HP Laserjet Enterprise M4555 Mfp M4555h Mfp M4555f Mfp M4555fskm Mfp Parts Catalog PDF Download

Service Manual & Parts List HP LJ Enterprise M4555 MFP, M4555h MFP, M4555f MFP, M4555fskm MFP;
This service manual and parts list is the full HP LJ Enterprise M4555 MFP, M4555h MFP, M4555f MFP, M4555fskm MFP Service Repair Manual.
This manual, HP LJ Enterprise M4555 MFP, M4555h MFP, M4555f MFP, M4555fskm MFP, is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your HP LJ Enterprise M4555 MFP, M4555h MFP, M4555f MFP, M4555fskm MFP copier.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of HP LJ Enterprise M4555 MFP, M4555h MFP, M4555f MFP, M4555fskm MFP photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

1) THEORY OF OPERATION
Basic operation
Sequence of operation (product)
Sequence of operation (scanner)
Formatter-control system
Sleep delay
Image Resolution Enhancement technology
Input/output
Memory
Hard disk
Random-access memory
Firmware
Nonvolatile memory
HP Memory Enhancement technology
CPU
PJL overview
PML
Control panel
Scanner interface
Engine-control system
DC controller PCA
Motors and fans
Motor and fan functions
Ambient-temperature detection
High-voltage power supply
Fuser control
Fuser temperature control
Fuser failure detection
Other functions
Low-voltage power supply
Overcurrent/overvoltage protection
Safety
Sleep mode
Power supply detection
Image-formation system
Print cartridge
Memory tag
Cartridge-presence detection
Toner detection
Electrophotographic process
1. Primary charge (conditioning)
2. Laser-beam exposure (writing)
3. Developing
4. Transfer
5. Separation
6. Fusing
7. Drum cleaning
Laser/scanner system
Laser/scanner assembly failure detection
Safety
Pickup, feed, and delivery system
Pickup-and-feed block
Cassette pickup
Cassette media-size detection and cassette-present detection
Cassette lift-up operation
Cassette media-presence detection
Multifeed prevention
Tray 1 pickup
Tray 1 media-presence detection
Fusing-switchback and delivery block
Fusing
Pressure roller pressurization and depressurization control
Switchback and delivery control
Face-down delivery
Face-up delivery
Output bin media-full detection
Duplex block
Duplex side registration adjustment operation
Jam detection
No pick jam 1
No pick jam 2
No pick jam 3
Feed stay jam
Fuser delay jam
Fuser stay jam
Fuser wrap jam
Fuser output delay jam 2
Fuser output stay jam 2
Duplex re-pickup jam 1
Fuser output delay jam 3
Fuser output stay jam 3
Residual paper jam
Door open jam
Other functions
Tray 3 (1 x 500-sheet feeder)
500-sheet feeder motor control
500-sheet feeder pickup and feed
Cassette media-size detection and cassette presence detection
Cassette lift-drive operation
Jam detection
Additional trays
Motor control
Paper-deck pickup and feed operation
Cassette media-size detection and cassette presence detection
Cassette lift-drive operation
Jam detection
HP stapling mailbox
Motor control
Failure detection
Delivery operation
Staple operation
Stapler
Output bin 3 lift operation
Stacker mode
Mailbox/job separator mode
Jam detection
Automatic delivery
Laser/scanner system
Document feeder/scanner assembly
Scanner subsystem
Document feeder/scanner motor and fan control
Legal detection sensor
Fan timing sequence
Optical assembly operation
Image data path
Document feeder/scanner paper path and sensors
Document feeder pickup mechanism

2) REMOVAL AND REPLACEMENT
Introduction
Removal and replacement strategy
Electrostatic discharge
Required tools
Service approach
Before performing service
After performing service
Post-service test
Print-quality test
Print cartridge
Staple cartridge (for models with a stapler/stacker)
Control panel
Transfer roller
Output bin and bin base assembly
Duplex accessory
Fuser-entrance guide
Remove the fuser-entrance guide
Fuser
Remove the fuser
Tray 1 separation roller
Envelope feeder cover
Tray 1 pickup and feed rollers
Tray 2, 3, 4, or 5 pickup, feed, and separation rollers
Scanner filter cover and scanner filter
Interface formatter PCA
Hard drive
Remove the SSD
Remove the encrypted HDD
Installing a replacement hard drive
HDD firmware upgrade
SSD firmware upgrade
Fax accessory PCA
Document feeder tray extender
Document feeder pickup roller cover
Document feeder pickup roller
Document feeder pickup roller pad and spring
Covers and document feeder
Identification and location (product base)
Scanner rear cover
Tray 1 cover
Cassette-door-open detection switch
Left-rear corner cover
Remove the left-rear corner cover
Front cover
Front-right cover
Remove the front-right cover
Front-upper cover
Remove the front-upper cover
Image scanner right cover
Image scanner cable cover
Rear-right cover
Rear-left cover
Remove the rear-left cover
Rear-top cover
Remove the rear-top cover
Right-lower door
Remove the right-lower cover
Document-feeder hinge cover
Remove the document-feeder hinge cover
Reinstall the document-feeder hinge cover
Document feeder
Remove the document feeder
Image scanner left cover
Remove the image scanner left cover
Main assemblies
Registration assembly
Switchback upper guide assembly
Reinstall the switchback upper guide assembly
Switchback assembly
Remove the switchback assembly
Laser/scanner assembly
Remove the laser/scanner assembly
Cartridge sensor assembly
Remove the cartridge sensor assembly
Environmental sensor
Remove the environmental sensor
DC controller shield-plate assembly
Remove the DC controller shield-plate assembly
DC controller
Remove the DC controller
Tray 1 pickup assembly
Remove the Tray 1 pickup assembly
Connector PCA
Remove the connector PCA
Feed motor (M101)
Remove the feed motor
Drum motor (M102)
Remove the drum motor
Fuser motor (M299)
Remove the fuser motor
Main fan (FN101)
Remove the main fan
Reinstall the main fan
Laser/scanner fan (FN102)
Remove the laser/scanner fan
Reinstall the laser/scanner fan
Cartridge front-side fan (FN103)
Remove the cartridge front-side fan
Reinstall the cartridge front-side fan
Low-voltage power supply fan (FN104)
Remove the low-voltage power supply fan
Reinstall the low-voltage power supply fan
Switchback fan (FN105)
Remove the switchback fan
Reinstall the switchback fan
Cartridge fan (FN301)
Remove the cartridge fan
Reinstall the cartridge fan
Interlock switch (SW101)
Remove the interlock switch
Output accessory detection switch (SW104)
Remove the output accessory detection switch
Low-voltage power supply
Remove the low-voltage power supply
Cassette lifter assembly
Remove the cassette lifter assembly
Lifter drive assembly
Remove the lifter drive assembly
Engine power supply
Remove the engine power supply
Feed roller assembly
Remove the feed roller assembly
Pickup drive assembly
Remove the pickup drive assembly
Cassette pickup assembly
Remove the cassette pickup assembly
Document feeder
Paper present flag
Document feeder scanner lid
Remove the document feeder scanner lid
Reinstall the document feeder scanner lid
Document feeder front cover
Document feeder rear cover
Document feeder jam-access cover
Remove the document feeder jam-access cover
Document feeder tray assembly
Remove the document feeder tray assembly
Document feeder internal assembly
Remove document feeder internal assembly
Document feeder PCA
Remove the document feeder PCA
Document feeder cable
Remove the document feeder cable
Reinstall the document feeder cable
Document feeder left hinge
Remove the document feeder left hinge
Document feeder right hinge
Remove the document feeder right hinge
Document feeder fan
Remove the document feeder fan
Document feeder motor
Remove the document feeder motor
Document feeder motor
Remove the document feeder motor
Document feeder open sensor
Remove the document feeder open sensor
Document feeder jam access plate
Remove the document feeder jam access plate
Base assembly
Remove the base assembly
Scanner
Scanner assembly
Remove the scanner
Scanner connector board (SCB) PCA
Remove the SCB PCA
Scanner release assembly
Remove the scanner release assembly
Scanner 24 V and communication cable
Remove the scanner 24 V and communication cable
Tub top
Remove the tub top
Interconnect board and size sensor
Remove the interconnect board and size sensor
Inverter
Remove the inverter
Inverter fan
Remove the inverter fan
Optical assembly
Remove the optical assembly
Motor assembly
Remove the motor assembly
Scanner fan
Remove the scanner fan
Optional 500-sheet paper feeder assembly
Rear cover (500-sheet paper feeder)
Right-front cover (500-sheet paper feeder)
Left cover (500-sheet paper feeder)
Remove the left cover (500-sheet paper feeder)
Right cover (500-sheet paper feeder)
Remove the right cover (500-sheet paper feeder)
Front cover (500-sheet paper feeder)
Pickup assembly (500-sheet paper feeder)
Remove the pickup assembly (500-sheet paper feeder)
Lifter assembly (500-sheet paper feeder)
Remove the lifter assembly (500-sheet paper feeder)
Lifter-drive assembly (500-sheet paper feeder)
Remove the lifter-drive assembly (500-sheet paper feeder)
Pickup motor assembly (500-sheet paper feeder)
Remove the pickup motor (500-sheet paper feeder) assembly
Controller PCA (500-sheet paper feeder)
Remove the controller PCA (500-sheet paper feeder)
Optional paper feeder assemblies (1 x 500-sheet and 3 x 500-sheet)
Front door (optional paper feeder)
Rear cover (optional paper feeder)
Right-front cover (optional paper feeder)
Right door (optional paper feeder)
Left cover (optional paper feeder)
Remove the left cover (optional paper feeder)
Right cover (optional paper feeder)
Remove the right cover (optional paper feeder)
Rear-right cover (optional paper feeder)
Remove the rear-right cover (optional paper feeder)
Pickup assembly (optional paper feeder)
Remove the pickup assembly (optional paper feeder)
Lifter assembly (optional paper feeder)
Remove the lifter assembly (optional paper feeder)
Lifter-drive assembly (optional paper feeder)
Remove the lifter-drive assembly (optional paper feeder)
Pickup motor assembly (optional paper feeder)
Remove the pickup motor assembly (optional paper feeder)
Controller PCA (optional paper feeder)
Remove the controller PCA (optional paper feeder)
Stapler/stacker
SSMBM front cover
SSMBM rear cover
SSMBM handle assembly
Remove the SSMBM handle assembly
SSMBM top cover
Remove the SSMBM top cover
SSMBM output bin 3
SSMBM output bin assembly cover
Remove the SSMBM output bin assembly cover
SSMBM PCA
SSMBM output bin sensor PCA
Remove the SSMBM output bin sensor PCA
SSMBM stapler assembly
Remove the SSMBM stapler assembly
SSMBM jogger assembly
Remove the SSMBM jogger assembly
SSMBM output bin solenoid
Remove the SSMBM output bin solenoid
SSMBM output bin assembly
Remove the SSMBM output bin assembly
SSMBM stage top assembly
Remove the SSMBM stage top assembly
Reinstall the SSMBM stage top assembly
SSMBM stage assembly
Remove the SSMBM stage assembly
SSMBM output bin 3 drive assembly
Remove the SSMBM output bin 3 drive assembly

3) PROBLEM SOLVING
Solve problems checklist
Administration Menu Map
Current settings page
Troubleshooting process
Problem-solving flowchart
Determine the problem source
Pre-troubleshooting checklist
Troubleshooting flowchart
Power subsystem
Power-on checks
Power-on troubleshooting overview
Control-panel checks
Scanning subsystem
Tools for troubleshooting
Component diagnostics
LED diagnostics
HP Jetdirect Inside LEDs
Heartbeat LED
Connectivity LED
Fax LED (fax models only)
Engine diagnostics
Early boot diagnostic test
Engine test
Formatter test
Half self-test
Drum rotation test
Paper-path test
Manual sensor test
SW1 right lower door
SW105 right upper door
SW101 cartridge door (top cover)
SR10 Tray 5 feed
SR7 Tray 4 feed
SR4 Tray 3 feed
PS102 pre-feed
PS103 TOP
PS106/108 paper width
PS700/PS699 fuser output
PS110 intermediate switchback
PS111 inverter media stay
PS113 duplex refeed
PS112 output
PS104 output bin full
Tray/Bin manual sensor test
PS1802 envelope feeder paper
PS114 Tray 1 paper
PS101 Tray 2 paper
PS107/PS907 Tray 2 paper surface
SW102 Tray 2 paper size
SR3 Tray 3 paper
SR1/SR2 Tray 3 paper surface
SW2 Tray 3 paper size
SR4 Tray 3 feed
SR6 Tray 4 paper
SR5/SR8 Tray 4 paper surface
SW3 Tray 4 paper size
SR7 Tray 4 feed
SR11 Tray 5 paper
SR9/SR12 Tray 5 paper surface
SW4 Tray 5 paper size
SR10 Tray 5 feed
PS104 output bin full
SW1 power switch
SW103 face up bin
SW104 output accessory
SW700 engine test
Paper path sensor test
Print/stop test
Scanner tests
Scanner component tests
Scanner sensor tests
Document feeder paper present sensor
Document feeder Y (length) sensor
Document feeder jam cover sensor
Flatbed Y (length) sensor
Flatbed cover angle sensor
Flatbed cover sensor
Document feeder registration sensor
Document feeder exit sensor
Document feeder read sensor
Component tests
Control-panel tests
Component test (special-mode test)
Stapler/stacker
Diagrams for troubleshooting
Block diagrams
Sensors
Switches (product base)
Solenoids (product base)
Clutch (product base)
Motors
Fans (product base)
Main assemblies
Main PCAs (product base)
Rollers (product base)
DC controller connections
Scanner controller board (SBC) connectors
General timing chart
General circuit diagrams
Internal print-quality test pages
Print-quality-troubleshooting pages
Cleaning page
Configuration page
Configuration page
HP embedded Jetdirect page
Embedded protocol page
Finding important information on the configuration pages
Print-quality troubleshooting tools
Repetitive defects ruler
Control panel menus
Administration menu
Reports menu
General Settings menu
Copy Settings menu
Scan/Digital Send Settings menu
Fax Settings menu
Open From USB Settings menu
Print Settings menu
Print Options menu
Display Settings menu
Manage Supplies menu
Manage Trays menu
Stapler/Stacker Settings menu
Network Settings menu
Troubleshooting menu
Device Maintenance menu
Backup/Restore menu
Calibrate/Cleaning menu
USB Firmware Upgrade menu
Service menu
Interpret control-panel messages, status-alert messages, and event code errors
10.0X.Y0 Supply memory error
10.23.50
10.23.51
10.23.52
10.23.70 Printing Past Very Low
10.XX.33 Used Supply In Use
10.XX.34 Used Supply In Use
10.XX.40 Genuine HP Supplies Installed
10.XX.41 Unsupported Supply In Use
10.XX.70 Printing past very low
10.YY.15 Install
10.YY.35 Incompatible
11.00.YY Internal clock error
13.00.00
13.00.EE
13.A3.FF
13.D3.DZ
13.E5.FF
13.EA.EE
13.EE.FF
13.FF.EE
13.FF.FF
13.WX.EE
13.WX.FF
13.WX.YZ Fuser Area Jam
13.WX.YZ Fuser wrap jam
13.WX.YZ Jam below control panel
13.WX.YZ Jam in lower bin area
13.WX.YZ Jam in Tray 1
13.WX.YZ Jam in Tray
13.WX.YZ Jam inside envelope feeder
13.WX.YZ Jam inside left cover
13.WX.YZ Jam inside right door
13.WX.YZ Jam inside top cover
13.WX.YZ Jams inside lower right door
14.00.XX
20.00.00 Insufficient memory: To continue, touch OK"
21.00.00 Page Too Complex
30.01.YY Scanner Failure
31.01.02 Jam in document feeder
31.01.03 Document feeder pick error
31.01.0X
32.08.AX
32.1C.XX
32.21.00
33.01.XX
33.XX.YY Used board/disk
40.00.01 USB I/O buffer overflow To continue