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Detection(D)
Severity(S)
Percentage(P)
DFMEA(ME)
DFMEA(EE)
PartName:
ModelNo.:
Preparedby:
ReportNo.
Reviewedby:
Date:
Item
PartFunction
FailureMode
Cause
Effect
o
S
D
RPN
Action
Resp.
CompleteDate
Target
Actual
BrianCheng
DFMEA
RD
Cvision(HK)Ltd.
DesignFailureModeEffectAnalysisReport(DFMEA)
TALKBACK
1.Inputvoicedistortion.
2.Novoiceinput
Speaker
1.Nosoundoutput
2.Outputsounddistortion
1.Novoiceinput
2.Inputvoicedistortion.
1.Deflectedspeaker
2.BadsolderingontheNAU8814/I2S/I2CconnectiontotheCV2312
3.BadconnectionoftheSPK1
1.Deflectedmic
2.BadsolderingontheNAU8814/I2S/I2CconnectiontotheCV2312
Displaytemperaturetoohigh.Wrongdisplayofthetemperature
1.Temp.Humi.ICnotcorrectlysoldered
2.TempHumi.ICisstuckedwithdirt/liquidonthesensorarea
RD
Motorspinning
Motornotmoving
Motornotmovingcorrectly
Button
Buttonnotresponding
1.TachswitchSW1-6notsolderingcorrectly
2.WirebetweenKeyMainboardarenotconnectedcorrectly
3.SOCdidnotprogrammedcorrectly
NO/Wrongresponsefromthekeyfunction
1.MustcheckthekeyingcorrectnessusingATEcommandkey
2.ComparethekeywiringwiththeGoldenunit
Cannotdisplayallthecolor(Red/Yellow/Orange/Green/Blue/Purple/Loop)
1.Q3,Q4,Q27aremalfunction
2.LED1-4isnotsolderedcorrectly
3.SOCdidnotprogrammedcorrectly
1.MustchecktheLEDavaliabilityontheMainboardbyusingATEcommandred/blue/green=[0-1023]
2.ChecktheSOCversiononPCBAlevelusingATEcommandver
ProjectorLED
ProjectorLEDmalfunction
NoprojectorLED/currenttoohigh
1.OutputPOWERoftheWIFIisnotenough
2.incorrectlyUDID
3.TheWIFIrangeisnotenough
1.ColdsloderingontheRFportofCV2312
2.Unitswithoutcalibration
3.Antennanotsolderwell
No/BadWIFIconnection
CARE200
Poweradaptorshortcircuitorpowersupplyportionshortcircuit
RFcommunication
RD
IndicatorLED
IndicationLEDmalfunction
1.N79E814isnotpr
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