Brother MFC 9420CN Printer Service Repair Manual

Service Repair Manuals of Brother-MFC-9420CN Printer is a handbook published by Brother manufacturer or a specialized publishing company that contains instructions and specifications for the maintenance, repair, and how to fix all error of a specific Brother-MFC-9420CN Printer. It may include Exploded Views, Parts List, System Diagram, Disassembly and Reassembly, Alignment, Troubleshooting guides. …
Service Repair Manuals of Brother-MFC-9420CN Printer is often used for the Service Center of Brother.
Compatible Models : Brother MFC-9420CN.

Brother-MFC-9420CN Service Repair Manual
Brother-MFC-9420CN Service Repair Manual
Brother-MFC-9420CN 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 Brother-MFC-9420CN Service Manual :

1.1 Brother-MFC-9420CN Service Manual guide you from basic to advanced usage it.
1.2 Grasp how to operate Brother-MFC-9420CN Printer.

Grasp how to operate Brother-MFC-9420CN Printer

1.3 Fix most of the errors of the Brother-MFC-9420CN Printer:
When the printer experiences an error, the control panel will indicate an error message with the indicator lights and the SMART PANEL Brother-MFC-9420CN 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 Brother-MFC-9420CN :

How to fix error Brother-MFC-9420CN

Error code Brother-MFC-9420CN

Error messages in Service Repair Manual Brother-MFC-9420CN :

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 Brother-MFC-9420CN Printer

Error code in Service Repair Manual Brother-MFC-9420CN :

Check Paper Size: SMART PANEL Brother-MFC-9420CN:Paper is not the correct size.
Check Tray #1: SMART PANEL Brother-MFC-9420CN:The indicated tray is not completely closed.
Check Tray #2: SMART PANEL Brother-MFC-9420CN:The indicated tray is not completely closed.
Comm.Error: SMART PANEL Brother-MFC-9420CN:Poor phone line quality caused a communication error.
Connection Fail: SMART PANEL Brother-MFC-9420CN:You tried to poll a fax machine that is not in polled waiting mode.
Cover Open: SMART PANEL Brother-MFC-9420CN:The rear cover is not completely closed.
Cover Open: SMART PANEL Brother-MFC-9420CN:The front cover is not completely closed.
Cover Open: SMART PANEL Brother-MFC-9420CN:The inside cover is not completely closed.
Data Remaining: SMART PANEL Brother-MFC-9420CN:Print data is left in the machine’s memory.
Disconnected: SMART PANEL Brother-MFC-9420CN:The other person or other person’s fax machine stopped the call.
Document Jam: SMART PANEL Brother-MFC-9420CN:The document was not inserted or fed properly, or the document scanned from the ADF was too long.
DR Mode in Use: SMART PANEL Brother-MFC-9420CN: The machine is set to distinctive ring mode. You can not change the receive mode from manual to another mode.
Near Waste Toner: SMART PANEL Brother-MFC-9420CN:The waste toner pack is nearly full.
No Fusing Unit: SMART PANEL Brother-MFC-9420CN:The fusing unit was not detected.
No OPC Belt: SMART PANEL Brother-MFC-9420CN:The OPC belt cartridge is not installed.
No Paper Fed #1: SMART PANEL Brother-MFC-9420CN:The machine is out of paper or paper is not properly loaded in the indicated paper tray.
No Paper Fed #2: SMART PANEL Brother-MFC-9420CN:The machine is out of paper or paper is not properly loaded in the indicated paper tray.
No Response/Busy: SMART PANEL Brother-MFC-9420CN:The number you dialed does not answer or is busy.
No Toner X: SMART PANEL Brother-MFC-9420CN:The toner cartridge is not installed properly.
No TR Roller: SMART PANEL Brother-MFC-9420CN:The transfer roller is not installed.
Not Registered: SMART PANEL Brother-MFC-9420CN:You tried to access a one-touch or speed dial number that is not programmed.
Paper Jam X: SMART PANEL Brother-MFC-9420CN:Remove the jammed paper. See the alphanumerical diagram to check on the location.
Paper Type Error: SMART PANEL Brother-MFC-9420CN:The wrong media type is set in the paper tray.
Replace 120K Kit: SMART PANEL Brother-MFC-9420CN:It is time to replace the 120K kit.
Replace Fuser: SMART PANEL Brother-MFC-9420CN:It is time to replace the fusing unit.
Replace OPC Belt: SMART PANEL Brother-MFC-9420CN:It is time to replace the OPC belt cartridge.
Replace PF Kit2: SMART PANEL Brother-MFC-9420CN:It is time to replace the PF kit2.
Size Error Tray2: SMART PANEL Brother-MFC-9420CN:The wrong size of paper is set in the printer driver for tray2.

1.4 Fluent Disassembly and Reassembly Brother-MFC-9420CN Printer.
1.5 Diagnostic all errors are generated by Brother-MFC-9420CN Printer.
1.6 How to refill toner Brother-MFC-9420CN.
1.7 How to update firmware fix Brother-MFC-9420CN.
1.8 How to fix all error cause by toner cartridge Brother-MFC-9420CN: toner cartridge not competition, install toner cartridge, toner exhausted, toner low, toner empty…
1.9 How to fix all fusser error, LSU error Brother-MFC-9420CN.
2.0 How to fix main board error, formater board error Brother-MFC-9420CN.
2.1 How to troubleshooting printer problem with low quality page Brother-MFC-9420CN.
2.2 How to fix error : door open close it Brother-MFC-9420CN.
2.3 How to fix : error status(red light status, red light blinking…) Brother-MFC-9420CN (when printing).
2.4 How to fix error about imaging unit: empty image, imaging unit is not installed…Brother-MFC-9420CN.
2.5 How to fix paper jam inside, outside, output…Brother-MFC-9420CN.
2.6 How to login maintenance mode Brother-MFC-9420CN.
2.7 How to fix sensor failure, turn off then on…Brother-MFC-9420CN.

Brother-MFC-9420CN Printer Service Manual covers following topics:

Brother-MFC-9420CN-Service-Repair-Manual

– Precautions Brother-MFC-9420CN.
– Product Specification Brother-MFC-9420CN.
– System Overview Brother-MFC-9420CN.
– S/W Structure and Descriptions Brother-MFC-9420CN.
– Disassembly and Reassembly Brother-MFC-9420CN.
– Alignment and Adjustments Brother-MFC-9420CN.
– Troubleshooting Brother-MFC-9420CN.
– Exploded Views & Parts List Brother-MFC-9420CN.

– Block diagram,schematic Brother-MFC-9420CN.

Block Diagram Brother-MFC-9420CN

Block Diagram Brother-MFC-9420CN

– Connection Diagram

connection-diagram-Brother-MFC-9420CN

connection-diagram-Brother-MFC-9420CN

Send comment