HP CZ195ABGJ User Manual

LASERJET PRO 400Repair ManualM401

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Paper feeder main body (1 of 2)Figure 2-13 Paper feeder main body (1 of 2)(SL4)(J1202)A01A08A07A07A07A09A04A03A02A17A07A07A14A04A06A05A07A18A07A13A07

Table 2-17 Paper feeder main body (1 of 2)Ref Description Part number Qty1 Paper pickup gear assembly RM1-7360-000CN 12 Solenoid RK2-0426-000CN 1ENWW

Paper feeder main body (2 of 2)Figure 2-14 Paper feeder main body (2 of 2)(J1205)(J1203)(J1205)(PS1201)A06A06A05A07A07A08A12A04A04A13A04A04A01A03A02A

Table 2-18 Paper feeder main body (2 of 2)Ref Description Part number Qty1 Paper feeder pickup roller assembly RM1-9168-000CN 12 Paper feeder driver

Alphabetical parts listTable 2-19 Alphabetical parts listDescription Part number Table and pageArm, control panel RC3-2584-000CNCovers, panels, and d

Table 2-19 Alphabetical parts list (continued)Description Part number Table and pageCover, left RM1-9123-000CNCovers, panels, and doors(touchscreen c

Table 2-19 Alphabetical parts list (continued)Description Part number Table and pageEngine controller assembly (DC controller) — 220V RM1-9165-000Int

Table 2-19 Alphabetical parts list (continued)Description Part number Table and pagePaper feeder separation pad holder assembly RM1-6303-000CNPaper f

Table 2-19 Alphabetical parts list (continued)Description Part number Table and pageTransfer roller assembly RM1-9175-000CNInternal components (3 of

Numerical parts listTable 2-20 Numerical parts listPart number Description Table and pageCF148-60001 Formatter PCA (HP LaserJet M401a, M401d models)P

List of tablesTable 2-1 Order parts, accessories, and supplies ... 60

Table 2-20 Numerical parts list (continued)Part number Description Table and pageRC3-2545-000CN Lever, power supply buttonCovers, panels, and doors(t

Table 2-20 Numerical parts list (continued)Part number Description Table and pageRM1-8807-000CN Sensor assemblyInternal components (3 of 5)on page 75

Table 2-20 Numerical parts list (continued)Part number Description Table and pageRM1-9149-000CN Control-panel assemblyCovers, panels, and doors(LCD c

Table 2-20 Numerical parts list (continued)Part number Description Table and pageRM1-9180-000CN Cover, topCovers, panels, and doors(LCD control panel

98 Chapter 2 Parts and diagrams ENWW

IndexAaccessoriesordering 60after-service checklist 4Ccartridgeordering 60part number 60cautions iiichecklistsafter-service 4preservice 3conventions,

tools, required 3top cover 13, 16replacingduplexing-paper-feed assembly(duplex model) 32face-down-drive assembly (basemodel) 32main motor 37paper-pick

© 2012 Hewlett-Packard Development Company, L.P.www.hp.com*CF270-90977**CF270-90977*CF270-90977

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List of figuresFigure 1-1 Phillips and Pozidriv screwdriver comparison ... 3F

Figure 1-33 Remove the laser scanner assembly (2 of 2) ... 27Figure 1-34 Remove

Figure 1-74 Remove the optional paper feeder driver PCA (1 of 2) ... 54Figure 1-75 Remove the

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1 Removal and replacement●Removal and replacement strategy●Service approach●Removal and replacement proceduresENWW 1

Removal and replacement strategy WARNING! Turn the product off, wait 5 seconds, and then remove the power cord beforeattempting to service the product

Required tools ●#2 Phillips screwdriver with a magnetic tip and a 152 mm (6 in) shaft length●Small flatblade screwdriver●Needle-nose pliers●ESD mat (i

●Remove the toner cartridge.●Remove the Tray 2 cassette.After performing service●Plug in the power cable.●Reinstall the toner cartridge.●Reinstall the

Parts removal orderUse the following diagram to determine which parts must be removed before removing other parts.Figure 1-2 Parts-removal orderCompo

Removal and replacement proceduresRollersMultipurpose (MP) tray pickup roller1. Open the toner cartridge door, and then remove the toner cartridge.2.

3. On the left side of the product, release the innermost tab (callout 1) at the center of the gear, andthen remove the gear (callout 2).NOTE: The gea

5. Move the pickup roller shaft to the left to free the right end of the shaft from the holder, and thenremove the pickup roller shaft assembly to exp

6. Pull up on the top edge of the separation pad to release it from the product.Figure 1-8 Remove the MP tray separation pad (5 of 5)Reinstallation t

3. Push the pickup roller to the left to release the right side roller, and then pull the roller out of theproduct.Figure 1-10 Remove the Tray 2 or T

Covers and control panelLeft coverNOTE: No tools are necessary to remove this cover. However, a small flat-blade screwdriver mightbe helpful in releas

Right coverNOTE: No tools are necessary to remove this cover. However, a small flat-blade screwdriver mightbe helpful in releasing some of the tabs th

Top cover with LCD control-panel module1. Remove the following components:●Tray 2 cassette●Right cover. See Right cover on page 12.●Left cover. See Le

HP LaserJet Pro 400 M401 Printer SeriesRepair Manual

5. On the top of the top-cover assembly, remove two screws (callout 1).Figure 1-16 Remove the top-cover assembly and LCD control-panel module (3 of 3

2. On the underside of the top cover assembly, disconnect the flat cable (callout 1), and then releasethe two tabs (callout 2) at the back of the cont

Top cover with touchscreen control-panel module1. Remove the following components:●Tray 2 cassette●Right cover. See Right cover on page 12.●Left cover

4. On the right side of the product, remove two screws (callout 1).Figure 1-20 Remove the top-cover assembly (2 of 3)15. On the top-cover assembly, r

Touchscreen control panel1. Remove the following components:●Tray 2 cassette●Right cover. See Right cover on page 12.●Left cover. See Left cover on pa

●Spring (callout 4)●Sheet (callout 5)Figure 1-23 Remove the touchscreen control panel (2 of 3)123454. Pull the back of the control panel assembly awa

Rear cover, rear door, and feed assemblyCAUTION: The fuser can be hot while the product is in use. Wait for the fuser to cool before workingin that ar

4. At the rear of the product, remove five screws (callout 1), release one tab (callout 2) near thebottom corner, and release two tabs (callout 3) fro

6. Duplex models only: There are two hinge pins (callout 1). Release the shorter left pin first, andthen separate the rear cover and rear door assembl

Cartridge door and front cover assemblyNOTE: The cartridge door assembly includes the cartridge door, Tray 1, and the front cover.1. Remove the follow

Copyright and License© 2012 Copyright Hewlett-PackardDevelopment Company, L.P.Reproduction, adaptation, or translationwithout prior written permission

4. Remove two screws (callout 1).Figure 1-29 Remove the cartridge door assembly and front cover (2 of 4)15. Pull the bottom of the assembly up in ord

6. Release two hinge pins (callout 1), and then separate the front cover (callout 2) from the cartridgedoor assembly (callout 3).Figure 1-31 Remove t

Main assembliesLaser scanner assemblyWARNING! ESD sensitive component.CAUTION: Do not bend or fold the flat flexible cables (FFCs) during removal or

4. Remove four screws (callout 1), and then remove the laser scanner assembly.Figure 1-33 Remove the laser scanner assembly (2 of 2)1Registration rol

3. On the left side of the product, release one tab (callout 1), and then remove the gear.Figure 1-34 Remove the registration assembly (1 of 3)14. In

5. Remove four screws (callout 1), and then remove the gear cover (callout 2).Figure 1-36 Remove the registration assembly (3 of 3)3 216. Slightly ra

3. On the right side of the product, remove three gears (callout 1).Figure 1-37 Remove the fuser (1 of 5)14. Remove two screws (callout 1).Figure 1-3

5. At the rear of the product, disconnect seven connectors (callout 1), and then pull the cable guide(callout 2) away from the product.Figure 1-39 Re

7. Disconnect three connectors (callout 1), remove two screws (callout 2), and then remove the fuser(callout 3).Figure 1-41 Remove the fuser (5 of 5)

3. On the right side of the product, remove the grounding spring (callout 1), disconnect fiveconnectors (callout 2), remove two screws (callout 3), an

Conventions used in this guideTIP: Tips provide helpful hints or shortcuts.NOTE: Notes provide important information to explain a concept or to comple

SolenoidsTray 1 solenoid1. Remove the following components:●Tray 2 cassette●Left cover. See Left cover on page 11.2. Open the toner cartridge door and

4. Remove one screw (callout 1), and then remove the Tray 1 pickup solenoid.Figure 1-45 Remove the Tray 1 pickup solenoid (2 of 2)1Duplex solenoidNOT

3. On the right side of the product, disconnect one connector (callout 1) from the connecting PCA,and then remove one screw (callout 2).Figure 1-46 R

Motors and fansMain motor1. Remove the following components:●Tray 2 cassette●Right cover. See Right cover on page 12.●Left cover. See Left cover on pa

4. Release the cables (callout 1) from the cable guides (callout 2), remove one screw (callout 3), andthen remove the cable guide (callout 4).Figure 1

6. Remove three black-screws (callout 1) and one silver-screw (callout 2), release two tabs (callout 3),and then remove the main motor (callout 4) and

3. On the right side of the product, remove the grounding spring (callout 1), disconnect oneconnector (callout 2), release two tabs (callout 3), and t

Printed circuit-board assemblies (PCAs)Engine controller assembly (DC controller) PCAWARNING! ESD sensitive component.CAUTION: When removing the engi

2. At the rear of the product, disconnect seven connectors (callout 1).Figure 1-54 Remove the engine controller assembly (1 of 9)113. Remove one scre

4. Disconnect seven connectors (callout 1).Figure 1-56 Remove the engine controller assembly (3 of 9)115. Release the cables (callout 1) from the cab

iv Conventions used in this guide ENWW

6. On the right side of the product, remove one screw (callout 1).Figure 1-58 Remove the engine controller assembly (5 of 9)17. On the left side of t

8. Remove three screws (callout 1).Figure 1-60 Remove the engine controller assembly (7 of 9)19. On both sides of the product, use a small flat blade

10. Pull the cable (callout 1) and the flat cable (callout 2) into the product chassis, and then carefullyslide the engine controller assembly (callou

2. On the left side of the product, remove two screws (callout 1) on the USB PCA, and then pull thePCA away from the product.Figure 1-63 Remove the U

Formatter PCAWARNING! ESD sensitive component.1. Remove the following components:●Tray 2 cassette●Left cover. See Left cover on page 11.●Wireless PCA

2. On the left side of the product, release two tabs (callout 1), pull the lower left-hand corner of thePCA to disconnect the connector on the back of

2. On the back of the front cover, use a small flat-blade screwdriver to release two tabs (callout 1) toseparate the two pieces of the cover.Figure 1-

4. Release one tab (callout 1), and then pull the PCA out of the front cover.Figure 1-69 Remove the power-switch PCA (3 of 3)1Connecting PCAThe conne

Miscellaneous partsTransfer rollerCAUTION: Do not touch the sponge surface of the roller unless you are replacing the roller. Skin oilson the roller c

2. On the left side of the product, release the tab (callout 1) at the center of the gear, and thenremove the gear (callout 2).Figure 1-72 Remove the

Table of contents1 Removal and replacement ... 1Removal

Optional paper feeder right cover▲Starting at the back of the unit, release six tabs (callout 1), and then slide the right cover towardthe front of th

3. Disconnect three connectors (callout 1), and then remove one screw (callout 2) to remove thedriver PCA.Figure 1-75 Remove the optional paper feede

3. On the driver PCA, disconnect one connector (callout 1).Figure 1-77 Remove the optional paper feeder paper sensor PCA (2 of 4)14. At the front of

5. Remove one screw (callout 1), and then release the PCA cable from the cable guides to removethe sensor PCA.Figure 1-79 Remove the optional paper f

58 Chapter 1 Removal and replacement ENWW

2 Parts and diagramsNOTE: In this chapter, part numbers are listed only for available replaceable parts.●Order parts by authorized service providers●H

Order parts by authorized service providersOrder replacement partsTable 2-1 Order parts, accessories, and suppliesOrder supplies and paper www.hp.com

Table 2-4 Whole-unit replacement part numbers (continued)Item Description Part numberHP LaserJet Pro 400 M401d Printer 220v WUR EMEA CF274-69001 (exc

How to use the parts lists and diagramsThe figures in this chapter show the major subassemblies in the product and their component parts. Aparts list

Assembly locationsHP LaserJet M401a, M401n, M401d modelsFigure 2-1 Assembly locations: HP LaserJet M401a, M401n, M401d models1 2 3 4 567891011Table 2

Tray 1 solenoid ... 34Duplex solenoid ...

HP LaserJet M401dn and M401dw modelsFigure 2-2 Assembly locations: HP LaserJet M401dn and M401dw models1 2 3 4 567891011Table 2-6 Assembly locations

Optional paper feederFigure 2-3 Assembly locations: optional paper feeder123Table 2-7 Assembly locations: optional paper feederItem Description Item

Covers, panels, and doorsFigure 2-4 Covers, panels, and doors (LCD control panel models)SIMPLEX MODELDUPLEX MODEL(J1001)(J215)A02A01A0243168352111097

Table 2-8 Covers, panels, and doors (LCD control panel models)Ref Description Part number Qty1 Cartridge door assembly RM1-9145-000CN 12 Cover, top R

Figure 2-5 Covers, panels, and doors (touchscreen control panel models)(J1001)(J2)(J215)A02A01A02A02A08A09A08A07A06A05A03A044168352109712111314A10A11

Table 2-9 Covers, panels, and doors (touchscreen control panel models)Ref Description Part number Qty1 Cartridge door assembly RM1-9145-000CN 12 Cove

Internal assembliesFigure 2-6 Internal components (1 of 5)AAA03A07A06A05A02A04A16A17A15A12A13A14A14A03A09A01A03A10A11A18A08170 Chapter 2 Parts and

Table 2-10 Internal components (1 of 5)Ref Description Part number Qty1 Fuser (110V) RM1-8808-000CN 11 Fuser (220V) RM1-8809-000CN 1ENWWInternal asse

Figure 2-7 Internal components (2 of 5)TOUCHSCREENMODEL(J101)(M1)(J1202)(J1202)(J202)A20A17A13A14A15A18A16A15A19A11A02A26A25A23A24A15A38A15A10A15A37A

Table 2-11 Internal components (2 of 5)Ref Description Part number Qty1 Main motor assembly RM1-9042-000CN 12 Bushing RC2-8263-000CN 13 Separation pa

Index ... 99ENWW vii

Figure 2-8 Internal components (3 of 5)(J5)(J801)(J802)(J1103)(J581)(J203)A12A05A07A08A22A23A06A09A10A02A03A01A13A13A04A18A25A20A19A21A26A11A12A15A13

Table 2-12 Internal components (3 of 5)Ref Description Part number Qty1 Cable, flexible, flat RK2-4452-000CN 12 Paper feed guide assembly RM1-9122-00

Figure 2-9 Internal components (4 of 5)(SL1)(SW301)(J6)(SL2)(J1104)(FM1)(J1105)(J207)(J1205D)(J211)(J1102)(J207)(J1205F)A09A24A23A01A08A22A04A19A12A1

Table 2-13 Internal components (4 of 5)Ref Description Part number Qty1 Fan RK2-4418-000CN 12 Connecting PCA RM1-9047-000CN 14 Solenoid RK2-2731-000C

Figure 2-10 Internal components (5 of 5)DUPLEX MODELDUPLEX MODELUSB MODELDUPLEX MODELSIMPLEX MODELAA(FT3)(SL3)(J1101)(J7)(FT2)(FT1)A01A08A03A02A01A01

Table 2-14 Internal components (5 of 5)Ref Description Part number Qty1 Engine controller assembly (DC controller) — 110V RM1-9164-000CN 11 Engine co

Figure 2-11 PCA location12345680 Chapter 2 Parts and diagrams ENWW

Table 2-15 PCA locationRef Description Part number Qty1 Formatter PCA (HP LaserJet M401a, M401d models) CF148-60001 11 Formatter PCA (HP LaserJet M40

Input devices500-sheet paper feederPaper feeder coversFigure 2-12 Paper feeder covers13282 Chapter 2 Parts and diagrams ENWW

Table 2-16 Paper feeder coversRef Description Part number Qty1 Cover, left RC3-2618-000CN 12 Cover, right RM1-9316-000CN 13 Cover, rear RC3-2621-000C