Brother International HL-2400C Service Manual - Page 268
Replace the IOD2 PCB., Replace the IOD1 PCB.
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VIII-23 Error Code E2 Concerned Part Main Motor(MM) Does the belt cartridge rotate lightly ? YES Does the fuser unit rotate lightly ? YES Check the connectors. Is ECN12 of IOD2 properly connected with connector DM1 ? Is ECN2 of IOD2 properly connected with DCN9 of IOD1 ? Is ECN1 of IOD2 properly connected with 12CN of MCTL ? YES Check the voltage:+24V-1 and +5V-1. +24V-1: Is there +24V between MM1-4 and 5, ECN12-4 and 5, ECN2-5 and 8 ? +5V-1: Is there +5V between MM1-6 and 7, ECN12-6 and 7, ECN2-11 and 12 ? NO Replace the IOD2 PCB. Is E2 error cleared ? NO Replace the IOD1 PCB. Is E2 error cleared ? YES Finished. NO Replace the belt cartridge. NO Replace the fuser unit. Is E2 error cleared ? YES NO NO Replace developer gear unit and motor. Is E2 error cleared ? NO YES Finished. Finished. YES Replace the main motor. Is E2 error cleared ? YES Finished. NO Replace the MCTL PCB. YES Finished. MCTL 12CN 7 8 9 10 MMCLK MMON-N MMREV-N MMENC IOD2 7 8 ECN1 9 10 ECN12 IOD1 ECN2 5 +24V-1 5 1 2 3 4 5 6 MMRDY-N MMON-N MMCLK PGND +24V-1 SGND +5V-1 MM1 1 2 3 4 5 6 MM 8 PGND 8 7 MMENC 7 11 +5V-1 11 8 MMREV-N 8 12 SGND 12 9 9