1999 Canon NP6512/6612/7120/7130/7130F Copier Service Manual (P/N FY8-13GB-000)

This Canon service manual covers the NP6512, NP6612, NP7120, NP7130, and NP7130F desktop copiers. Publication FY8-13GB-000, Revision 0, August 1999, documents their mechanical, electrical, and optical systems, with model-specific cassette and ADF configurations.

• Scanner and optics: Scanner/lens motor removal, drive-cable routing, mirror positioning, scanning-lamp replacement, and exposure adjustment procedures.

• Image formation: Drum-unit and transfer charging roller replacement, developing-cylinder removal and installation, and primary charging and density-control explanations.

• Paper transport: Cassette pickup, multifeeder, registration roller, and delivery assembly disassembly, with sensor-based jam diagnosis and mechanical checks.

• SURF fixing: Fixing assembly removal, lower roller and cleaning roller replacement, temperature-control circuits, and heater fault diagnosis.

• Automatic document feeder: Drive-unit and feed-belt service, pickup and registration roller removal, original-jam detection, and alignment adjustments.

• Electrical diagnosis: Fault-code tables, connector and sensor checks, circuit diagrams, service-mode settings, and calibration requirements after component replacement.

This manual is suited to copier service technicians comfortable with circuit diagrams, meter-based fault checks, and mechanical alignment.

Scanner and Image Formation Repair

Scanner service goes beyond motor replacement: it covers drive-cable routing, mirror positioning, and lens-cable installation. The adjustment procedures specify mirror positioning tool FY9-3009 and cable clip FY9-3017.

Image formation coverage explains primary charging roller bias, transfer bias, developing bias, and density correction. Drum-unit replacement includes calibration requirements; the handling notes explain how exposure to room light can damage the photosensitive drum's imaging performance, producing white spots or black bands.

Paper Feeding, ADF and Fixing Service

Jam diagnosis separates pickup, separation/feeding, and fixing/delivery faults. The checks connect symptoms to paper sensors, clutch solenoids, roller condition, and the cassette spring, helping technicians narrow a recurring jam to its source.

ADF procedures cover drive-unit and feed-belt removal, pickup and registration rollers, and original skew and stop-position adjustments. The feeder handles single-sided originals; its specifications exclude mixed original sizes.

SURF fixing coverage includes temperature-control logic, fixing lower roller replacement, and cleaning-roller removal. The fixing film and flat heater are not individually replaceable, and scratches on the film or lower roller can cause fixing faults.

Electrical Troubleshooting and Calibration

Troubleshooting tables cover E010 main-motor faults, E220 scanning-lamp faults, E064 high-voltage deviations, and fixing-temperature errors. Sensor checks, connector references, and DC controller input/output diagrams link the fault descriptions to the circuits involved.

After composite power supply PCB replacement, the manual specifies PW_OFST and IP_ADJ calibration. It also distinguishes lamp-intensity, AE, and drum-related adjustments required after other major component changes.

The appendix contains the general circuit diagram and separate DC controller, ADF controller, AE sensor, and composite power supply circuit diagrams. Timing charts relate control signals to scanner, paper-feed, and image-formation operations.

Internal circuitry includes high-voltage sections and capacitors that can retain charge after power-off; the manual's precautions for disconnecting power and handling the boards apply.

Cleaning and Maintenance Coverage

User cleaning covers the copyboard glass, ADF belt, and static eliminator; service cleaning notes address the optics and paper path. The maintenance chapter specifies no periodic parts-replacement schedule or scheduled servicing requirements.

Selected Alignment, Bias and Operating Specifications

Direct-mode test-copy adjustment specifies a leading-edge non-image width of 2.0 ±1.5 mm. The separate registration adjustment specifies an image leading-edge margin of 2.5 ±1.5 mm.

For the primary charging roller, the image-area DC bias reference is -1376 V, modified by APVC and density-mode corrections. The operating-temperature range is 7.5°C to 32.5°C; installation guidance also addresses humidity and condensation.

PDF Text Search and Circuit Diagram Viewing

Search, navigation and small labels: Body text and many circuit labels are searchable, with embedded bookmarks for chapters, major sections, and appendix diagrams. Some lettering in image-fault examples and graphical error-code displays is outside text search. Small schematic labels are readable when enlarged.

The single, printable English PDF has 426 pages, including 10 pages of front matter, a 42-page appendix section, and two closing pages. The total also includes 26 blank or header/footer-only pages.