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CC421A Color LaserJet Enterprise CM4540fskm MFP

HP Color LaserJet Enterprise CM4540fskm MFP (CC421A)

MFG Part Number: CC421A 42ppm black, 42ppm color, 600 x 600 DPI, Ethernet, USB 2.0

HP Color LaserJet CM4540 MFP service manual

CC421A Service ManualView Service Manual Buy CC421A Service ManualBuy Printed Manual

Manual contents and shortcuts

Theory of operation
Basic operation
Sequence of operation
Engine-control system
DC controller
Fans
High-voltage power supply
Low-voltage power supply
Fuser control
Laser/scanner system
Laser/scanner failure
Protective-glass cleaners
Image-formation system
Image-formation process
Print cartridge
Developing-roller engagement and disengagement
Intermediate transfer belt (ITB) unit
Calibration
Pickup, feed, and delivery system
Pickup-and-feed unit
Fusing and delivery unit
Duplexing unit
Jam detection
Optional paper feeders
Motor control
Paper-feeder pickup and feed operation
Paper-size detection and cassette-presence detection
Paper-feeder cassette lift operation
Paper feeder jam detection
Document feeder/scanner assembly
Scanner subsystem
Document feeder/scanner motor and fan control
Fan timing sequence
Legal detection sensor sequence
Image data path
Optical assembly operation
Document feeder/scanner paper path and sensors
Document feeder pick mechanism
3-bin stapling mailbox
Motor control
Failure detection
Delivery operation
Stacker mode
Mailbox/job separator mode
Jam Detection
Automatic Delivery
Removal and replacement
Introduction
Removal and replacement strategy
Electrostatic discharge
Required tools
After performing service
Before performing service
Post-service test
Print-quality test
Parts removal order
Customer self repair (CSR) components
Control panel
Print cartridges
Toner-collection unit
Formatter PCA
Fax card
Hard drive
Tray
Fuser
Feed and separation rollers (Trays 2-5)
Pickup roller (Tray 1)
Reinstalling the pickup roller (Tray 1)
Secondary transfer roller
Intermediate transfer belt (ITB)
Standard output bin
ASY-TRY-F-BASE-SP (document feeder tray extender)
Output bin bezel
ASY-CVR-FE-PICK-SP (pickup roller cover)
ASY-ROL-FE-FEED-SP (pickup roller)
ASY-HLD-REV-PAD-SP (pickup roller pad) and ASY-SP-REV-SPR (spring)
External panels, covers, and doors
Identification and location
S-CVR-REAR (scanner rear cover)
ASY-CVR-F-SP (document feeder front cover)
ASY-CVR-F-R-SP (document feeder rear cover)
S-CVR-LEFT (scanner left cover)
Fan cover
Lower-left cover
Left cover
Right-front cover
Front-door assembly
Right-rear cover
Rear cover
Right-door assembly
Document feeder
ASY-LVR-FE-EMP-SP (paper present flag)
Document feeder
ASY-CVR-FE-FEED-SP (document feeder jam-access cover)
ASY-TRY-SP (tray assembly)
ASY-FRM-RE-FEED-SP (internal assembly)
ASY-PBA-RELAY-SB (document feeder PCA)
ASM-IF-SP (document feeder cable)
ASY-HNG-L-SP (document feeder left hinge)
ASY-HNG-R-SP (document feeder right hinge)
ASY-FAN-SP (document feeder fan)
ASY-MOT-FE-SP (motor)
ASY-MOT-RE-SP (document feeder motor)
ASY-DFSENS-SP (document feeder open sensor)
ASY-GIDREV-SPR-SP (document feeder jam access plate)
ASY-BASE_SB (base assembly)
Scanner
Scanner filter cover and scanner filter
Scanner assembly
Scissor hinge assemblies
S-ASSY-CP-ADAPTER (CP adapter assembly)
S-PBA-SCB (SCB)
S-ASM-USB (USB control panel cable)
S-HNG-LIFT-R (scanner release assembly)
S-ASSY-UPPER-UNIT (tub top)
S-PBA-TYUKEI (interconnect board) and S-SNS-EY3A1061–2 (size sensor)
S-ASSY-INV (inverter)
S-FAN-MFB-30E-05A-006 (inverter fan)
ASSY-CRG-UNIT-IR4068 (optical assembly)
S-ASSY-MOTOR-UNIT (motor assembly)
S-FAN-D06037600G-001 (scanner fan)
Internal assemblies
IPTU
Cassette feed guide
Secondary transfer assembly
Separation pad (Tray 1)
Registration density (RD) sensor assembly
Registration assembly
Residual-toner-feed motor
Residual-toner duct and feed assembly
Cartridge fan and environmental sensor
Toner-collection sensor and scanner-thermistor assembly
Delivery fan
Intermediate cover and duplexing gear cover
Delivery assembly
Duplex-drive assembly
Power-supply fan
Image scanner power supply unit (PSU)
Interconnect board (ICB)
DC controller PCA only
Low-voltage power supply (LVPS)
DC controller PCA and tray
High-voltage power supply lower (HVPS-D)
Developing-disengagement motor
Exhaust fan and fan duct
Pickup motor
Lifter-drive assembly
Lifter base assembly
Tray-pickup drive assembly
Tray-pickup assembly
Laser/scanner assembly (Y/M)
Laser/scanner assembly (C/Bk)
High-voltage power supply upper (HVPS-T)
Yellow, magenta, cyan, and black drum motors
Fuser motor
ITB motor
Main-drive assembly
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)
Right cover (optional paper feeder)
Rear-right cover (optional paper feeder)
Pickup assembly (optional paper feeder)
Lifter assembly (optional paper feeder)
Lifter-drive assembly (optional paper feeder)
Pickup motor assembly (optional paper feeder)
Controller PCA (optional paper feeder)
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)
Right cover (500-sheet paper feeder)
Front cover (500-sheet paper feeder)
Pickup assembly (500-sheet paper feeder)
Lifter assembly (500-sheet paper feeder)
Lifter-drive assembly (500-sheet paper feeder)
Pickup motor assembly (500-sheet paper feeder)
Controller PCA (500-sheet paper feeder)
Stapling mailbox
Stapling mailbox front cover
Stapling mailbox rear cover
Holder connector
Stapling mailbox door
Top cover
Output bin 3
Stapling mailbox PCA
Stapler assembly
Stamp solenoid
Output bin sensor PCA
Stacking panel
Jogger assembly
Flapper guide assembly
Flapper assembly
MBM output bin assembly
Output bin 3 drive assembly
Output bin solenoid
Solve problems
Solve problems checklist
Administration Menu Map
Troubleshooting process
Determine the problem source
Power subsystem
Control-panel checks
Scanning subsystem
Tools for troubleshooting
Component diagnostics
Diagrams
Internal print-quality test pages
Print-quality troubleshooting tools
Control panel menus
Interpret control-panel messages
Event log messages
Clear jams
Prevent jams
Jam locations
Clear jams in the document feeder
Clear paper jams in the stapler/stacker assembly
Clear staple jams
Clear jams from under the scanner assembly
Clear jams in the output bin area
Clear jams in the right door
Clear jams in Tray 1
Clear jams in Trays 2, 3, 4, or 5
Clear jams in the lower-right door (Trays 3, 4, or 5)
Jam causes and solutions
Change jam recovery
Paper does not feed automatically
Product feeds multiple sheets
Use manual print modes
Solve image-quality problems
Print quality examples
Clean the product
Clean the paper path
Clean the scanner glass
Clean the fuser
Solve performance problems
Solve connectivity problems
Solve direct-connect problems
Solve network problems
Service mode functions
Service menu
Product resets
Preboot menu options
Solve fax problems
Is your fax set up correctly?
Check fax accessory status
Fax feature is not operating
General fax problems
Problems with receiving faxes
Problems with sending faxes
Error codes
Fax error messages
Fax reports
Firmware upgrades
Service settings
Product updates
Determine the installed revision of firmware
Perform a firmware upgrade
Parts and diagrams
Order parts, accessories, and supplies
Part numbers
Accessories
Supplies and maintenance kits
Cables and interfaces
Customer self repair (CSR) parts
Service kits
Unique components
Screws
How to use the parts lists and diagrams
External covers, panels, and doors
Right door assembly
Front door assembly
Internal components
Internal components (1 of 7)
Internal components (2 of 7)
Internal components (3 of 7)
Internal components (4 of 7)
Internal components (5 of 7)
Internal components (6 of 7)
Internal components (7 of 7)
Cassettes 2-5
Paper pickup assembly
Tray 1 paper pickup assembly
Registration assembly
Secondary transfer assembly
Intermediate paper transfer unit (IPTU)
Delivery assembly
Fuser assembly
PCAs
Stapling mailbox
External covers, panels, and doors (SSMBM)
Top door assembly (SSMBM)
Main body (SSMBM; 1 of 2)
Main body (SSMBM; 2 of 2)
PCAs (SSMBM)
500-sheet paper feeder
External covers, panels, and doors (1x500-SPF)
Main body (1x500-SPF)
1x500 and 3x500 paper feeders
Paper feeders
External covers, panels, and doors (1x500PF and 3x500PF)
Main body (1x500PF)
Main body (3x500PF)
Document feeder/scanner
Document feeder/scanner assemblies
Scanner inverter assembly
Scanner assembly (1 of 6)
Scanner assembly (2 of 6)
Scanner assembly (3 of 6)
Scanner assembly (4 of 6)
Scanner assembly (5 of 6)
Scanner assembly (6 of 6)
Document feeder assembly (1 of 5)
Document feeder assembly (2 of 5)
Document feeder assembly (3 of 5)
Document feeder assembly (4 of 5)
Document feeder assembly (5 of 5)
Alphabetical parts list
Numerical parts list
Service and support
Hewlett-Packard limited warranty statement
HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement
Color LaserJet Fuser Kit, Transfer Kit, and Roller Kit Limited Warranty Statement
Data stored on the print cartridge
End User License Agreement
OpenSSL
Customer self-repair warranty service
Customer support
Product specifications
Acoustic specifications
Electrical specifications
Physical specifications
Environmental specifications
Skew specifications
Regulatory information
FCC regulations
Environmental product stewardship program
HP LaserJet print supplies
Ozone production
Paper use
Plastics
Power consumption
Protecting the environment
Return and recycling instructions
Material restrictions
Paper
Chemical substances
Disposal of waste equipment by users in private households in the European Union
For more information
Material Safety Data Sheet (MSDS)
Declaration of Conformity
Declaration of Conformity (fax models)
Certificate of volatility
Types of memory
Safety statements
Canadian DOC regulations
Laser safety
Power cord instructions
Power cord statement (Japan)
VCCI statement (Japan)
EMC statement (China)
EMC statement (Korea)
EMI statement (Taiwan)
Laser statement for Finland
GS statement (Germany)
Restriction on Hazardous Substances statement (Turkey)
Substances Table (China)
Additional statements for telecom (fax) products
Additional FCC statement for telecom products (US)
EU Statement for Telecom Operation
New Zealand Telecom Statements
Industry Canada CS-03 requirements
Telephone Consumer Protection Act (US)
Japan Telecom Mark
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