HP_LJ_M125-126-127-128_RM打印机维修手册中文版.docx

LASERJETPROMFP

RepairManual

M125-126 M127-128 M127-128

HPLaserJetProMFPM125,M126,M127,M128

RepairManual

Conventionsusedinthisguide

NOTE: Notesprovideimportantinformationtoexplainaconceptortocompleteatask.

CAUTION:Cautionsindicateproceduresthatyoushouldfollowtoavoidlosingdataordamagingtheproduct.

WARNING!Warningsalertyoutospecificproceduresthatyoushouldfollowtoavoidpersonalinjury,catastrophiclossofdata,orextensivedamagetotheproduct.

ENWW iii

Tableofcontents

Removalandreplacement 1

Removalandreplacementstrategy 2

Introduction 2

Requiredtools 2

Typesofscrews 3

Serviceapproach 4

Beforeperformingservice 4

Afterperformingservice 4

Partsremovalorder 4

Removalandreplacementprocedures 5

Customer-replaceableparts 5

Tonercartridge 5

Inputtray 6

Short-mediaextender 7

Pickuproller 7

Separationpad 10

Handset(M128fpmodelonly) 11

Coversandexternalcomponents 12

Paper-deliverytray(outputbinextension) 12

Leftcover 13

Removetheleftcover 13

Scannerassembly 14

Removethescannerassembly 14

Cartridgedoor 17

Removethecartridgedoor 17

Frontcoverandcontrol-panelassembly 19

Removethefrontcover 19

Removethecontrol-panelassembly 22

Rightcover 24

Removetherightcover 24

Topcoverandimagescannerlock 27

Removethetopcoverandimagescannerlock 27

ENWW v

Rearcover 29

Removetherearcover 29

Reinstalltherearcover 30

Mainassemblies 31

Transferroller 31

Left-sidePCAs 33

WirelessPCA(wirelessmodelsonly) 35

FormatterPCA 37

FaxPCA(faxmodelsonly) 42

Laserscannerassemblyandcable 43

Removethelaserscannerassemblyandcable 43

MotorPCAandmotor 45

RemovethemotorPCAandmotor 45

EnginecontrollerPCA 51

RemovetheenginecontrollerPCA 51

ReinstalltheenginecontrollerPCA 57

FuseranddeliverysensorPCA 60

RemovethefuseranddeliverysensorPC