Brother International MFC-P2000 Service Manual - Page 83

I-11 Poor fixing Possible cause Printing paper Toner sensing failure Thermistor failure Low-voltage power supply PCB failure Step 1 Check Is thick paper of more than 42 lb. weight in use? 2 Is the problem solved by replacing the drum unit or the toner cartridge? (When printing is faint.) 3 Is the thermistor fitted correctly? 4 Is the problem solved by replacing the low-voltage power supply PCB? Result Remedy Yes Instruct the user to use paper of the recommended weight and thickness. Yes Toner is empty. The toner sensing is defective, clean the toner sensor. If the wiper in the toner cartridge is broken, replace the toner cartridge with a new one. No Fit the thermistor correctly. Yes Replace the low-voltage power supply PCB. IV-14