Kyocera TASKalfa 250ci/300ci/400ci/500ci 2008 Service Manual (P/N 302FZ17100)

Published in November 2008, this Kyocera factory service publication covers the TASKalfa 250ci, 300ci, 400ci, and 500ci, with headers for the 2JZ, 2JX, 2JV, and 2H7 chassis and separate 25/25, 30/30, 40/40, and 50/40 ppm data. The cover shows identifiers 842H7111 and 2H7SM061, Rev. 1. Written for service personnel, it assumes commercial-copier experience, maintenance-mode and electrical-testing skills, and safe work around high-voltage and heated assemblies. The 586-page PDF contains a 441-page service manual plus twelve accessory installation guides.

Repair, Diagnostics, and Setup Coverage

• Fault isolation: Diagnoses paper misfeeds by sensor and timing logic, with self-diagnostic C-code tables covering probable causes, connector and PWB checks, and corrective measures. Separate charts address image-formation, electrical, and mechanical faults.

• Major repair work: Documents removal and refitting of the feed and separation pulleys, MP unit, exposure lamp, scanner wires, ISU, laser scanner unit, developing and drum units, charger rollers, transfer belt and roller, fuser, hard-disk unit, and paper-conveying assembly.

• Maintenance and calibration: Groups factory tests by drive/paper feed, optics, high voltage, developing, fuser, support equipment, image processing, network scanner, and counters. Procedures cover motor-speed adjustment, clutches, solenoids, fans, switches, sensors, print timing, scanner/DP geometry, drum refresh, halftone, uneven density, laser output, and color registration.

• Mechanical and electrical reference: Maps machine operation with section drawings, block diagrams, electrical-parts layouts, PWB connector pin/I/O/voltage tables, and 11 wiring-diagram sheets. Diagram Nos. 3 and 5 have separate 25/30 and 40/50 ppm versions.

• Firmware and PWB replacement: Explains USB firmware upgrades for the main, engine, MMI, scanner, and option systems, plus EEPROM transfer, DIMM placement, and cable matching when replacing the main or engine PWB.

• Machine setup and administration: Covers installation, initial copy modes, core system settings, address-book and one-touch editing, User Login Administration, and Job Accounting.

• Accessory installation: Adds the key-counter installation procedure and separate guides for the DP-750/DP-760 document processor, standard and 3,000-sheet paper feeders, both document finishers, center-folding unit, mailbox, hole punch, job separator, FAX System (Q) including Dual FAX, DT-710, and duct unit.

Variant-Specific Service Data

The tables distinguish 25/30 from 40/50 ppm hardware through speed-specific paper-feed diagrams, motor and transfer controls, fuser data, wiring sheets, and hard-disk layouts. Specifications identify 2 GB of installed memory, one 80 GB drive on 25/30 ppm machines, and two 80 GB drives on 40/50 ppm machines. Maintenance-parts tables separate MK-865A/MK-865B kits from MK-855A/MK-855B, including voltage-specific fuser assemblies. Periodic service tables cover the feed, optical, image-formation, transfer, fuser, duplex/eject, filter, and sensor sections.

Diagrams and Required Service Aids

Named illustrations include the machine cross section and paper path, speed-specific cassette paper-feed block diagrams, the drum, laser scanner, primary transfer, and fuser section block diagrams. Electrical chapters add PWB, switch/sensor, and motor layouts, board silk-screen drawings, and connector-level signal tables.

Scanner repair calls for frame securing tools P/N 302FZ17100, wire stoppers P/N 3596811, and ISU position pins P/N 18568120. Scanner/DP, gamma, and matrix calibration uses specified originals P/N 302FZ56990, 302AC68243, 303JX57010, and 303JX57020.

Page Breakdown

Repair Cautions and Scope

The manual flags several easy-to-miss damage risks. Turning off the main switch before shutdown with the panel Power key can damage the hard disk. During transfer-belt repair, the belt must clear its sensor, the left-eject actuator and light-shielding plate are damage-prone, and the fuser must be refitted without trapping the transfer-belt wire.

The accessory booklets are installation guides, not full repair manuals for those options. The main repair chapter focuses on module removal/refitting and post-replacement setup; PWB coverage provides signals and checks rather than component-level board repair.

Disconnect wall power before disassembly and follow the factory warnings for high-voltage sections, laser optics, ESD-sensitive PWBs, and the hot fuser. Powered checks belong only in qualified service hands under the specified procedure.