REV.-A
PRINCIPLES
OF
OPERATION
2.3 PRINTER MECHANISM AND CONTROL CIRCUIT OPERATION
This section describes the operation of printer mechanism and control circuit.
2.3.1 Vx VOLTAGE SUPPLY CIRCUIT
When the +24 V power supply line reaches 11.6 V (11 V + 0.6 V), transistors Q33 and Q34 turn on and
Vx (+ 5 V) is output. On the other hand, if the 24 V power supply line drops to 11.6 V or less, Q33 and Q34
turn off, and the Vx voltage is shut off.
The Vx voltage is used to prevent abnormal operation of the printer when the power is switched on or off.
Reset Circuit Power Supply
When the power is switched on or off, the circuit is reset so that it will not drive the printer until the power
supply stabilizes.
Pull-Ups for the Printhead Signal Lines
These prevent printhead malfunctions when power is switched on or off.
Pull-ups for the Paper-Feed Motor Signal Lines
These prevent paper-feed motor malfunctions when power is switched on or off.
+ 2 4 V + 5 V
I
R32
4 3 0
Figure 2-34. Vx Voltage Circuit
LQ-510
2-27
Содержание AP-4000
Страница 1: ...LQ 510 AP 4000 T E C H N I C A L M A N U A L EPSON ...
Страница 4: ...REV A REVISION SHEET iv LQ 510 ...
Страница 11: ...GENERAL DESCRIPTION REV A Printer Cover A Printer Cover B Figure l l Exterior Views of the LQ 510 1 2 LQ 510 ...
Страница 103: ...REV A PRINCIPLES OF OPERATION LQ 510 Figure 2 68 A D Converter Circuit 2 61 ...
Страница 125: ...OPTIONAL EQUIPMENT REV A 3 16 Figure 3 12 Lubrication Points 2 LQ 510 ...
Страница 167: ......
Страница 192: ...MAINTENANCE REV A L __ w w n Figure 6 3 LQ 510 Lubrication Points 6 3 LQ 510 ...
Страница 202: ...APPENDIX REV A Table A 6 E01A05 Pin Functions A 8 LQ 510 ...
Страница 207: ...REV A APPENDIX CEJ S K D I D O Figure A 14 Timing Chart Read Figure A 15 Timing Chart Write LQ 510 A 13 ...
Страница 212: ...3 L CN 1 ...
Страница 213: ...REV A APPENDIX Figure A 25 SANPSE Board Component Layout LQ 510 A 19 ...
Страница 214: ...REV A APPENDIX J Figure A 26 SANPSE Board Circuit Diagram A 20 LQ 510 ...
Страница 215: ...REV A APPENDIX Figure A 27 SANPNL W Board Circuit Diagram LQ 510 A 21 ...
Страница 216: ... w 3 0 4 CN1 14 18 22 I IP I9 3 1 2LSl39 2 6 8 2 4 9 TOM4 BOARD Y 4 5 4 2 0 9 0 0 0 0 0 ...
Страница 220: ...h i ...
Страница 221: ...REV A APPENDIX 506 Figure 14 32 Model 5710 Printer Mechanism Exploded Diagram A 29 ...
Страница 222: ...APPENDIX REV A Figure A 33 C80006 Pull Tractor Exploded Diagram A 30 LQ 510 ...
Страница 223: ... Y ...
Страница 224: ...APPENDIX REV Figure A 35 LQ 510 Printer Cover A Case Outline Drawing A 32 LQ 510 ...
Страница 225: ...APPENDIX REV A J 2 7 J Bl Figure A 36 LQ 510 Printer Cover B Case Outline Drawing LQ 510 A 33 ...
