Brother International HL-2400C Service Manual - Page 114
DCN14: IOD1 PCB - High Voltage Unit 18 pins
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(1) DCN2: IOD1 PCB - Power Supply Unit (22 pins) Pin No. Signal Pin No. Signal 1 +5v - 1 3 +5v - 1 5 ACSYNC - N 2 SGND 4 SGND 6 SGND 7 +24V 9 +5v - 1R 8 SGND 10 ACOFF - P 11 HON - N 13 +24V - 1 15 +24V - 1 12 TESTI2 14 TESTO2 16 TESTI1 17 +24V - 1 19 PGND 18 TESTO1 20 PGND 21 PGND 22 PGND (2) DCN14: IOD1 PCB - High Voltage Unit (18 pins) Pin No. 1 3 5 7 9 11 13 15 17 Signal +24v - 1 FUCHK ACVON - N CHVON - N CBVPWM - N DBV(MC)PWM - N DBV(KY)PWM - N FCBVPWM - N NC Pin No. 2 4 6 8 10 12 14 16 18 Signal PGND PGND PWMON - N CHVERR THVRON - N THVPWM - N THV - I TH1 TH2 (3) DCN3: For Factory Use Only (4 pins) Pin No. Signal 1 TESTO1 2 TESTI1 3 TESTO2 4 TESTI1 (4) DCN4: IOD1 - Interlock Switch Pin No. Signal 1 REARDOPEN - P 2 NC 3 TOPDOPEN - P IV-65