Table of Contents Page....7. PC-FAX RX (Option) 274....8. ISDN PC-FAX G3 TX (Option) 275....9. ISDN PC-FAX G3 RX (Option) 276....10. ISDN G3 TX (Option) 277....11. ISDN G3 RX (Option) 278....12. G4 TX (Option) 279....13. G4 RX (Option) 280....14. LAN Print (Option) 281....15. Internet Fax Tx (Option) 281....16. G3 Dual Ine Tx (MH/MR/MMR) (Option) 281....17. G3 Dual Line Rx (MH/MR/MMR) (Option) 281A2.2 Explanation of Signal Flowchart 281A3.1 MCNT 281....A3.1.1 CPU....A3.1.2 IOGA5....A3.1.3 Scanner Control....A3.1.4 JBIG Control....A3.1.5 Scanner Motor Control....A3.1.6 CPU Peripheral Circuits....A3.1.7 LED Head Control....A3.1.8 Heater Control....A3.1.9 Printer Motor Control....A3.1.10 Toner Low Detection 282....A3.1.11 Centronics Parallel Interface 283....A3.1.12 Electrophotographic Process 284....A3.1.13 Process Operation Descriptions 285A3.2 OPE Control 285A3.3 MODEM C34 PC Board 285....IC201 Pin Assignment 285....IC202 Pin Assignment 285A3.4 UNC, WN5, FN5 and DN5 Circuit Diagram 285A3.4 Description on the NCU Block Diagram 285....A3.4.1 UNC circuit diagram 285....A3.4.2 WN5 circuit diagram 285....A3.4.3 FNS circuit diagram 285....A3.4.4 DN5 circuit diagram 285
