Brother FAX5750e All About this machine Error Code: All codes 71 72 73 74 75 76 77 78 79 7A 7B 7C 80 82 83 84 85 86 88 A1 A2 A3 A4 A7 A8 A9 AC AE AF B1 B2 B3 B4 B7 B8 BA BB BC BD BE BF D5 E4 E6 E8 EA F5 F6 Code: 7C Description: Engine PCB error. Error Code Service Mode, Troubleshooting Parts Catalog Compatibility Downloads Files Home Email: Password: Sign In New Register Forgot Password? Send message to us