EPSON Stylus PHOTO 895/785EPX/915/825
Revision B
Operating Principles
Electrical Circuit Operating Principles
49
Following shows you the major characteristic of this main board.
Use of the newly designed board C408/C498 MAIN
This product uses the newly developed C408/C498 MAIN board with the
PCMCIA card slot, preview monitor (option) and monochrome panel (LCD)
added. This board is divided into the printer and Printon sections. The same
control as the conventional models is operated in the printer section, and the
control for the PCMCIA slot, monochrome panel and printer PNL is operated in
the Printon section.
Applicable to the ECP mode
The parallel IF, which connects the printer and Printon sections, can receive the
high speed data by means of the DMA function up to at the maximum
500 kbytes/second. The product can also receive the data transmitted at the
maximum 800 kbytes/second (ECP mode) in compliance with the IEEE1284 since
it is applicable to the ECP mode.
Applicable to the USB (Universal Serial Bus) Rev.1.1IF (Full speed/12 Mbps.
without a hub)
Motor current control by D/A of CPU and ladder circuit of resistors
Use of united IC of the reset circuit and EEPROM for the simple system design.
Low power consumption is realized by designing logic circuit on the 3.3V power
supply. The following table shows the chips that operate by 3.3V and +5V.
Use of the HJFK image processing
SDRAM is mounted.
Table 2-8. 3.3V & 5V Drive Chips
+3.3V
+5V
• CPU
• P-ROM
• D-RAM
• SD-RAM
• Sensors
• I/F Circuit
• PNL Board
Содержание Stylus Photo785EPX
Страница 1: ...EPSON STYLUSPHOTO895 785EPX 915 825 Color Inkjet Printer SEIJ01001 SERVICE MANUAL ...
Страница 9: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 31: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 55: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 69: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 116: ...C H A P T E R 5 ADJUSTMENT ...
Страница 137: ...C H A P T E R 6 MAINTENANCE ...
Страница 146: ...C H A P T E R 7 APPENDIX ...
Страница 168: ...04 PM 790PT EPSON STYLUS PHOTO 785EPX 895 10304 Rev 02 No 5 08 09 10 07 For ESP ECC ETT 02 05 01 ...
Страница 175: ...EPSON STYLUS PHOTO 825 915 331 451 450 A C498 ELEC 001 Rev 01 No 03 200 300 330 A ...
Страница 179: ...Except ETT 714 ESPON STYLUS PHOTO 825 915 C498 MECH 004 Rev 01 No 07 706 710 736 704 708 718 705 712 702 701 703 X ...
Страница 180: ...752 751 753 719 126 757 129 754 746 No 08 Rev 02 EPSON STYLUS PHOTO 825 915 126 760 128 C498 MECH 0051 715 ...
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