Operating Principles
Rev. A
2-13
2.2 Circuit Operating Principles
The power source of this printer is composed of the power switch, AC cable and C124
PSB/PSE board. It supplies DC voltage used to control the printer operation.
2.2.1 Power Supply Voltage
The electrical circuit of this printer uses an RCC (ringing choke converter) type switching
regulator, which outputs DC voltage required to operate the printer. DC voltage is divided
into 3 blocks: +35 VDC (CH. A), +35 VDC (CH. B) and +5 VDC, as listed below.
Table 2-9. DC Voltage Application
Voltage level
Connector No.
Application
+35 VDC
10%
CN2
CH. A
CR motor
Printhead drive voltage
CH. B
Printhead
Cooling fan motor
PF motor
Ribbon motor
Vpp of the flush memory
+5 VDC
5%
CN3
Logic
Hold voltage for the PF motor
Hold voltage for the ribbon motor
Serial I/F level converter
Type-B I/F power supply voltage
I/F power supply
Summary of Contents for DLQ-3000+
Page 1: ...EPSON EPSON EPSON France S A SERVICE MANUAL DLQ 3000 PRODUIT ...
Page 2: ...EPSON 24 PIN DOT MATRIX PRINTER EPSON DLQ 3000 SERVICE MANUAL SEIKO EPSON CORPORATION 4008259 ...
Page 6: ...v REVISION SHEET Revision Issued Data Contents Rev A August 21 1997 First Release ...
Page 62: ...2 3 12 Other Sensor Circuits 2 30 ...
Page 160: ...Chapter 6 Maintenance 6 1 Maintenance 6 1 6 1 1 Lubrication and Adhesion 6 1 ...
Page 171: ...DLQ 3000 Rev A A 6 ...
Page 172: ...Appendix Rev A A 7 A 2 Circuit Diagrams Figure A 2 C210 MAIN Board Circuit Diagram 1 2 ...
Page 173: ...DLQ 3000 Rev A A 8 ...
Page 174: ...Appendix Rev A A 9 Figure A 3 C210 MAIN Board Circuit Diagram 2 2 ...
Page 175: ...DLQ 3000 Rev A A 10 ...
Page 177: ...DLQ 3000 Rev A A 12 Figure A 5 C124 PSB Board Circuit Diagram ...
Page 180: ...Appendix Rev A A 15 Figure A 8 C210 MAIN Board Component Layout 2 2 ...
Page 181: ...DLQ 3000 Rev A A 16 Figure A 9 C124 PSB Board Component Layout ...
Page 182: ...Appendix Rev A A 17 Figure A 10 C124 PSE Board Component Layout ...
Page 189: ...EPSON SEIKO EPSON CORPORATION ...
Page 254: ...PC 437 USA Europe standard Annexe A 27 ...
Page 255: ...PC 850 Multilingue PC 860 Portugais PC 863 Français canadien PC 865 Norvégien A 28 Annexe ...
Page 256: ...PC861 Islandais BRASCII Portugais brésilien Abicomp Portugais brésilien Annexe A 29 ...
Page 259: ...A 32 Annexe ...
Page 262: ...Utilisation du sommaire des commandes A 10 V Vitesse 2 25 W Windows Microsoft 1 17 18 Index 3 ...