Samsung SCX-6555N Service Manual (P/N SCX-6555N/SEE)

• 766-page Samsung Electronics PDF document set for the SCX-6555N/SEE: a 386-page SCX-6555N service manual, a 58-page SCX-FIN20S / SCX-MBT40S accessory service manual, and a 322-page SCX-6555N series technical training manual. The core manual is Version 1.00, dated September 2008, with Samsung document code 6555-N00SEE.
• Disassembly and repair coverage addresses the DADF, OPE/scanner, main PBA and power boards, fuser, LSU, transfer and ID-sensor assemblies, paper-feed and duplex paths, and main/exit drives.
• Optional paper and output equipment documents SCF/HCF, finisher, and mailbox controllers, motors, clutches, sensors, paper paths, jam removal, stapler service, and parts identification.
• Tech Mode procedures cover fault history, HFSI/NVM functions, engine/DADF/fax/network tests, sensor and actuator routines, registration and magnification, ID-sensor calibration, firmware upgrade, and reports.
• Named technical drawings include the Rushmore Main Block Diagram, RUSHMORE MAIN V0.1 CONNECTION Diagram, RUSHMORE DADF connection drawing, DADF Block Diagram, OPE Board Block Diagram, FAX Board Block Diagram, and exploded assembly catalogs.
• Additional training and field material covers SmarThru Office, Smart Panel, TWAIN/WIA, Network Scan, SetIP, Direct Printing Utility, CRU/image-quality diagnosis, service bulletins, and restoration/driver-cleanup utilities.

Manual Set and Coverage

The core publication is for the SCX-6555N basic model and SCX-6555N/SEE configuration. It maps the 53 ppm A4 / 55 ppm Letter monochrome engine across print, copy, scan, and optional fax operation, including Scan to Email, SMB/FTP/HTTP(S) network scanning, SmarThru Workflow, Gigabit Ethernet, USB, and HDD. Its option table identifies the SCX-FIN11S finisher, SCX-S6555A SCF, SCX-HCF100 HCF, and SCX-FAX210 serial / SCX-FAX211 parallel fax kits.

The appended accessory manual separately covers the SCX-FIN20S finisher and SCX-MBT40S mailbox used with the SCX-6555N. Its shared-model cover also lists SCX-6345N/6545N and CLX-8380ND/8385ND/8540ND, distinguishing accessory coverage from the machine-specific chapters.

System Architecture and Hardware Documentation

The hardware chapters follow the machine from the 500 MHz Orion2 main controller through the Hyper3 video/engine controller, CIP5 image processor, system and local buses, PCI architecture, memory, SATA HDD, USB, network, scanner, operation panel, and optional fax-board interfaces. Separate DADF, OPE, fax, SCF/HCF, finisher, SMPS, FDB, and HVPS sections map the related boards, harnesses, motors, clutches, solenoids, and sensors.

Repair sections identify screw types, cable routing, and color-coded registration, MP, and pickup clutch/harness pairings before covering removal and reassembly of major field-replaceable assemblies. The core parts catalog contains 28 machine groups, from frames, drives, fuser, pickup, duplex, scanner, OPE, and DADF assemblies through cassette, fax, finisher, and HCF hardware. The accessory catalog breaks the finisher and mailbox into feed, compile, ejector, stacker, top-tray, shield, actuator, and base assemblies.

Specification, Diagnostics, and Calibration Data

The diagnostic chapter is organized around Information, Fault History, and Test Routines. It provides machine and software identification, usage and HFSI counters, fault-group history, copier and fax NVM functions, and direct checks for motors, fans, clutches, solenoids, paper sensors, tray elevation, DADF operation, LSU status, developer controls, fuser operation, and finisher mechanisms.

Calibration coverage includes simplex/duplex registration, tray and bypass pickup timing, vertical and horizontal magnification, DADF speed, laser and high-voltage controls, and ID-sensor calibration. Reference tables cover SMPS output and protection data, HVPS specifications, dual-lamp fuser data, HCF feed timing, duplex skew tolerances, and component life information. Troubleshooting addresses paper-feed and DADF jams, repetitive image defects, copy/scan/network/fax faults, and LSU and fuser errors. Firmware updating, test patterns, shading and scan-edge checks, memory initialization, HDD formatting, password reset, and report output support repair verification.

Technical Training and Field Bulletins

The training manual connects hardware, firmware, and host-software diagnosis. It covers SmarThru Office and Smart Panel architecture, TWAIN and WIA operation, Network Scan, SetIP, and Direct Printing Utility. Hardware training adds main-controller and DADF material, Drum Cartridge Layout and Toner Cartridge Layout pages, and image-quality flowcharts for lines, light or dark output, background contamination, and toner-supply faults.

Supplemental bulletins document developer-related toner scattering, System Error #02-003 on units manufactured before November 2008 from fuser-lever/duplex-bracket interference, legal-size stacker detection, finisher paddle wear, and USB Direct Print/Scan to USB lockout on firmware 2.01.01.14. The matching restoration utility and a Vista 64-bit driver-cleanup tool are included. These extras are not part of the 766-page manual count.

Workshop Notes and Safety

Light exposure or surface contact can permanently damage the OPC drum and cause print-quality defects. During board and harness repair, disturbed cables must return to their original routing near moving parts, and the plastic retaining latches must be released carefully because they break easily.

Disconnect power before service. Review its precautions for laser radiation, high voltage, fuser heat, ESD, capacitors/batteries, and moving parts before opening the printer or optional finishing hardware.