EPSON Stylus Photo 925
Revision A
Operating Principles
Electrical Circuit Operating Principles
40
2.2 Electrical Circuit Operating Principles
The electric circuit of the Stylus Photo 925 consists of the following boards.
V
Main board:
C475 MAIN
V
Power supply board: C408 PSB/PSE
V
Panel board:
C475 PNL
This section provides operating principles of C475 MAIN Board and C408 PSB/PSE
Board. Refer to ê} 2-16. "Electric Circuit" for the major connection of the each boards
and their roles.
Figure 2-16. Electric Circuit
2.2.1 C408 PSB/PSE board
The power supply boards of Stylus Photo 925 use a RCC (Ringing Chalk Converter)
circuit, which gen42VDC for drive line and +5VDC, +3.3VDC for logic line to
drive the printer. The application of the output voltage is described below.
Printer section
Printer section
C408 PSB/PSE
Board
C475 MAIN Board
+3.3VDC +5VDC
C475 PNL Board
CR Motor
PF Motor
ASF Motor
Head Driver Board
HP/PE Sensor
Cutter Motor
Printer
Mechanism
Table 2-9.Application of the DC Voltages
Voltage
Application
+42VDC
• Motors (CR Motor, PF Motor, ASF Motor, Cutter Motor)
• Print Head common voltage
• Print Head nozzle selector 42V drive voltage
+5VDC
• C475 MAIN control circuit logic
• Sensor
+3.3VDC
• C475 MAIN control circuit logic
Summary of Contents for Stylus Photo 925
Page 1: ...EPSON STYLUSPHOTO925 Color Inkjet Printer SEOT02006 SERVICE MANUAL ...
Page 5: ...Revision Status Revision Date of Issue Description A June 21 2002 First release ...
Page 11: ...C H A P T E R PRODUCTDESCRIPTION ...
Page 27: ...C H A P T E R OPERATINGPRINCIPLES ...
Page 50: ...C H A P T E R TROUBLESHOOTING ...
Page 73: ...C H A P T E R DISASSEMBLYANDASSEMBLY ...
Page 118: ...C H A P T E R ADJUSTMENT ...
Page 137: ...C H A P T E R MAINTENANCE ...
Page 146: ...C H A P T E R APPENDIX ...
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