Brother International HL-1660E Service Manual - Page 90

M-9 "16 TONER EMPTY " is displayed Possible cause Step Check Result Remedy EP-ED cartridge 1 Take the EP-ED cartridge out of the printer Yes The problem was caused by and rock it to distribute the toner evenly. toner onesided due to too When the cartridge is returned to the printer, does the LCD show "00 READY"? little toner remaining. Prepare to replace the new cartridge. High-voltage electrode 2 Are the developing bias or the toner sensor Yes Clean the electrode. electrode of the high-voltage power supply PCB assy dirty? High-voltage power supply PCB 3 Is the voltage of P4-13 in high-voltage power Yes Replace the high-voltage supply PCB connector higher than that of P4-11, power supply PCB assy. when the EP-ED cartridge which is full with toner is installed? HV harness Main PCB 4 Is the voltage of P6-13 in the main PCB connector higher than that of P6-11? Yes Replace the HV harness. No Replace the main PCB assy. M-10 "13 JAM XXXXXX" is not displayed even if a paper jam has occured (or is displayed even if a paper jam has not occurred) XXXXXX is TRAYS/INSIDE/REAR/DUPLEX. Possible cause Step Check Result Remedy Actuator 1 Does the actuator of the paper delivery sensor No Reassemble or replace the or the registration sensor operate smoothly? paper delivery actuator and regist sensor actuator. Paper delivery 2 Does the voltage of P2-1 in the fixing PCB sensor connector rise from 0V to 5V when the eject Regist sensor sensor is covered, or the voltage of P5-5 in the paper feeder PCB connector rise from 0V to 5V when the registration sensor is covered? No Replace the fixing PCB assy or the paper feed/size-sw PCB assy. Fuser harness 3 Does the voltage of P11-1 in the main PCB No Replace the fuser harness Feed flat cable connector rise from 0V to 5V when the eject or the feed flat cable. sensor is covered, or the voltage of P3-5 in the main PCB connector rise from 0V to 5V? Yes Replace the main PCB assy. VI - 14