HP LaserJet 4345mfp / 4345x mfp / 4345xs mfp / 4345xm mfp Service Manual (P/N Q3942-90950)

650 Pages • 22.39 MB • Printable PDFs (ZIP Download)

4.3starstarstarstarstar_border(3)
visibility Preview Available
$5.49 Original OEM Factory Manuals & Data Instant Download / No Shipping Fees
OR BUY NOW
verified_user
Lifetime Access
Re-download anytime
flash_on
Instant Download
Get it immediately
lock
Secure Payment
PayPal

Hewlett Packard Models Covered & Key Technical Specifications

Models: HP LaserJet 4345mfp (Q3942A), HP LaserJet 4345x mfp (Q3943A), HP LaserJet 4345xs mfp (Q3944A), HP LaserJet 4345xm mfp (Q3945A)
Sub-models / Variants: Base model, 4345x mfp, 4345xs mfp, 4345xm mfp
Model Years: 2004
Serial Numbers: Q3942A, Q3943A, Q3944A, Q3945A
Technical Data:

  • Print speed: 45 ppm (Letter), 43 ppm (A4)
  • Microprocessor: 533 MHz
  • Resolution: 600 dpi (with REt), 1200 dpi (FastRes 1200)
  • Standard Memory: 256 MB (expandable to 512 MB)
  • Print Cartridge Yield: 18,000 pages at 5% coverage
  • Power Consumption (Ready): 44 W to 49 W depending on configuration
  • Power Consumption (Sleep): 15 W
  • Power Consumption (Off): 0.25 W
Technical Specifications
keyboard_arrow_down
Document Number / Seller:
25541 / Donna Cooper
File Size:
22.39 MB
File Type:
ZIP
Language:
English
Pages:
650
Printable:
Yes
Category:
Printer
Last updated / verified
Jun 11, 2026

Hewlett Packard Manual Features & Content Preview

The official 650-page HP service manual covers the 2004 HP LaserJet 4345mfp series, providing component-level service information for the base model, 4345x, 4345xs, and 4345xm variants. Built specifically to support daily workshop operations, it details the operation of the formatter system, DC controller, and laser-scanner unit. You get a complete breakdown of the pickup, feed, and delivery paths.

Sections include comprehensive indexes for internal assemblies like the fuser, main motor, paper-feed assembly, and scanner-optical unit. When servicing these machines, standard high-voltage and thermal safety protocols must be observed to prevent injury, especially around the heating components. It serves as the foundational technical reference for the entire launch build, streamlining your repair preparation and troubleshooting workflows.

Manual Specifications and Delivery

  • Documents system diagnostics, maintenance-kit replacement, and standard repair schedules.
  • Official HP publication P/N Q3942-90950, first edition November 2004.
  • Contains exploded-view diagrams, electrical circuit charts, and component-location maps.

Performance Data and Operating Tolerances

This reference material charts electrical specifications, power consumption, and media tolerances directly from the manufacturer.

  • Printing speed for Letter-size documents: 45 ppm
  • Fuser operating temperature: 200°C (392°F)
  • Power requirements for 110-volt models: 15.0 Amps
  • ADF capacity: 50 sheets
  • Standard output bin: 500 sheets
Technical Safety Notice
keyboard_arrow_down

This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Customer Reviews

Read what our customers say about this Hewlett Packard Printer manual and share your own experience.