LaserJet 3300 MF Printer
Service Manual

LaserJet 3300 MF Printer <br>Service Manual
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LaserJet 3300 MF printer Service Manual

This manual contains the necessary information to service the HP LaserJet 3300 MFP


1 Product information
Chapter contents
Overview of product
Front and side view
Back and side view
Hardware description
Firmware description
Product Specifications
Model and serial numbers
Warranty statement
Extended warranty
Print cartridge information
Refilled print cartridges
Recycling print cartridges
FCC Part 68 Requirements (US)
Telephone Consumer Protection Act (US)
IC CS-03 requirements
Regulatory information for EU countries

2 Operation
Chapter contents
Operating environment
Identifying the control panel components
Fax controls
To send a fax to one recipient
To receive faxes when you hear fax tones
Alphanumeric buttons
Menu and cancel controls
Copy, scan, and start controls
Control panel menu structure
To print the control panel menu structure
To use the control panel keys
Control panel error messages
Product media specifications
Supported media sizes (printer)
Guidelines for using media
Paper and Transparencies
Common media problems table
Card stock and heavy media
Loading media
Loading media to print
Selecting originals for the ADF
Media information for the flatbed
Loading originals to copy or scan
To load originals onto the flatbed scanner
To load originals into the ADF input tray
Printer output paths

3 Maintenance
Chapter contents
Life expectancies of parts that wear
Scanner calibration
Cleaning the product
Cleaning the exterior
Cleaning the glass
Cleaning the lid backing
Cleaning the print path
Cleaning the print cartridge area
Cleaning the printer pickup roller
Cleaning the printer separation pad
User-replaceable parts
Replacing the printer pickup roller
Replacing the printer separation pad
Installing a new ADF
To install a new or replacement ADF
Changing an ADF pick roller assembly
Removing and replacing the control panel bezel

4 Operational overview
Chapter contents
Basic functions
Formatter system
Central processing unit
Line Interface Unit (LIU)
Scanner formatter PCA
Flash memory or ROM
Standard Boot Process
Parallel interface or Universal Serial Bus interface
Control panel
Draft mode
Enhanced I/O
EN Contents 5
PJL overview
Scanner and ADF functions and operation
Scanner Functions
Scanner Operation
ADF Operation
ADF paper path and ADF sensors
ADF Jam Detection
Printer functions and operation
Engine control unit/power system
Image formation system
Printer paper-feed system
Jam detection
Basic sequence of operation (formatter-to-printer)
LIU (fax) functions and operation
PSTN operation
The fax subsystem
Formatter in the fax subsystem
LIU in the fax subsystem
Fax page storage in flash memory

5 Removal and replacement
Chapter contents
Removal and replacement strategy
Required tools
Before performing service
Print cartridge
Parts removal order
Separation of scanner from printer
Right side cover
Scanner side covers
Scanner assemblies
Flat lid or ADF assembly
The ADF pick roller assembly
ADF document feed guide
ADF separation pad
Control panel bezel
Control panel
Control panel chassis
Scanner formatter
ADF scanner glass
Printer covers
Left side door
Back cover
Printer top cover
Front cover assembly
Printer assemblies
6 Contents EN
Transfer roller
Line Interface Unit (LIU)
Fuser assembly
Output rollers
Fan assembly
Pickup assembly
Paper lift-plate assembly and pickup roller shaft
Right plate assembly
Left plate assembly
Bottom assemblies
Left bottom frame support
ECU fuses and ECU pan
Paper-feed assembly

6 Troubleshooting
Chapter contents
Basic troubleshooting
Control panel messages
Critical error messages
Checking the print cartridge
Solving image-quality problems
Solving paper-feed problems
Solving print paper-feed problems
Solving scanner (copier) paper-feed problems
Functional checks
Engine test
Half self-test functional check
Drum rotation functional check
Heating element check
High-voltage power supply check
Paper path check
Updating or recovering the firmware code
Firmware update via flash executable
Firmware recovery DIMM
Troubleshooting tools
Internal reports
Printing all fax reports at once
T.30 protocol trace
Service mode functions
Secondary service menu
Developer’s menu
NVRAM init
PJL software commands
Repetitive image defect ruler
Main wiring
Locations of connectors
Locations of connectors and switches

7 Parts and diagrams
Chapter contents
Ordering parts and supplies
Related documentation and software
Parts that wear
Common hardware
How to use the parts lists and diagrams
Scanner assemblies
Scanner and ADF
ADF rollers and separation pad
Control panel assembly
Printer assemblies
Printer covers
Paper tray
Internal assemblies
Internal components (1 of 2)
Internal components (2 of 2)
Electrical components
Paper pickup assembly (1 of 2)
Paper pickup assembly (2 of 2)
Fuser assembly
Alphabetical parts list
Numerical parts list

FORMAT: High resolution PDF document!
ZIP archive: 7 948 kB

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We are in business since 2002 and do our best to give our customers perfect service!

  Morris Gven 2015-02-27 14:36:17  
  Thanks for your advice. I had the printer Epson Pro 4900 attached to the network. Once I used the USB connection everything worked great. There were 2 ink channels that I could not clean. After poking around the internet I found discussion of air in the lines. Did an initial charge and now things are working perfectly. Thanks for a great product and tech support. Regards, Morris Gven
  jon barrios 2022-02-17 17:16:38  
  The best $10 I ever spent! Thank you it worked perfect.
  Dominique Aigroz 2019-08-12 17:55:31  
  I'm happy, you saved my day. I was completely blocked. Thank you!
  gökhan gökbulut 2015-12-07 12:05:42  
  Grazie per la tempestività e la cortesia .Stampante resettata e perfettamente funzionante grazie mille .Cordiali saluti Alex
  Rick Benavides 2011-06-07 22:14:16  
  Thanks John, You saved me alot of time and frustration dealing with that idiot I was talking with at Ebson, he didn't know sh$t about my printer, he began by telling me that my printer was like a human body and I was like WTF???, well anyway I eventually told him he was stupid and hung up on him, I called the place where I purchased my printer from and he gave me your website, everything is working fine now and you saved me from any down time I would have had taking to the service center!...thank you again!
  Warren Ryland 2013-07-21 10:09:23  
  The reset utility works great for my Artisan 700. Thank you SO SO SO much for making this available for Mac. You can\'t imagine how much hassle you\'ve saved me - trying to get a Windows machine to run a reset utility on... Excellent service altogether. Many thanks from Ireland!
  Jaqueline Rangel 2016-12-13 05:39:42  
  I don't get any reply to my email. Is there a customer service person at the business? My question is: I see that you have the "HP OfficeJet G85 Service Manual and Parts List". How many pages does the manual have? Please answer my question by email, Thanks in advance. kumar 2021-01-06 20:18:19  
  Tried other sites, but they did not work. This one worked like a charm, wish I had found this one first.
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Service Manual