Samsung CLP-610ND & CLP-660N/660ND Color Laser Printer Service Manual, 2007 (P/N 0660-C00SEE)

Samsung’s August 2007 service manual (Version 1.00, P/N 0660-C00SEE) covers the CLP-610ND, CLP-660N, and CLP-660ND color laser printers for small workgroups. The cover identifies the CLP-660N/SEE variant and lists the CLP-610ND and CLP-660ND as the base models.

PDF Search, Bookmarks, and Drawings

Search and drawing detail: The chapter text is searchable, and embedded bookmarks link to chapters and subsections. Text search skips some graphics, including the blank-display flowchart. Small pin and signal labels in the connection drawings are legible when zoomed in.

The single printable PDF contains 180 pages, including both original covers and three pages of contents.

Print-Engine Service and Fault Diagnosis

The selected service topics below are part of a manual that also includes altitude adjustment and a reduced-size ISO 19752 test pattern.

• Disassembly: Photo sequences cover the cover unit, HVPS, main board, SMPS, fuser-control board, LSU, CRUM interface, fuser drive, pickup roller, and feed-drive assembly.
• Paper jams and print defects: Troubleshooting charts cover Jam 0/1/2, duplex jams, paper wrapped around the fuser, incorrect print position, and recurring marks.
• Tech Mode and EDC Mode: Check sensor states, motors, fans, clutches, and solenoids. The service menus also cover counter resets, margin adjustments, event logs, and test-pattern printing.
• Error messages and fault isolation: Printer and engine error tables and flowcharts address blank displays, no-power faults, fuser errors, LSU motor and Hsync errors, and toner or CRUM faults.
• Calibration and firmware: Covers Auto Color Registration setup and reset, supplies-life monitoring, configuration and network reports, and normal and special-mode firmware updates.
• Wiring and parts: Includes model-specific main and engine controller block diagrams, power-flow and connection drawings, exploded views, and Samsung SEC-code parts lists.

Samsung specifies trained, qualified service engineers for internal service.

Paper Path and Assembly Service

The system overview follows the tandem color engine from the organic photoconductor (OPC), charge and developing rollers through the paper transfer belt (PTB), transfer roller, belt-type fuser, duplex path, and exit assembly. It also covers the cassette, multipurpose feeder, and optional second cassette feeder. The maintenance section documents toner-cartridge and PTB replacement.

Factory-aligned assemblies: Opening the laser scanner unit (LSU) can admit dust and degrade print quality. Disassembling the PTB can disturb its factory-set home sensor, and disturbing the main or developer drive alignment can cause noise, image misalignment, or uneven toner distribution. The manual also flags the OPC surface’s sensitivity to light and scratches and calls for Auto Color Registration after certain replacements.

Service precautions: The manual covers AC isolation, laser exposure, hot-fuser handling, and electrostatic discharge precautions for internal work.

Controller and Fuser Differences

The CLP-610 uses a CHORUS3 controller with DDR2 memory and a single-lamp, pulse-controlled fuser drive. The CLP-660 uses an RM7065C/SPGPXm controller with DDR1 memory and a dual-lamp, phase-controlled fuser drive. The difference table and exploded parts lists help match the main board, RAM module, and fuser drawer connector to the printer. They also distinguish the 110 V and 220 V power supplies, fuser drive boards, and fuser assemblies. The parts lists flag which items Samsung lists as available for service.

The CLP-610ND and CLP-660ND have built-in duplexing. The CLP-660N supports manual duplexing, with the CLP-U660A listed as an export-only duplex option. The CLP-610N appears in the duplex comparison, shared engine-controller diagram, and selected parts references.

Power Flow and Service Checks

The power-flow drawing traces the SMPS’s +5 V logic supply and +24 V mechanical supply. The main board generates the separate 3.3 V rail. The high-voltage power supply (HVPS) table gives output and load data for the charger, developer, toner supply, transfer, attraction, eraser, and fuser-bias circuits. Normal firmware updates can use USB or the network, including SyncThru Web Service (SWS) and SyncThru Web Admin Service (SWAS). The special download mode uses USB.

Sample Defect Spacing and Margin Settings

The recurring-defect chart links white or black spots or periodic bands spaced 26.7 mm apart to the charge roller. White or black spots repeating every 125.6 mm point to the fusing belt. Comparing the spacing on a test print with the chart helps narrow down the assembly to inspect.

In Tech Mode, the top and left image margins each have an adjustment range of −10 to +10 mm for correcting print position.