Brother International HL-2400C Service Manual - Page 259
Chart 8-4 Troubleshooting, Failure of MCTL PCB.
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Chart 8-4 Troubleshooting Code C3 Description of Error Cause of Error 1. Failure of MCTL PCB. NVRAM Error • CPU • EEPROM Clearance Method 1. Turn off and on the power switch. 2. If method 1 does not work, carry out the "C3 Error Clearance Procedure". 3. Replace the failed MCTL PCB with a new one. C3 Does the error repeat after turning the power switch on and off? NO YES Does the error repeat after carrying out the "C3 Error Clearance Method" ? NO YES Replace the failed MCTL PCB with a new one. The printer is OK. The printer is OK. VIII-14 Code Description of Error Cause of Error Hard Error of MCTL 1. Failure of MCTL PCB. C4 Control Circuit. Clearance Method 1. Turn off and on the power switch. 2. Replace the failed MCTL PCB with a new MCTL PCB. C4 Does the error repeat after turning the power switch off and on? NO YES Replace the failed MCTL PCB with a new one. The printer is OK.