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III –
15
DRAM No.
#10
#11
#12
#15
Model
FAX3550/MFC4550
––
4M x 8 bits
4M x 8 bits
––
FAX8000P/MFC6550MC/
––
4M x 8 bits
4M x 8 bits
––
9000/9500
MFC7550MC
––
––
––
16M x 16 bits
–– : Not installed
1
2
3
4
5
6
#12
#15
#11
#10
#2
#3
Main PCB Circuit Diagram 2/7
1
FAX3550/3650/8000P/8200P/MFC4450/4550/6550MC/7550MC/9000/9500:
ROM (8-megabit, 512K x 16 bits) which stores programs.
MFC4550plus/7650MC: Flash ROM (8-megabit) which stores programs.
2
ROM (8-megabit, 512K x 16 bits)
FAX3550/3650/8000P/8200P/MFC4450/4550/4550plus:
This ROM is used only on the qualification machines for demonstration.
MFC6550MC/7550MC/7650MC/9000/9500:
This ROM stores the PCL4 (Driver programs for high-quality print).
3
DRAMs
FAX3550/8000P/MFC4550/6550MC/7550MC/9000/9500:
FAX3650/8200P/MFC4450/4550plus/7650MC:
DRAM No.
#10
#15
Model
FAX3650/8200P
––
16M x 16 bits
MFC4450
4M x 16 bits
4M x 16 bits
MFC4550plus
4M x 16 bits
4M x 16 bits
MFC7650MC
––
16M x 16 bits
–– : Not installed
Summary of Contents for MFC 4550
Page 5: ...CHAPTER I GENERAL DESCRIPTION ...
Page 14: ...CHAPTER II INSTALLATION ...
Page 15: ...CONTENTS 1 INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT II 1 ...
Page 18: ...CHAPTER III THEORY OF OPERATION ...
Page 49: ...CHAPTER IV DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 81: ...CHAPTER V MAINTENANCE MODE ...
Page 89: ...V 7 Scanning Compensation Data List 200 dpi ...
Page 133: ...CHAPTER VI ERROR INDICATION AND TROUBLESHOOTING ...
Page 163: ...MAIN 8 8 FAX3550 3650 8000P 8200P MFC4550 6550MC 7550MC MFC9000 9500 A ...
Page 185: ...D CONTROL PANEL 1 2 ...
Page 187: ...E POWER SUPPLY 120 V Low voltage power supply ...
Page 188: ...E POWER SUPPLY 200 240 V Low voltage power supply European versions ...
Page 189: ...E POWER SUPPLY 200 240 V Low voltage power supply Asian versions ...
Page 190: ...E POWER SUPPLY High voltage power supply ...
Page 191: ...Sept 98 5X52012 Printed in Japan ...