Nespresso Essenza C91 - Troubleshooting; Machine Receipt Inspection and Fault Finding

14
ServiceManualC91/D91 enVersion1.0
Troubleshooting
Checkingthemachineonreceipt
Thereceiptcheckenablesyoutorapidly
locatefaultsonthemachineandtoinitiate
appropriaterepairaction.
Followthecheckprocedure.
Repairanyfaultsfoundandcheckifthe
machineisoperatingperfectly.
Checkprocedure Symptoms Action/repairwork Furtheraction/repairwork
1Checkapplianceforvisible
damage
1.1Partsofhousingbrokenordamaged
YESReplacepartsifnecessary
NOGotopoint1.2
1.2Mainscabledamaged
YESReplacemainscable
NOPlugmachinetothemainsandgotopoint2.1
2Checkmechanicalelements
2.1Closinghandleworkscorre ctly
YESGotopoint2.2
NOItishardorimpossibletoclosetheclosinghandle
YESScrewonclosinghandlescrewsatdefined
torqueorreplaceCBU(seepage22)
NOReplacethe CBU
2.2Isthecapsulecorrectlyejected?
YESGotopoint3
NOReplaceTCBU
3Fillwatertank 3.1Watertankisleaking
YESReplacewatertank
NOGotopoint4
4PressOn/Offbuttontoperform
automaticselftest
4.1Machineisnotworking(nofunction)
YESa)Checkifmainsca ble isfunctional
YESGotopointb)
NOReplaceit
YESb)Che ckifOn/Offbuttonisfunctional
YESGotopointc)
NOReplaceit
YESc)Checkifpumpisworking(presscoffee
button)
YESGotopointf)
NOGotopointd)
YESd)Che ckifcoffeebuttonisfunctional
YESGotopointe)
NOReplaceit
YESe)Checkifpump'sthermalfuse(128°C)is
defective
YESReplacepump(seepage20)
NOGotopointf)
YESf)Checkifthermoblock’sthermalfuse(167°C)
isdefe ctive
YESReplacethermalfuseandifnecessary
thermoblocktoo(seepage19)
NOGotopointg)
YESg)Che ckifelectricalwiresarefunctional
YESReplaceelectronicmainboard(seepage
21)
NOReplacedefective (s)wire(s)
NOGotopoint4.2