1997-1998 HP Color LaserJet 4500/4550 Series Printer Service Manual (385 P.)
Technician-level documentation for 16 ppm monochrome, 4 ppm color output with procedures for drum drive assembly, carousel mechanism, and ITB replacement.
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Sample pages from the 1997-1998 HP Color LaserJet 4500/4550 Series Printer Service Manual (385 P.) manual
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Models Covered & Key Technical Specifications
HP Color LaserJet 4500/4550 Series — 1997-2000
Professional Technical Service Archive | LaserJet 4500/4550 Series Dossier.
- Design RPM Specs: Monochrome print capability is rated at 16 pages per minute throughout operation Margin.
- Advanced Weight Data: Maximum color reproduction establishes 4 pages per minute with enhanced output Protocol.
- Technical Resolution Data: Standard processor supports 233 megahertz RISC architecture for superior performance Architecture.
- Standard Twist Specifications: Base memory configuration provides 64 megabytes RAM for standard operations Norms.
- Principal Deviation Limits: Peak power consumption governs 470 watts during active printing mode Bounds.
- Key Throughput Data: Integrated paper capacity achieves up to 900 sheets across multiple trays Topology.
Professional Workshop Service Manual & Technical Specifications
Professional Performance Manual: Printer 1997-1998 HP Color LaserJet 4500/4550 Series Printer Service Manual (385 P.) Operations-Manual
Technical-Domain: HP Color LaserJet 4500/4550 Series // Procedure-Type: Professional Color Laser Printer Service / Electrophotographic Engine Maintenance Logic // Calibration-Scope: Complete technical documentation for authorized service personnel including mechanical systems, imaging assemblies, and diagnostic protocols.
| Integrated-Framework | Diagnostic-Logic | Framework |
|---|---|---|
| Image Formation Systems | Transfer belt operation and secondary transfer processes | Complete specifications provided |
| Paper Path Mechanisms | Feed roller assemblies and duplex unit operations | Documented in Chapter 5 |
| Electrical Subsystems | DC controller and formatter communication protocols | See Chapter 6 removal procedures |
| Consumable Components | Toner cartridges, imaging drum, transfer kit, fuser assembly | Replacement intervals documented |
Major sections focus on printer description specifications establishing configuration parameters, service approach methodologies outlining parts ordering procedures, installation requirements detailing network connectivity options, maintenance schedules addressing consumable replacement intervals, and theory of operation documenting image formation processes.
Professionally establishing comprehensive coverage of electrophotographic imaging systems, the manual documents laser/scanner assemblies operating at 600 dpi resolution with four-color CMYK toner deployment through carousel positioning mechanisms. The document includes laser safety classifications, environmental stewardship guidelines, and regulatory compliance statements for both 110-volt and 220-volt configurations supporting monochrome output at 16 pages per minute and color reproduction at 4 pages per minute.
Special procedures are addressed for intermediate transfer belt maintenance, including primary and secondary transfer operations coordinated through DC controller subsystems. The manual provides detailed removal and replacement sequences for formatter assemblies, high-voltage power supplies, and drum drive mechanisms accessible through systematic disassembly protocols. Paper path diagnostics are included for cassette feeding operations, multipurpose tray configurations, and optional 500-sheet feeder installations supporting media weights from 60 to 176 grams per square meter.
Verification procedures are included for troubleshooting error messages numbered 13.XX through 79.XXXX, with flowchart methodologies isolating failures to mechanical assemblies, electrical subsystems, or firmware operations. The document includes coverage of service mode access procedures, NVRAM initialization sequences, and diagnostic testing protocols for motors, solenoids, clutches, and photosensors throughout the paper transport assembly. Registration adjustment specifications and color calibration procedures are documented for maintaining print quality standards across the consumable life cycle.
The manual documents torque specifications for mechanical assemblies to ensure proper fastener retention throughout service procedures.
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