Epson SQ-B50/2550 Technical Manual page 258

REV.-A
Figure A-18. L5431-AA Pin Diagram A-23
Figure A-19. L5431-AA Internal Circuit A-23
Figure A-20. MN6275AS Pin Assignment A-24
Figure A-21. MN6275AS Block Diagram A-24
Figure A-22. HD74HC292 Block Diagram A-25
Figure A-23. SEIPS Board Component Layout A-27
Figure A-24. SEIPS Board Circuit Diagram A-28
Figure A-25. SANPSE Board Component Layout A-29
Figure A-26. SANPSE Board Circuit Diagram A-30
Figure A-27. SEIPNL-W Board Circuit Diagram A-31
Figure A-28. SEIMA Board Component Layout A-32
Figure A-29. SEIMA Board Circuit Diagram A-33
Figure A-30. SQ-850 Exploded Diagram A-34
Figure A-31. SO-2550 Exploded Diagram A-35
Figure A-32. Model-4410 Printer Mechanism Exploded Diagram A-36
Figure A-33. Model-4460 Printer Mechanism Exploded Diagram A-37
Figure A-34. SQ-850 External Dimension Diagram A-39
Figure A-35. SO-2550 External Dimension Diagram A-40
LIST OF TABLES
Table A-1. SEIMA Board Primary ICs A-1
Table A-2. HD64180 Terminal Functions A-4
Table A-3. E05A09BA Terminal Functions A-7
Table A-4. E05A21 AA Terminal Functions A-10
Table A-5. E05A22EA Terminal Functions A-12
Table A-6. E05A24GA Terminal Functions A-15
Table A-7. E05A23GC Terminal Functions A-18
Table A-8. HD74HC292P Function Table A-25
Table A-9. SEIPS/SANPSE Board Primary ICs A-26
Table A-10. Parts Name Reference Table A-38
A-ii