Brother International HL-2400C Service Manual - Page 267

Error Code E1 Concerned Part Developer Motor(DM) Is there any unusual rotation noise while printing ? YES Replace the toner cartridge. NO Check the connector. Is the noise cleared ? YES NO Is ECN15 of IOD2 properly connected with the connector of DM1? NO YES Replace developer gear unit and motor. Is ECN1 of IOD2 properly connected with DCN9 of IOD1? NO Connect the connectors properly. YES Is ECN1 of IOD2 properly connected with I2CN of MCTL? Is E1 error cleared ? YES NO Check the voltage: +24V-1 and +5V-1. Finished Finished VIII-22 +24V-1: Is there +24V between DM1-4 and 5,ECN15-4 and 5, ECN2-5 and 8 ? +5V-1: Is there +5V between DM1-6 and 7,ECN15-6 and 7, ECN2-11 and 12 ? NO Replace the IOD2 PCB. Is E1 error cleared ? NO Replace the IOD1 PCB. Is E1 error cleared ? YES Finished YES Replace the developer motor. YES Finished LVPS NO Replace the MCTL PCB. MCTL 12CN IOD2 DM1 11 DMCLK 11 ECN1 1 DMRDY-N 1 12 DMON-N 12 ECN 15 IOD1 ECN2 5 DCN9 8 11 12 +24V-1 PGND +5V-1 SGND 5 8 11 12 2 3 4 5 6 7 8 9 DMON-N DMCLK PGND +24V-1 SGND +5V-1 NC DMREV-N 2 3 4 5 6 7 8 9 DM