Brother MFC-9420CN All-In-One Laser Printer "tr belt" Questions

...it still says no TR roller installed. This web site below have the guide to replace the belt and how to reset them ...

...TR Belt Life: Replace Transfer Belt The transfer belt is exhausted. Install a new transfer belt. TR Kit Life: Replace PQ Kit The transfer roller and transfer belt cleaning roller are exhausted. ...

...Belt can be seen. Is silver seal dirty? Replace Photoconductor Unit. Go to Step [4]. 4 Check of SENSOR TR-0 (TR0 Sensor) attachment Remove Photoconductor Unit. Is SENSOR TR-0 attached securely? Go to ...

...Belt can be seen.Is silver seal dirty? Remove Photoconductor Unit. Is SENSOR TR-0 attached securely? Remove Photoconductor Unit. Are there any dirt or foreign bodies on the SENSOR TR-0 surface? Does ...

...TR-0 3 HARNESS-ASSY XERO 4 MOTOR ASSY P/R 5 HARNESS ASSY MAIN 6 PWBA MCU 7 LV/HVPS I had this problem 2 days ago and solved it by taking photoconductor unit out and with a flashlight I tried to ...

TR-0 When I inspected the original part the pcb was cracked therefore the sensor was unable to dectect the 'mirror' which is a silver square located on belt on photo con unit. If you require a copy of