2003 HP Color LaserJet 3500 / 3700 Series Service Manual
Hewlett Packard Models Covered & Key Technical Specifications
Models: HP Color LaserJet 3500, HP Color LaserJet 3500n, HP Color LaserJet 3700, HP Color LaserJet 3700n, HP Color LaserJet 3700dn, HP Color LaserJet 3700dtn
Sub-models / Variants: Q1319A, Q1320A, Q1321A, Q1322A, Q1323A, Q1324A
Trade Names: HP Color LaserJet
Model Years: 2003
Technical Data:
- Print Speed (3500 series): 12 ppm (monochrome and color)
- Print Speed (3700 series): 16 ppm (monochrome and color)
- Processor (3700 series): MIPS RISC 350 MHz
- Memory (3500 series): 64 MB SDRAM
- Memory (3700 series): 64 MB SDRAM (expandable up to 448 MB)
- Duty Cycle (3500 series): 45,000 pages per month
- Duty Cycle (3700 series): 55,000 pages per month
- Operating Voltages: 100–127 V (+/-10%) or 220–240 V (+/-10%) at 50–60 Hz (+/- 2 Hz)
- Circuit Capacity: 5.3 A (110 V models) or 3 A (220 V models)
- Media Weight Range: 60 g/m2 to 163 g/m2 (16 to 43 lb bond)
Hewlett Packard Manual Features & Content Preview
Technical Scope of the 2003 HP Color LaserJet 3500 and 3700 Service Manual
This official OEM service manual provides comprehensive technical documentation for the HP Color LaserJet 3500 and 3700 series printers, including all specific configuration variants (3500n, 3700n, 3700dn, and 3700dtn). Published in 2003, it remains the definitive technical reference for the 3500/3700 engine architecture.
- Covers the complete HP Color LaserJet 3500 and 3700 series hardware and internal assemblies.
- Spans over 550 indexed pages with internal cross-references for rapid troubleshooting.
- Includes high-resolution exploded-view part assembly illustrations, precise wiring schematics, and sensor location charts.
- Fully searchable PDF structure ensures you can locate error codes and component specifications instantly.
- Available as an instant download immediately after purchase.
Printer System, Configuration, and Workshop Data
Built for workshop efficiency, this manual gives you a direct look at the engine control system, image formation, and laser/scanner units. It documents exact timing and signal flows for the video interface, scanner motor control, and the high-voltage power supply. If you need to set up optional hardware like Tray 3, Jetdirect networking, or install 168-pin DIMM memory upgrades, the configuration and site requirement sections outline the exact OEM standards.
Troubleshooting is straightforward. The guide details error message diagnostics, status codes, and replacement procedures for field-replaceable units such as the fuser assembly and transfer unit. Because this manual is provided as an instant download, you can pull up internal circuit diagrams, sensor pinout tables, and solenoid/clutch function charts on your tablet or laptop right at the workbench.
Technical specifications are highly detailed. The 3500 series is built for a 45,000-page monthly duty cycle, while the 3700 series handles up to 55,000 pages. Memory on the 3700 can be expanded to 448 MB. Inside the high-voltage control section, you will find exact data on the secondary transfer current feedback signal (TR2S). Fuser heater surface temperature control relies on two thermistors, utilizing the sub-thermistor TH2 for critical start-up monitoring. The documentation also covers the Fuser Heater Drive signal (FSRD) and its direct interaction with the DC controller CPU. Printer weights are confirmed at 36.6 kg for the 3500 and 37.8 kg for the 3700 series.
Safety Note: High-voltage components are present within these units. Always ensure you follow standard workshop safety protocols and verify your technical qualifications before opening the printer chassis or servicing internal assemblies.
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