Ricoh FT 6645-6750 Printer Service Repair Manual

Service Repair Manuals of Ricoh-FT-6645-6750 Printer is a handbook published by Ricoh manufacturer or a specialized publishing company that contains instructions and specifications for the maintenance, repair, and how to fix all error of a specific Ricoh-FT-6645-6750 Printer. It may include Exploded Views, Parts List, System Diagram, Disassembly and Reassembly, Alignment, Troubleshooting guides. …
Service Repair Manuals of Ricoh-FT-6645-6750 Printer is often used for the Service Center of Ricoh.
Compatible Models : Ricoh FT-6645,Ricoh FT-6750.

Ricoh-FT-6645-6750 Service Repair Manual
Ricoh-FT-6645-6750 Service Repair Manual
Ricoh-FT-6645-6750 Service Repair Manual contains instructions, specifications for the maintenance, repair ,Exploded Views, Parts List, System Diagram, Disassembly and Reassembly, Troubleshooting guides.

You can do with Ricoh-FT-6645-6750 Service Manual :

1.1 Ricoh-FT-6645-6750 Service Manual guide you from basic to advanced usage it.
1.2 Grasp how to operate Ricoh-FT-6645-6750 Printer.

Grasp how to operate Ricoh-FT-6645-6750 Printer

1.3 Fix most of the errors of the Ricoh-FT-6645-6750 Printer:
When the printer experiences an error, the control panel will indicate an error message with the indicator lights and the SMART PANEL Ricoh-FT-6645-6750 program window will display to show the printer’s status or errors. Find the light pattern below that matches the printer light pattern and follow the solutions to clear the error.

Demo : how to fix error messages cause by Ricoh-FT-6645-6750 :

How to fix error Ricoh-FT-6645-6750

Error code Ricoh-FT-6645-6750

Error messages in Service Repair Manual Ricoh-FT-6645-6750 :

The printer does not print.
Paper does not feed into the printer.
A print job is extremely slow.
Half the page is blank.
The paper keeps jamming, Paper Jam inside, Paper Jam Outside…
The printer prints, but the text is wrong, garbled, or incomplete.
Pages print, but are blank.
The print quality of photos is not good. Images are not clear.
Your printer has an odd smell during initial use.

Demo : How to fix Paper Jam Ricoh-FT-6645-6750 Printer

Error code in Service Repair Manual Ricoh-FT-6645-6750 :

SC101 – Exposure lamp malfunction – abnormal On/Off: SMART PANEL Ricoh-FT-6645-6750:Exposure lamp open.Triac shorted.Exposure lamp thermoswitch open.Optics control board defective.
SC103 – Power source frequency detection error: SMART PANEL Ricoh-FT-6645-6750:Abnormal power source.Electrical noise.AC drive board defective.Optics control board defective.
SC104 – Exposure lamp malfunction – abnormal off: SMART PANEL Ricoh-FT-6645-6750:Main relay defective.Communication error between the main control board and the optics control board because of a poor harness connection.Optics control board defective.
SC120 – Scanner home position sensor abnormal – stays off: SMART PANEL Ricoh-FT-6645-6750:Scanner home position sensor defective.Optics control board defective.
SC121 – Scanner home position sensor abnormal – stays on: SMART PANEL Ricoh-FT-6645-6750:Scanner home position sensor defective.Scanner motor defective.Scanner HP sensor short.
SC125 – Low scanner speed: SMART PANEL Ricoh-FT-6645-6750:Scanner drive motor defective.Optics Control Board defective.
SC126 – High scanner speed: SMART PANEL Ricoh-FT-6645-6750:Scanner drive motor defective.Optics control board defective.
SC127 – Scanner drive motor encoder failure: SMART PANEL Ricoh-FT-6645-6750:Scanner drive motor defective.Optics control board defective.
SC140 – Lens vertical home position sensor abnormal – stays off: SMART PANEL Ricoh-FT-6645-6750:Lens vertical home position sensor shorted.Lens vertical drive motor defective.Optics control board defective.
SC141 – Lens vertical home position sensor abnormal – stays on: SMART PANEL Ricoh-FT-6645-6750:Lens vertical home position sensor open.Lens vertical drive motor defective.Optics control board defective.
SC142 – Lens horizontal home position sensor abnormal – stays off: SMART PANEL Ricoh-FT-6645-6750:Lens horizontal home position sensor short.Lens horizontal drive motor defective.Optics control board defective.
SC143 – Lens horizontal home position sensor abnormal – stays on: SMART PANEL Ricoh-FT-6645-6750:Lens horizontal home position sensor open.Lens horizontal drive motor defective.Optics control board defective.
SC144 – 3rd scanner home position sensor abnormal – stays off: SMART PANEL Ricoh-FT-6645-6750:3rd scanner home position sensor shorted.3rd scanner drive motor defective.Optics control board defective.
SC145 – 3rd scanner home position sensor abnormal – stays off: SMART PANEL Ricoh-FT-6645-6750:3rd scanner home position sensor open.3rd scanner drive motor defective.Optics control board defective.
SC146 – Abnormal magnification operation: SMART PANEL Ricoh-FT-6645-6750:Lens vertical drive motor defective.Lens horizontal drive motor defective.3rd scanner drive motor defective.Optics control board defective.
SC190 – Optics thermistor open: SMART PANEL Ricoh-FT-6645-6750:Optics thermistor open.
SC191 – Scanner motor thermistor open: SMART PANEL Ricoh-FT-6645-6750:Scanner drive motor defective.
SC302 – Charge corona leakage: SMART PANEL Ricoh-FT-6645-6750:Main charge corona unit defective.Main charge power pack defective.High voltage control board defective.
SC303 – Charge corona wire cleaner failure: SMART PANEL Ricoh-FT-6645-6750:Charge corona wire cleaner drive motor defective.Insufficient lubrication for the charge corona wire cleaner drive mechanism (G501 grease).High voltage control board defective.
SC341 – Development motor locked: SMART PANEL Ricoh-FT-6645-6750:Extra load in the development unit.Development motor defective.Main control board defective.
SC342 – Toner collection motor locked: SMART PANEL Ricoh-FT-6645-6750:Toner collection sensor defective.Toner collection motor defective.Toner clog in the toner collection pipe.
SC343 – Toner collection bottle at improper position: SMART PANEL Ricoh-FT-6645-6750:Toner collection bottle set switch defective.Toner collection bottle is set incorrectly.
SC351 – Abnormal Vsg Detection (Vsg > 4.2V): SMART PANEL Ricoh-FT-6645-6750:ID sensor defective.Main control board defective.
SC352 – Incomplete TD sensor initial setting: SMART PANEL Ricoh-FT-6645-6750:Connector [A] not set correctly.Toner density sensor defective.Abnormal toner concentration.
SC353 – Abnormal Vsp Detection: SMART PANEL Ricoh-FT-6645-6750:ID sensor defective.OPC drum.High voltage control board defective.Poor contact of the development bias terminal.

1.4 Fluent Disassembly and Reassembly Ricoh-FT-6645-6750 Printer.
1.5 Diagnostic all errors are generated by Ricoh-FT-6645-6750 Printer.
1.6 How to refill toner Ricoh-FT-6645-6750.
1.7 How to update firmware fix Ricoh-FT-6645-6750.
1.8 How to fix all error cause by toner cartridge Ricoh-FT-6645-6750: toner cartridge not competition, install toner cartridge, toner exhausted, toner low, toner empty…
1.9 How to fix all fusser error, LSU error Ricoh-FT-6645-6750.
2.0 How to fix main board error, formater board error Ricoh-FT-6645-6750.
2.1 How to troubleshooting printer problem with low quality page Ricoh-FT-6645-6750.
2.2 How to fix error : door open close it Ricoh-FT-6645-6750.
2.3 How to fix : error status(red light status, red light blinking…) Ricoh-FT-6645-6750 (when printing).
2.4 How to fix error about imaging unit: empty image, imaging unit is not installed…Ricoh-FT-6645-6750.
2.5 How to fix paper jam inside, outside, output…Ricoh-FT-6645-6750.
2.6 How to login maintenance mode Ricoh-FT-6645-6750.
2.7 How to fix sensor failure, turn off then on…Ricoh-FT-6645-6750.

Ricoh-FT-6645-6750 Printer Service Manual covers following topics:

Ricoh-FT-6645-6750-Service-Repair-Manual

– Precautions Ricoh-FT-6645-6750.
– Product Specification Ricoh-FT-6645-6750.
– System Overview Ricoh-FT-6645-6750.
– S/W Structure and Descriptions Ricoh-FT-6645-6750.
– Disassembly and Reassembly Ricoh-FT-6645-6750.
– Alignment and Adjustments Ricoh-FT-6645-6750.
– Troubleshooting Ricoh-FT-6645-6750.
– Exploded Views & Parts List Ricoh-FT-6645-6750.

– Block diagram,schematic Ricoh-FT-6645-6750.

Block Diagram Ricoh-FT-6645-6750

Block Diagram Ricoh-FT-6645-6750

– Connection Diagram

connection-diagram-Ricoh-FT-6645-6750

connection-diagram-Ricoh-FT-6645-6750

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