Sharp MX-M260/MX-M310 Factory Service Manual & Guide (P/N 00ZMXM310/S1E)

• Sharp OEM after-sales service publication, code 00ZMXM310/S1E, printed in August 2009 and supplied as a 137-page PDF for the MX-M260, MX-M310, MX-M260N, and MX-M310N digital multifunctional systems.
• Distinguishes the 26-cpm and 31-cpm engines, SPLC copier/printer models, and PCL network models, with configuration data for RSPF, paper-feed, finisher, job-separator, printer, scanner, fax, and memory options.
• Covers process and fusing repair for the OPC drum, main charger, cleaning blade, developer unit, toner-control parts, thermostats, thermistors, heater lamps, heat rollers, cleaning pads, and separation pawls.
• Maps paper-handling and RSPF repair through the bypass, upper and lower cassette feeds, pickup/feed rollers, separation sheets, lift systems, clutches, solenoids, sensors, duplex transport, and paper-exit assemblies.
• Provides factory simulation and calibration coverage for sensor and load testing, image-position and magnification correction, mirror-base distortion, developing and charging controls, RSPF geometry, exposure, counter management, and fault-history review.
• Includes firmware-update procedures, system and PCL block diagrams, sectional wiring charts, connector/pin data, PWB signal lists, and exploded service views for the main mechanical and electrical assemblies.

Model and Configuration Coverage

The compatibility tables identify the MX-RP10 RSPF, MX-DE10/MX-DE11 paper-feed units, MX-FN13 finisher, and MX-TR11 job separator, along with MX-PB12 printer, MX-NSX1 scanner, and AR-FX7 fax integration. The model-code simulation also lists MX-M260FG, MX-M260FP, MX-M310FG, and MX-M310FP regional codes, while the title page specifically names MX-M260, MX-M310, MX-M260N, and MX-M310N.

Optional equipment is covered where it interfaces with the main unit: configuration detection, sensors and loads, fault codes, wiring, settings, and firmware. This is a base-engine service manual, not a complete parts catalog or a separate overhaul manual for every accessory.

Diagnostic and Calibration Depth

The simulation section documents checks for the scanner and RSPF, finisher and option trays, paper-transport clutches and solenoids, lamps, fans, duplex and main drives, toner and polygon motors, touch panel, PCL-board memory/flash, and network connection. Counter functions display drum, developer, duplex, feeder, scan, fax, misfeed, and trouble history, with the corresponding resets used after maintenance or component replacement.

Calibration coverage includes developing doctor gap and MG roller main-pole position; developing and grid bias; lead-, rear-, and side-edge image position; paper off-center; scan and print magnification; mirror-base distortion; RSPF front/back positioning; white-correction pixel setup after lens service; automatic RSPF scan-position adjustment; and exposure/gamma control. Sharp test charts UKOG-0089CSZZ and UKOG-0162FCZZ are specified for image-geometry and density work.

The self-diagnostic chapter organizes each code by details, cause, and check/remedy. It covers IMC communication and memory faults, LSU/CCD/shading errors, finisher, printer, and FAX board problems, fusing thermistor and lamp faults, repeated exit jams, scanner and motor failures, fan and polygon-motor lock conditions, EEPROM/model-code issues, operation-panel communications, and developer-adjustment errors. That fault isolation supports circuit-, harness-, sensor-, and PWB-level repair decisions rather than a simple code list.

Mechanical Service Views and Electrical Reference

Separate preventive-maintenance grids for the 26-cpm and 31-cpm machines run through the 600K cycle. They distinguish check, clean, replace, and lubricate actions across process, developer, fuser, paper-feed, transport, drive, and ozone-filter sections. Developer and drum life are evaluated from counter and rotation data, not copy count alone.

Exploded views and numbered assembly drawings cover the process and developing units, complete fusing assembly, optical section, bypass and cassette feeds, duplex/side-door transport, paper exit, power supply, MCU/IMC/motherboard PWBs, drive unit, operation panel, and RSPF feed and transport. The repair scope includes removal, disassembly, inspection, reassembly, and related final adjustments.

Manual-specific cautions include protecting the OPC drum from fingerprints, oil, and prolonged light exposure, since contamination in the cleaning-blade track can flip the blade and prior exposure can leave density defects. The LSU is treated as a replaceable unit and must not be disassembled; separate reassembly notes call out the indexed RSPF motor position, manual-feed cam-transmit arm, and transfer-roller spring seating.

Named electrical references include the System Block Diagram, PCL PWB Block Diagram, MCU/Panel and Optical Base Plate Sensor chart, Manual Feed and 1st Tray chart, Fusing Unit and Power Supply chart, and DV and LSU chart. Board-to-board sheets map motherboard, MCU, IMC, PCL/SPLC, and FAX connections; the signal list adds function, logic state, connector, pin, and PWB location.

Firmware coverage identifies MCU, panel, IMC, and finisher PWB targets, with separate copier/FAX and printer-control-board download procedures plus troubleshooting for destination mismatch, invalid files, unavailable options, timeouts, communication errors, and checksum faults. Before repair, isolate power and connected printer, network, and telephone cables unless a specified live test requires operation; the manual also identifies hot fusing surfaces, high-voltage, moving-drive, laser/LSU, and ESD hazards.