PRINCIPLES OF OPERATION
REV.-A
Reset Caused by CPU
A LOW signal from CPU port PB6 passes through the low-pass filter formed by R64 and C40 and inputs
to pin 47 of the IC7A gate array. In the array, waveform shaping occurs and causes the DISC terminal to
go LOW; the charge on capacitance C19 is then released, and terminal THLD of the gate array goes LOW.
The reset signal is then output by the ROUT terminal.
INIT Signal Input (from CN1 or CN2)
When the INIT signal is input from either the host interface or optional interface, the CPU performs initial-
ization. From the interface, the INIT signal passes through the low-pass filter formed by R62 and C9 and
inputs to the NMI offering terminal of the CPU. The NMI offering terminal will also input the voltage of the
+24 VDC line formed by Zener diode ZD2 and transistor Q32.
+ 2 4 V
ZD2
M A 4 1 6 0
R17
10k
1 . 6 K
G
P
C42
4 7 0 P
R96
2 2 0 K
C
1
6
CPU
Figure 2-39. INIT Signal Input Circuit
2-32
LQ-510
Summary of Contents for AP-4000
Page 1: ...LQ 510 AP 4000 T E C H N I C A L M A N U A L EPSON ...
Page 4: ...REV A REVISION SHEET iv LQ 510 ...
Page 103: ...REV A PRINCIPLES OF OPERATION LQ 510 Figure 2 68 A D Converter Circuit 2 61 ...
Page 125: ...OPTIONAL EQUIPMENT REV A 3 16 Figure 3 12 Lubrication Points 2 LQ 510 ...
Page 167: ......
Page 192: ...MAINTENANCE REV A L __ w w n Figure 6 3 LQ 510 Lubrication Points 6 3 LQ 510 ...
Page 202: ...APPENDIX REV A Table A 6 E01A05 Pin Functions A 8 LQ 510 ...
Page 212: ...3 L CN 1 ...
Page 213: ...REV A APPENDIX Figure A 25 SANPSE Board Component Layout LQ 510 A 19 ...
Page 214: ...REV A APPENDIX J Figure A 26 SANPSE Board Circuit Diagram A 20 LQ 510 ...
Page 215: ...REV A APPENDIX Figure A 27 SANPNL W Board Circuit Diagram LQ 510 A 21 ...
Page 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 ...
Page 220: ...h i ...
Page 221: ...REV A APPENDIX 506 Figure 14 32 Model 5710 Printer Mechanism Exploded Diagram A 29 ...
Page 222: ...APPENDIX REV A Figure A 33 C80006 Pull Tractor Exploded Diagram A 30 LQ 510 ...
Page 223: ... Y ...
Page 224: ...APPENDIX REV Figure A 35 LQ 510 Printer Cover A Case Outline Drawing A 32 LQ 510 ...
Page 225: ...APPENDIX REV A J 2 7 J Bl Figure A 36 LQ 510 Printer Cover B Case Outline Drawing LQ 510 A 33 ...
