III-3
(6) ROM
block
ROMs store the CPU control program and font data. ROMs are two 32Mbit
masked ROMs.
Optional sockets are available for two 8Mbit EPROM (µPD27C8000DZ-120 - NEC
or equivalent) for expansion.
ROM access time should be less than 120nsec.
(7) DRAM
block
DRAMs are used for receiving buffer or working area of the CPU. The DRAM
block contains four 16Mbit DRAMs, thus having 8MB memory capacity in total.
The refreshing method is CBR (Cas Before Ras).
DRAM access time should be less than 80nsec.
Summary of Contents for 2060
Page 1: ...MECHANICS ELECTRONICS SERVICE MANUAL LASER PRINTER ...
Page 41: ...III 8 A B F C D E 1 E 2 E 3 E 4 E 5 F Figure 3 7 Paper Feed Size SW PCB Circuit ...
Page 130: ...VII 16 Test for memory MEMORY DISPLAY MEMORY DEBUG MEMORY TEST exit MENU ...
Page 138: ...Appendix A 3 Main PCB Circuitry Diagram 1 7 CODE UK4058000 B512006 CIR 1 7 NAME A 3 ...
Page 139: ...Appendix A 4 Main PCB Circuitry Diagram 2 7 CODE UK4058000 B512006 CIR 2 7 NAME A 4 ...
Page 140: ...Appendix A 5 Main PCB Circuitry Diagram 3 7 CODE UK4058000 B512006 CIR 3 7 NAME A 5 ...
Page 141: ...Appendix A 6 Main PCB Circuitry Diagram 4 7 CODE UK4058000 B512006 CIR 4 7 NAME A 6 ...
Page 142: ...Appendix A 7 Main PCB Circuitry Diagram 5 7 CODE UK4058000 B512006 CIR 5 7 NAME A 7 ...
Page 143: ...Appendix A 8 Main PCB Circuitry Diagram 6 7 CODE UK4058000 B512006 CIR 6 7 NAME A 8 ...
Page 144: ...Appendix A 9 Main PCB Circuitry Diagram 7 7 CODE UK4058000 B512006 CIR 7 7 NAME A 9 ...
Page 145: ...Appendix A 10 Control Panel PCB Circuitry Diagram 1 1 CODE UK4077000 B512005 CIR NAME A 10 ...
Page 146: ...Appendix A 11 Laser LD PCB Circuitry Diagram 1 1 CODE UK3253000 B48K253 CIR NAME A 11 ...
Page 148: ...June 98 54T046NE0 HL2060 ...
Page 149: ...LASER PRINTER PARTS REFERENCE LIST HL 2060 ...
Page 168: ...14 PACKING MATERIALS MODEL HL 2040 54T U04 930 2 2 3 9 6 7 5 8 10 1 11 4 17 ...
Page 171: ......
