HP LaserJet 4345mfp / 4345x mfp / 4345xs mfp / 4345xm mfp Service Manual
Comprehensive service and repair documentation for all HP LaserJet 4345 models, covering installation, maintenance, and troubleshooting. Includes detailed part diagrams. PN Q3942-90950
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Sample pages from the HP LaserJet 4345mfp / 4345x mfp / 4345xs mfp / 4345xm mfp Service Manual manual
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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
Build 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
Hewlett Packard Manual Features & Content Preview
Technical Scope and Features
- Built for workgroups, this service publication covers the HP LaserJet 4345mfp Series, encompassing the base model, 4345x mfp, 4345xs mfp, and 4345xm mfp configurations.
- Official HP publication P/N Q3942-90950, first edition November 2004.
- Documents system diagnostics, maintenance-kit replacement, and how factory workshop documentation is structured for these units.
- Contains 650 pages including exploded-view diagrams, electrical circuit charts, and component-location maps.
- Downloads to your account within seconds of checkout.
- Permanent availability in your purchase account — no re-buy required.
- OCR text layer lets you jump to a torque spec by keyword.
- Page spreads stay legible when printed at original size.
- This 2004 first edition serves as the foundational technical reference for the entire 4345mfp Series launch build, including all optional tray and accessory integration details.
Component and Assembly Overview
The documentation provides a technical summary of the HP LaserJet 4345mfp Series print engine, scanner assembly, and peripheral options. It details the operation of the formatter system, DC controller, and laser-scanner unit, alongside specifications for the pickup, feed, and delivery paths. Sections include comprehensive lists for removing and replacing internal assemblies, such as the fuser, main motor, paper-feed assembly, and scanner-optical unit.
Technical Preview and Specifications
This manual includes data on electrical specifications, power consumption, and media tolerances for the HP LaserJet 4345mfp. Printing speed for Letter-size documents is specified at 45 ppm. The fuser operating temperature is rated at 200°C (392°F). Power requirements for 110-volt models are documented at 15.0 Amps. The ADF capacity is listed at 50 sheets, while the standard output bin accommodates up to 500 sheets.
This official 650-page HP service manual covers the 2004 HP LaserJet 4345mfp series, providing comprehensive diagnostic, installation, and component-level service information for the full range of LaserJet 4345 multifunction printer variants.
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