EPSON Stylus Pro 7500
Revision A
Operating Principles
Control Circuit (C299MAIN Board) Outline
73
Table 2-4. Control Circuit Operation
Name/Code
Location
Function
CPU (C90A14CA)
SH7043
IC8
32 bit RISC-CPU
• Clock speed = 32.768MHz
• 128KB PROM (IPL) internal
ASIC (E06A4610A)
IC9
I/O port expansion
ASIC (E05B61AA)
IC13
1) Regulates print data
• Command handling
• Rasterizer (image data handling)
• Head drive regulation (DAC control)
• Print timing regulation
2) Memory (DRAM/SRAM)
3) I/F Circuit Control
• Parallel interface (IEEE1284)
• USB interface
• Type-B
ASIC (TE7751)
IC20
Motor regulation
• Pump Motor (pump/PG)
• Cutter solenoid
• Fan (Paper suction) x2
ASIC (uPD65802)
IC32
Motor regulation (PWM regulation)
• CR Motor
• PF Motor
DAC (M65530FP)
IC37
3 channel 10 bit DA converter
• head-drive voltage control
Flash Memory
(MBM29F400TC)
IC1, IC2
Flash Memory (1Mbyte)
• Save firmware
• Register D/A, user defined, and factory
default setting parameters
DRAM (EDO)
IC73~76
IC81, IC82
EDO RAM
• 10Mbyte (onboard)
SRAM (LC3564SM-
10)
IC39
64Kbit SRAM
• External data ring buffer type
EEPROM
IC61
Serial EEPROM
Head drive D/A factory adjustment
parameters
USB-ID factory settings
M51953BFP
IC80
Reset IC
Driver IC (L6203)
IC33, IC35
CR/PF Motor Drivers
Driver IC (LB1845)
IC30
Pump Motor Driver
Driver IC
(MMDF205ZR2)
IC41, IC43
Suction fan x2 and cutter solenoid driver
PQ3RD13
IC15
+3.3V regulator
Table 2-4. Control Circuit Operation (continued)
Name/Code
Location
Function
Summary of Contents for Stylus Pro 7500
Page 1: ...EPSONStylusPRO7500 Color Large Format Inkjet Printer SEIJ00005 SERVICE MANUAL ...
Page 6: ...Revision Status Revision Issued Date Description Rev A August 31 2000 First Release ...
Page 10: ...C H A P T E R PRODUCTDESCRIPTION ...
Page 57: ...C H A P T E R OPERATINGPRINCIPLES ...
Page 75: ...C H A P T E R TROUBLESHOOTING ...
Page 95: ...C H A P T E R DISASSEMBLY ASSEMBLY ...
Page 169: ...C H A P T E R 0 ADJUSTMENT ...
Page 192: ...PSON Stylus Pro 7500 Revision A djustment Adjustment Steps 192 Figure 5 13 Adjustment Menu ...
Page 235: ...C H A P T E R MAINTENANCE ...
Page 241: ...C H A P T E R APPENDIX ...
Page 258: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 258 Figure 7 2 Frame Assembly ...
Page 260: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 260 Figure 7 4 Head Assembly ...
Page 262: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 262 Figure 7 6 Frame Accessory ...
Page 265: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 265 Figure 7 9 Cable Guide ...
Page 267: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 267 Figure 7 11 Cover Assembly ...
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