Service Manual HP LaserJet MFP M433a/M436n/M436dn/M436nda;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your HP.
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To see what contain, please read table of contents:
1. PRODUCT SPECS AND FEATURES
Product Overview
Specifications
General Specifications
Print specifications
Controller and software specification
Scan specification
Copy specification
Paper handling specification
Supplies
Maintenance parts
Optional accessories
System configuration
Feeding system
Feeding system overview
Main components and functions
Cassette
Pickup roller and friction pad
Registration roller
MPF(Multi-Purpose Feeder) unit
Image Creation
Printing process overview
Imaging unit
Imaging unit overview
Drum drive
Developer unit
Fuser unit
Fuser unit overview
Fuser duplex exit drive
Fuser unit temperature control
Laser Scanning unit (LSU)
LSU overview
Laser scanning optical path
Laser synchronizing detectors
Drive system
Drive motors
Main drive unit (OPC_DEVE_REGI_MP_pickup)
Fuser duplex exit drive
Toner cartridge drive
Scanner System
Scanner system overview
Scanning system components
Document feeder
Document feeder overview
Electrical parts location
Document feeder drive system
Overview
Document feeder original drive assembly
Document feeder registration drive assembly
Document feeder feed drive assembly
Document feeder exit drive assembly
Original return drive
Hardware configuration
Overview
Circuit Board Locations
Formatter (Main) board
Formatter (Main) board
OPE board
SMPS (LVPS) board (HP LaserJet MFP M436n/M436dn Printer only)
SMPS (LVPS) board (HP LaserJet MFP M436nda Printer only)
HVPS board
BLU PBA (back light unit)
Document feeder board
Tray 3 accessory board
Sensor location
2. REMOVAL AND REPLACEMENT
For additional service and support
Removal and replacement strategy
Electrostatic discharge
Required tools
Types of screws
Service approach
Before performing service
Releasing Plastic Latches
After performing service
Post-service test
Print-quality test
Removal: Toner cartridge
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Toner cartridge
Removal: Transfer roller
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Transfer roller
Removal: Fuser unit
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Fuser unit
Removal: Imaging unit (drum unit and developer)
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Imaging unit (drum unit and developer)
Removal: Pickup roller and friction pad
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Pickup roller and friction pad
Removal: MP pickup roller and friction pad
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: MP pickup roller and friction pad
Removal: Document feeder pickup roller assembly
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder pickup roller assembly
Removal: Document feeder friction pad
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder friction pad
Removal: Rear cover
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Rear cover
Removal: Front cover
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Front cover
Removal: Left cover
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Left cover
Removal: Formatter board
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Formatter board
Removal: LVPS board
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: LVPS board
Removal: Front cover open sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Front cover open sensor
Removal: Side unit
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Side unit
Removal: Side cover-open sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Side cover-open sensor
Removal: Platen cover (M433a/M436n/M436dn only)
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Platen cover (M433a/M436n/M436dn only)
Removal: Document feeder unit (optional)
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder unit (optional)
Removal: Document feeder cover
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder cover
Removal: Document feeder open cover
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder open cover
Removal: Document feeder stacker
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder stacker
Removal: Document feeder board
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder board
Removal: Document feeder registration-cover-detect sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder registration-cover-detect sensor
Removal: Document feeder motor solenoid clutch
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder motor solenoid clutch
Removal: Document feeder exit idle sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder exit idle sensor
Removal: Document feeder exit sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder exit sensor
Removal: Document feeder length-width sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Document feeder length-width sensor
Removal: OPE unit
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: OPE unit
Removal: Platen unit
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Platen unit
Removal: Upper platen
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Upper platen
Removal: CIS unit
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: CIS unit
Removal: Scan drive unit
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Scan drive unit
Removal: Scan home-position sensor and cover-open sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Scan home-position sensor and cover-open sensor
Removal: Laser/scanner unit (LSU)
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Laser/scanner unit (LSU)
Removal: Main drive motor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Main drive motor
Removal: Exit motor (MFP M436nda only)
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Exit motor (MFP M436nda only)
Removal: Fuser motor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Fuser motor
Removal: Paper empty registration MP sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Paper empty registration MP sensor
Removal: MP clutch
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: MP clutch
Removal: Registration clutch
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Registration clutch
Removal: Fuser fan
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Fuser fan
Removal: HVPS board
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: HVPS board
Removal: Temperature humidity sensor
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Temperature humidity sensor
Removal: Developer unit
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: Developer unit
Removal: SCF (optional Tray 3)
Introduction
Overview
Before performing service
Required tools
After performing service
Post service test
Remove: SCF board
Remove: SCF drive unit
Remove: SCF feed roller
3. TROUBLESHOOTING
Control panel
Understanding the status LED
Clearing jams
Introduction
Tray 2
In optional Tray 3
In Multi-purpose Tray 1
Inside the printer
In the exit area
In the duplex unit area
Clearing original document jams
Original paper jam in front of scanner
Original paper jam inside of scanner
Original paper jam in exit area of scanner
Original paper jam in scanner duplex path
Firmware upgrades
Determine the installed revision of firmware
Perform a firmware upgrade
HP Embedded Web Server
USB Firmware Upgrade
Tech Mode
Overview
Entering Tech mode
Tech mode menu
Tech Mode Menu description
Control Panel Error Messages
11-2T11, Paper mismatch Tray 2 Load [A4] [Plain] Continue ? Cancel X
11-2T21, Paper mismatch Tray 3 Load [A4] [Plain] Continue ? Cancel X
11-2T61, Paper mismatch Tray 1Load [A4] [Plain] Continue ? Cancel X
A1-1110, Error: #A1-1110 / Motor Failure: #A1-1110. Turn off then on. Call for service if the problem persists
A1-5513, Error: #A1-5513 / Motor Failure: #A1-1110. Turn off then on. Call for service if the problem persists
A2-1210, Error: #A2-1210 / Fan Failure: #A2-1210. Turn off then on. Call for service if the problem persists
A2-2110, Error: #A2-2110 / Fan Failure: #A2-2110. Turn off then on. Call for service if the problem persists
A3-3311, A3-3312, A3-3320, A3-3411, A3-3412 Sensor errors
C1-1110, C1-111A Toner errors
C1-1140, C1-1160, C1-1170 Toner errors
C1-1313, C1-1314 Errors
C1-1411 Toner Not Installed / Toner cartridge is not installed. Install it
C1-1512, Toner Not Compatible / Toner cartridge is not compatible. Check guide
C1-1711, C1-1712 Errors
C3-1110, Prepare IMG. Unit / Prepare new imaging unit
C3-1140, C3-1150, C3-1170 Imaging unit errors
C3-1312, C3-1411, C3-1414 Imaging unit errors
C3-1512, IMG. Not compatible / Imaging unit is not compatible. Check guide
C3-1711, C3-1712 Imaging unit errors
C9-2110, C9-2120, Prepare TR. Roller / Prepare with new transfer roller
C9-2220, Error: #C9-2220 / TR Failure: #C9-2220. Install TR roller again
H1-1210, Paper jam in tray 2
H1-1220 Tray 2 door is open. Close it
H1-1230, Error: #H1-1230 / Input System Failure: #H1-1230. Check tray 3 connection
H1-1252, H1-1254, Paper empty in tray 2 / Paper is empty in tray 3. Load paper
M1-1110, Paper jam in tray 1
M1-1610, Paper jam in tray 1
M1-5112, M1-5113, Paper empty in tray 1 / Paper is empty in tray 1. Load paper
M1-5120, All Trays Empty / Paper is empty in all trays. Load paper
M1-5610, Paper Normal in Tray 1
M1-5612, Paper empty in Tray 1. Load paper
M2-1110, M2-2210 Jam inside errors
M3-1110, Jam in exit area
S2-331D, Waiting for low temp / Waiting delay time for lower fixing temperature
S2-3321, Supplying Toner / Supplying and mixing toner to developer unit. Please wait
S2-3421, Calibrating density / Calibrating image density. Please wait
S2-4210, Front door is open. Close it
S2-4410, Right door is open. Close it
S3-3122, Scanner Locked / Scanner is locked. Press Stop button
S6-3123, IP Conflict / This IP address conflicts with that of other system
U1-2132, U1-2315, U1-2320, U1-2330, U1-2334, U1-2340, U1-234H Fuser unit failure errors
U2-1111, U2-1112, U2-1113, U2-1114 LSU failure errors
U3-3211, U3-3213, U3-3214, U3-3311, U3-3313, U3-3314 Original paper jam / Original paper jam inside of scanner. Remove jam
U3-3411, U3-3413, U3-3414 Original paper jam / Original paper jam inside of scanner. Remove jam
U3-3511, U3-3513, U3-3514 Original paper jam / Original paper jam inside of scanner. Remove jam
U3-3711, U3-3713, U3-3714 Original paper jam / Original paper jam inside of scanner. Remove jam
U3-4210 Scanner door open / Top door of scanner is open. Close the door
Printing quality problems
Adjusting the document feeder skew
Other errors
System diagram
Glossary
Index.
HP LaserJet MFP M433a M436n M436dn M436nda HP LJ MFP LJM433a LJM436n LJM436dn LJM436nda HP LaserJet MFP M433 M436