Brother International HL-2400C Service Manual - Page 262
Is the connection between ECN16 of IOD2 and Clutch DCLM OK ?
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Error Code Name of Part D2 Developer Clutch (DCLM) VIII-17 Check the Connector. Is the connection between ECN16 of IOD2 and Clutch (DCLM) OK ? NO Is the harness of Clutch (DCLM) broken ? YES Check the voltage at DCLM ON-N. Does the voltage drop( Does the voltage jump( +24V)between ECN16-3 and ECN2-8? YES NO )between ECN1-2 and ECN2-12 ? YES NO Replace current MCTL PCB with a one. NO Is D2 Error cleared ? YES Finished Connect the harness. Connect the connector properly. Is D2 Error cleared ? YES NO Finished Replace the clutch (DCLM) with a new one. Replace IOD2 PCB with a new one. Is D2 Error cleared ? YES NO Finished Re-check from beginning of section. MCTL IOD2 12CN DCL(M)ON-P ECN1 ECN16 2 2 1 3 +24V-1 DCL(M)ON-N DCLM ECN2 +24V-1 5 PGND 8 SGND 12