMEA失效模式分析案例.xls

Page 1 of 19 Co.,Ltd.Co.,Ltd.(PROCESS FMEA)(PROCESS FMEA) Item项目名称:Page no.页码：共19页 Model Year/Vehicle:Responsibility责任部门：Prepared by制作： Core Team核心小组:Key Date关键日期： 过程项目潜在的潜在的严S 级潜在的频O现行制程预防控制现行制程侦测措施难DR建议的措施责任与目标效果确认Action Results &功能要求失效模式失效结果重E失效原因与机理度CCurrent ControlCurrent Control检ePRecommended完成日期SODR Process DescpriptionPotentialPotential度V 别Potential数CPreventionDetection度tNAction(s)Res.&Tar.采取的措施eceP &Process Purpose Failure ModeEffect(s) of FailureCause(s) of FailureCompletion Date Action TakenvctN Parts incoming部品受入过程Parts incoming部品受入过程 1. Receiving parts poor appearancefunction error 7handling carelessly by2None1 visual check by warehouseman & IQA 2None 1.接收部品on cartonor packing NGoperator or due to delivery无1 由仓管员及IQA目视检查无 纸箱的有形损坏功能或装置不良操作或运输过程中的过失操作2 visual check by PK01 station7 2 包装工位目视检查 actual qty unmatched with cant complete this lot7handling carelessly by2Nonecheck by warehouseman & IQA4None suppliers invoice无法完成该批量的产品operator or due to delivery无由仓管员及IQA核对发票上的数量6无 部品数量与供应商操作或运输过程中的过失操作 的发票不符 2.Incoming inspection oversight on inspectionNG parts released to 6incoming part released to2rule of incoming inspection1 check by part using station2None 2.受入检查 漏检product line4warehouse without release 受入检查规定1 部品使用工位来料检查7无 (IQC) 错误或不良品stamp of IQA2 cosmetic check 100% 流到生产线无受入检查印章部品入了库2 100%进行外观检查 NG parts released to 61 miss operating2qualification training on 4None product line41 操作失误inspection3无 检查员资格培训 2 dont point out inspection item in inspection document 2 检验指导书没有明确的指出检 测点 21 add inspection items in document 1 追加检验指导书中没有的检验点 2 IQC re-inspect all parts in warehouse 2 在库品IQC全部重检 3 refer detail in report SCAR 07-OM-005 and SCAR 07-OM-003 3 详见编号为SCAR 07-OM-005 and SCAR 07-OM-003中的报告 100% fuction check 后段工位多重100%进行功能测试 3None 无 3 tester failure23None 3 测定器失效4无 3. Part storagePart Shortagecant complete this lot7mistake input by warehouseman 2Nonecheck parts list by warehouse4None 3.部品入库/储藏缺少部品无法完成该批量的产品1仓管员输入错误无仓库核对入库清单6无 check parts list by materiel people 物料员核对入库清单 part rustinessfunction error7temperature/humidity out of 21.temperature/humidity control2None /ESD destroy功能不良standard1.温湿度管理规定4无 部品生锈/ESD破坏温湿度超标2.ESD control 作业准备时点检温湿度表 2.静电管理规定 4. Part supplyed to part supplyed wronglyproduct line stop7mistake parts by warehouseman 2mark part location and makingcheck part list and BOM4None product line 发错料生产线停产1or part list wrongspecial control on similar parts 检查发料清单,核对BOM表无 4.发料到生产线 发料员在仓库拿错料对部品放置区域作相关标识 发料单制作错误对类似品作特殊管理 partsurface scrape in transport process 部品刮伤 poor appearance 外观不良(面板,旋钮表面刮伤) 6 4 1 rub between parts and packing materiel 1 部品在运输过程中与自身的包 装材料摩擦 21 requset vender improve packing materiel 1 要求供应商修改部件的包装材料 2 refer detail in report PR-07- 08 2 详见PR-07-08报告 1 inspect parts before assemble 1 部品组装前检验 2 cosmetic check 100% 2 外观100%检验 4 7 None 无 100% fuction check 后段工位多重100%进行功能测试 check temperature/humidity at the begin of work overview NG 未检出不良 错误或不良品流到生产线 96 28 56 56 36 56 96 24 48 28 有限公司有限公司工 程 潜 在 的 失 效 模 式 与 效 果 分 析工 程 潜 在 的 失 效 模 式 与 效 果 分 析 C L A S S 风 险 优 先 率 FMEA date日期（编制）： emendation on equipments yearly 仪器校正每年一次 equipments maintain monthly 设备的月度保养 check equipments at the begin of work 作业准备时测量 6 6 6 6 样式:RF-PT-03,050705 Page 2 of 19 Co.,Ltd.Co.,Ltd.(PROCESS FMEA)(PROCESS FMEA) Item项目名称:Page no.页码：共19页 Model Year/Vehicle:Responsibility责任部门：Prepared by制作： Core Team核心小组:Key Date关键日期： 过程项目潜在的潜在的严S 级潜在的频O现行制程预防控制现行制程侦测措施难DR建议的措施责任与目标效果确认Action Results &功能要求失效模式失效结果重E失效原因与机理度CCurrent ControlCurrent Control检ePRecommended完成日期SODR Process DescpriptionPotentialPotential度V 别Potential数CPreventionDetection度tNAction(s)Res.&Tar.采取的措施eceP &Process Purpose Failure ModeEffect(s) of FailureCause(s) of FailureCompletion Date Action TakenvctN 有限公司有限公司工 程 潜 在 的 失 效 模 式 与 效 果 分 析工 程 潜 在 的 失 效 模 式 与 效 果 分 析 C L A S S 风 险 优 先 率 FMEA date日期（编制）： 5.Label print print badnessdifficult to trace4operating NG2training operatorlabel scan.条码扫描比对2None 5标签打印打印不良批量不易追溯1作业不良培训作业员无 equipment NG2check and maintain equipmentdaily check2None 设备故障点检,保养日常点检无 label scan.条码扫描比对 CDR MECHA准备工程CDR MECHA准备工程 PCBs surface scrape 主基板表面划伤 function error 功能不良 8 7 PCB scrape by hardness in process 作业过程中硬物刮伤 2forbid operator wear ring or other hardness 作业员禁止带戒指等硬物作业 1 100% visual check 1 100%目视检查 2 next station 100% function check 2 后续多层工位100%功能视检查 4 3 none 无 ESD destroyelectrical function7operator not wearing 2 use ESD cleaner to get rid of ESD 1.daily check before line start2None ESD破坏failuredESD band使用离子风机消除静电1.每天开始生产前检查4无 电器性能破坏作业员没有佩带静电带2.check ESD of operating areas 2.作业区域静电检查 oversight on inspection 漏检 NG parts released to product line,result in production function fail as cant workable or instability 不良品流到生产线,造成产品功 能不良 8 7 parts put into next station without inspection because of miss operating of operator 作业员失误,部件没有检查就流到 下个工位 2dispart the checked parts and without check parts 检查过和未检查的部品分开放置 if parts have checked ,will make a mark on it 在已经检查过的部品上打点确认 100% fuction check 后续多层功能测试工位100%检查 100% visual check on parts using station 在部件的使用工位100%检验有无该标识 4 3 none 无 NG parts released to 61 miss operating2qualification training on 4None product line41 操作失误inspection3无 检查员资格培训 2 tester failure2emendation on equipmentsemendation list of equipments3None 2 测定器失效仪器校正仪器校正清单无 100% fuction check 后段100%进行功能测试 FT测试搜索敏感性的参数设 置不正确 产品误判(搜索不停台)2参数设置过严,造成产品在正常的 状态下无法实现搜索停台的功能 2搜索停台的控制规格设定为 35.3dbuvemf fuction check 后续工位功能检查 4搜索停台的控制规格更改设定为 36.7dbuvemf 生技 日期: 2007/06/20 完成 负载盒上开关位置拨错产品误判(搜索不停台)2作业员误操作将负载盒上的“TNS“ 开关由“on“拨到“OFF“造成产品在 正常的状态下无法实现搜索停台 的功能 2生技设备月度保养工作准备时作业员的点检41 负载盒上追加开关位置标识 2 将负载盒上的ACC开关移到治具 上,避免作业员在负载盒上作业 生技 日期: 2007/06/11 完成 7. fix main PCB to chassismodule chassis is NG assembly7handling carelessly by2None2None &screwingout of shape错误装配4operator or due to delivery无7无 ( ST:A-01) 模块变形操作或运输过程中的过失操作由仓管员及IQA目视检查 7.组装主基板至五金支架check by hisself &打螺丝对来料进行自检查 NG assemblyfixing NG7pressure not enough 2use cylinder jigcheck pressure daily and when4None 错误装配组装不到位4压力不够用气缸治具model changed无 每天或换机种时检查气压 fixing to wrong location2training operator100% visual double check 4None 放入位置不正确培训作业员100%双重目视检查7无 screw loose/tightenrattle noise heard when6screw driver torque too small 2use torque meter to control check torque daily and when4None 螺丝松动或过紧shaking due to loose4螺丝刀扭力过小torquemodel changed无 松动，摇晃时有杂音用扭力计控制扭力每天或换机种时检查扭力 slide occurred due to 6screw driver torque too big2use torque meter to control check torque daily and when4None tighten4螺丝刀扭力过大torquemodel changed无 过紧，滑牙用扭力计控制扭力每天或换机种时检查扭力 stick sheet to wrongcant load CD7miss operating21.training operator100% visual double check 4None location 不能进碟操作错误1.培训作业员100%双重目视检查7无 碟仓绒布贴附位置不正确2.process sheet 2.作业指导书 100% fuction check 后段多层工位100%进行功能测试 visual check by warehouseman & IQA 16 16 28 64 56 56 64 56 28 36 16 56 48 48 错误或不良品流到生产线, 48 6. inspect main PCB (ST:PT01) 6. main PCB部件检验 overview NG 未检出不良 6 6 样式:RF-PT-03,050705 Page 3 of 19 Co.,Ltd.Co.,Ltd.(PROCESS FMEA)(PROCESS FMEA) Item项目名称:Page no.页码：共19页 Model Year/Vehicle:Responsibility责任部门：Prepared by制作： Core Team核心小组:Key Date关键日期： 过程项目潜在的潜在的严S 级潜在的频O现行制程预防控制现行制程侦测措施难DR建议的措施责任与目标效果确认Action Results &功能要求失效模式失效结果重E失效原因与机理度CCurrent ControlCurrent Control检ePRecommended完成日期SODR Process DescpriptionPotentialPotential度V 别Potential数CPreventionDetection度tNAction(s)Res.&Tar.采取的措施eceP &Process Purpose Failure ModeEffect(s) of FailureCause(s) of FailureCompletion Date Action TakenvctN 有限公司有限公司工 程 潜 在 的 失 效 模 式 与 效 果 分 析工 程 潜 在 的 失 效 模 式 与 效 果 分 析 C L A S S 风 险 优 先 率 FMEA date日期（编制）： PCB crack/scratchfunction error7miss operating21.training operator100% visual check 4None PCB 断裂/ 划伤功能不良操作失误1.培训作业员100%目视检查3无 2.jig for avoiding missing 2.防呆治具 incoming part NG2PCB cosmetic checkincoming inspection2None 来料不良PCB板外观检查受入检查3无 100% check fuction repeatedly 后段多层工位100%进行功能测试 forget to stick heatNG assembly7miss operating21.manage by quantity100% visual check by hisself4None sink sheet to PCB错误装配4操作错误1 数量管理100%目视自检8无 漏贴散热胶布至PCB2.process sheet 2.作业指导书 ESD destroyelectrical function7operator not wearing 2 use ESD cleaner to get rid of ESD 1.daily check before line start2None ESD破坏failuredESD band使用离子风机消除静电1.每天开始生产前检查4无 电器性能破坏作业员没有佩带静电带2.check ESD of operating areas 2.作业区域静电检查 space between panelfixing NG3block of fixing jig shifted21.check this item when monthly1 visual check by hisself after3None bottom and chassis组装不到位面板底盖定位块的位置发生偏移maintenance assemble7无 is too big when 1.治工具月度维护时重点检查此项目 1 组装后自检 assembly2 next station check 组装时面板底盖与五金支架2 后工位检查 之间间隙过大 screw of jig loosedNG assembly3the screw is used to fix the 21.check this item when monthly1 visual check by hisself after3None 治具螺丝松动错误装配pillar of cylinder and pillar maintenance assemble7无 of press,its easy to become1.治工具月度维护时重点检查此项目 1 组装后自检 loose when using2 next station check 该螺丝用于连接汽缸杆与受力杆,2 后工位检查 使用中易松动 post beside sheet leatherNG assembly3this item is not treated as2None1.IQC added this item to inspection4None plate of bottom panel错误装配important item when inspection无process sheet无 is anamorphicIQC检查时未将此项列入重点检查1.IQC将此项列入受入检查的重点检查项目 面板底盖贴附碟仓绒布处项目2.100% visual inspection 支柱变形2.100%目视检查 螺丝刀碰伤主基板回路功能不良(AM无反应)7治具上有多余的孔,作业员锁螺丝 时打错位置,将主基板上的回路钻 断 2治具上的螺丝孔位有标识100% function check 100% 功能检查 4治具改造,将治具上多余的孔位去 除 生技 日期: 2007/08/07 完成 100% check fuction repeatedly 后段多层工位100%进行功能测试 56 18 18 24 56 28 28 56 3 3 样式:RF-PT-03,050705 Page 4 of 19 Co.,Ltd.Co.,Ltd.(PROCESS FMEA)(PROCESS FMEA) Item项目名称:Page no.页码：共19页 Model Year/Vehicle:Responsibility责任部门：Prepared by制作： Core Team核心小组:Key Date关键日期： 过程项目潜在的潜在的严S 级潜在的频O现行制程预防控制现行制程侦测措施难DR建议的措施责任与目标效果确认Action Results &功能要求失效模式失效结果重E失效原因与机理度CCurrent ControlCurrent Control检ePRecommended完成日期SODR Process DescpriptionPotentialPotential度V 别Potential数CPreventionDetection度tNAction(s)Res.&Tar.采取的措施eceP &Process Purpose Failure ModeEffect(s) of FailureCause(s) of FailureCompletion Date Action TakenvctN 有限公司有限公司工 程 潜 在 的 失 效 模 式 与 效 果 分 析工 程 潜 在 的 失 效 模 式 与 效 果 分 析 C L A S S 风 险 优 先 率 FMEA date日期（编制）： 1 shock top cover by operators mistake and make distortion of CD module 1 作业动作过失磨擦上盖导致 机芯变形 4can not superpose CD module in check process 检测过程中不能叠放 1 100% function check 2 100% visual check 1 100% 功能检查 2 100% 目视检查 2 3 None 无 2 Test CD dirty 2 碟片赃污 4check and maintain Test CD before operation 作业员作业前先进行光盘点检 function check 功能检查 2 3 None 无 CD moduleaxes lock CD 机芯前轴卡住CD碟 function errer(CD is not workable and feedback) 功能不良(无法读碟) 8 7 shock parts and make distortion of CD module 部品碰撞变形 4check appearance 检查确认外观 100% function check 功能检查 2 3 None 无 oversight on inspection 漏检 NG parts released to product line,result in production function fail as cant workable or instability 不良品流到生产线, 8 7 parts put into next station without inspection because of miss operating of operator 作业员失误,部件没有检查就流到 下个工位 2dispart the checked parts and without check parts 检查过和未检查的部品分开放置 if parts have checked ,will make a mark on it 在已经检查过的部品上打点确认 100% fuction check 后续功能测试工位100%检查 100% visual check on parts using station 在部件的使用工位100%检验有无该标识 3none 无 NG parts released to 61 miss operating2qualification training on 4None product line41 作业员失误,inspection3无 错误或不良品流到生产线,检查员资格培训 2 2 tester failure23None 2 测定器失效4无 not fix FFC steady function error8miss operating21.make jig to insert FFC3None 功能不良(FR,RR声道无输出) 7作业员过失 1.制做FFC排线插入治具6无 insert FFC flatlyfunction error7miss operating21.training operator100% visual check 4None FFC未水平插入功能不良作业员过失1.培训作业员100%目视检查并打点确认6无 2.process sheet 2.作业指导书 治具排线端子与机芯接触 不良 产品误判(按出碟键无反应)7治具上的FFC排线多次使用后 磨损,造成与机芯接触不良 2将FFC排线列为易损件,每月进行 更换 fuction check 后续工位功能检查 3治具改造,在治具上追加FFC排线快 速夹子 生技 日期: 2007/06/18 完成 1.training operator 9.insert FFC&SCD modulespring of mecha fall off function error7miss operating21.培训作业员100% visual inspection4None preparation&bracket screwing 机芯弹簧脱落功能不良操作错误100%目视检查3无 (ST: A-02) fuction check 9.FFC排线插入&机芯准备&后续工位功能检查 机芯支架打螺丝 incoming part NG2Noneincoming inspection2None 来料不良无受入检查无 100% fuction check 后续工位功能检查 ESD destroyelectrical function8Operator not wearing 2 use ESD cleaner to get rid of ESD 2None ESD破坏failured7ESD band使用离子风机消除静电4无 电器性能破坏作业员没有佩带静电带作业前检查静电 screw loose/tightenrattle noise heard when6screw driver torque too small 2use torque meter to controlcheck torque daily and when4None 螺丝松动/过紧shaking due to loose4螺丝刀扭力过小torquemodel changed无 松动，摇晃时有杂音用扭力计控制扭力每天或换机种时检查扭力 2.add correct method to carry CD module process sheet 2.作业指导书追加机芯的正确握取方 法 2.add the correct method of insertting FFC into process sheet 2.在作业指导书内追加FFC排线的正 确插入方法 1.100% visual inspection after FFC was inserted, and add mark on FFC cable, 1.FFC插入后100%目视检查,检查ok后在 FFC排线上打点做标识, 2 check mark 100% next station 2 后工位在100%目测检查标识 56 100% fuction check 后续功能测试工位100%检查 check ESD of operating areas befor line start 64 64 64 48 56 0 64 test CD can not insert into SCD module CD机芯不入碟 function errer 功能不良 8 7 48 28 FFC未固定(没有扣上 固 定FFC排线的固定扣) 8. inspect SCD module (ST:PT-02) 8. CD机芯部件的检查 overview NG 未检出不良 32 56 36 emendation on equipments yearly 仪器校正每年一次 equipments maintain monthly 设备的月度保养 check equipments at the begin of work始业点检 6 6 4 4 样式:RF-PT-03,050705 Page 5 of 19 Co.,Ltd.Co.,Ltd.(PROCESS FMEA)(PROCESS FMEA) Item项目名称:Page no.页码：共19页 Model Year/Vehicle:Responsibility责任部门：Prepared by制作： Core Team核心小组:Key Date关键日期： 过程项目潜在的潜在的严S 级潜在的频O现行制程预防控制现行制程侦测措施难DR建议的措施责任与目标效果确认Action Results &功能要求失效模式失效结果重E失效原因与机理度CCurrent ControlCurrent Control检ePRecommended完成日期SODR Process DescpriptionPotentialPotential度V 别Potential数CPreventionDetection度tNAction(s)Res.&Tar.采取的措施eceP &Process Purpose Failure ModeEffect(s) of FailureCause(s) of FailureCompletion Date Action TakenvctN 有限公司有限公司工 程 潜 在 的 失 效 模 式 与 效 果 分 析工 程 潜 在 的 失 效 模 式 与 效 果 分 析 C L A S S 风 险 优 先 率 FMEA date日期（编制）： slide occurred due to 6screw driver torque too big2use torque meter to controlcheck torque daily and when4None tighten4螺丝刀扭力过大torquemodel changed无 过紧，滑牙用扭力计控制扭力每天或换机种时检查扭力 can not fix screw tofixing NG7torque is to small(52kgf)3increase torque to 6.751.25 1.check torque daily and when2None bracket 组装不到位4螺丝刀设定力矩规格过小kgf base on technical spc and model changed3无 机芯防尘支架螺丝打不进test result,and revised CP and 1.每天或换机种时检查扭力 process sheet2.operator confirms screwing well 根据设计规格和实际打螺丝测试结after fixing 结果,将力矩调至.751.25 kgf,并2.作业员组装完毕后100%目视检查螺丝 修订控制计划和作业指导书打入良好 10. bracket-m screwing &fix螺丝松动/过紧shaking due to loose6螺丝刀扭力过小torquemodel changed4None shield case&fix FFC holder& 松动，摇晃时有杂音4用扭力计控制扭力每天或换机种时检查扭力无 stick cushion dustproof (ST: A-03) slide occurred due to 6screw driver torque too big2use torque meter to controlcheck torque daily and when4None 10.机芯支架打螺丝&防护盖组装&tighten4螺丝刀扭力过大torquemodel changed无 FFC支架组装&防尘胶布贴附过紧，滑牙用扭力计控制扭力每天或换机种时检查扭力 ESD destroyelectrical function8operator not wearing 2 use ESD cleaner to get rid of ESD 1.daily check before line start2None ESD破坏failured7ESD band使用离子风机消除静电1.每天开始生产前检查4无 电器性能破坏作业员没有佩带静电带2.check ESD of operating areas 2.作业环境静电检查 forget to fix FFC holder NG assembly7miss operating21.training operator100% visual double check 4None FFC支架漏装错误装配4操作错误 1.培训作业员100%双重目视检查7无 2.process sheet 2.作业指导书 forget to stick cushionNG assembly7miss operating21.training operator100% visual check 4None dustproof to bracket错误装配4操作错误1.培训作业员100%目视检查8无 漏贴防尘胶布至机芯支架2.process sheet 2.作业指导书 not combine two of NG assembly7miss operating21.training operator100% visual check 4None dustproof completely错误装配4操作错误,操作后未做压紧动作1.培训作业员100%目视检查8无 防尘胶布接合处不紧密2.process sheet update 2.修改作业指导书(追加NG和OK品 FFC fixing NG function error7miss operating2None4None 排线组装不到位功能不良操作错误无2无 not fix FFC steady function error7miss operating21.training operator4None FFC未固定功能不良操作错误 1.培训作业员6无 2.process sheet 2.作业指导书check by fixture 用治具检查 FFC holderNG fixing7miss operating21.培训作业员100%目视检查4None 排线未放入排线支架错误装配4操作错误2.process sheet8无 2.作业指导书 3 using fixture 3 应用治具进行固定 sheet which is used tofunction error8miss operating2training operator100% visual inspection4none connect FFC and main PCB 功能不良(机芯不动作)7操作错误,操作后未做压紧动作培训作业员100%目视检查8无 is not sticked firmlyadd this item as notice point FFC与基板连接胶布未贴紧into process sheet 将此项目作为作业注意点追加至 作业指导书 100% double visual check and make a mark on ok product 双重目视检查和打点确认 check by fixture 用治具检查 100% double visual check and make a mark on ok product 双重目视检查和打点确认 42 56 48 56 48 32 56 64 56 56 56 2 2 5 5 5 5 样式:RF-PT-03,050705 Page 6 of 19 Co.,Ltd.Co.,Ltd.(PROCESS FMEA)(PROCESS FMEA) Item项目名称:Page no.页码：共19页 Model Year/Vehicle:Responsibility责任部门：Prepared by制作： Core Team核心小组:Key Date关键日期： 过程项目潜在的潜在的严S 级潜在的频O现行制程预防控制现行制程侦测措施难DR建议的措施责任与目标效果确认Action Results &功能要求失效模式失效结果重E失效原因与机理度CCurrent ControlCurrent Control检ePRecommended完成日期SODR Process DescpriptionPotentialPotential度V 别Potential数CPreventionDetection度tNAction(s)Res.&Tar.采取的措施eceP &Process Purpose Failure ModeEffect(s) of FailureCause(s) of FailureCompletion Date Action TakenvctN 有限公司有限公司工 程 潜 在 的 失 效 模 式 与 效 果 分 析工 程 潜 在 的 失 效 模 式 与 效 果 分 析 C L A S S 风 险 优 先 率 FMEA date日期（编制）： 11. fix assy module to chassis ESD destroyelectrical function8operator not wearing 2 use ESD cleaner to get rid of ESD 1.daily check before line start2None &heat sink preparationESD破坏failured7ESD band使用离子风机消除静电1.每天开始生产前检查4无 11.机芯模块组装至底盖&电器性能破坏作业员没有佩带静电带2.operation condition ESD check 散热板准备2.作业环境静电检查 (ST:A-04)screw loose/tightenrattle noise heard when6screw driver torque too small 2use torque meter to controlcheck torque daily and when4None 螺丝松动/过紧 shaking due to loose4螺丝刀扭力过小torquemodel changed无 松动，摇晃时有杂音用扭力计控制扭力每天或换机种时检查扭力 slide occurred due to 6screw driver torque too big2use torque meter to controlcheck torque daily and when4None tighten4螺丝刀扭力过大torquemodel changed无 过紧，滑牙用扭力计控制扭力每天或换机种时检查扭力 12.panel rear & heat sinkscrew loose/tightenrattle noise heard when6screw driver torque too small 2use torque meter to controlcheck torque daily and when4None screwing螺丝松动/过紧shaking due to loose4螺丝刀扭力过小torquemodel changed无 12.后盖&散热板打螺丝松动，摇晃时有杂音用扭力计控制扭力每天或换机种时检查扭力 (ST:A-05) slide occurred due to 6screw driver torque too big2use torque meter to controlcheck torque daily and when4None tighten4螺丝刀扭力过大torquemodel changed无 过紧，滑牙用扭力计控制扭力每天或换机种时检查扭力 skid of screw 螺丝打滑 rattle noise heard when shaking due to loose 机台摇晃时有杂音,螺丝不紧易 掉落 6 4 1 oprator isnt upright to lock screw 1 作业员没有垂直