REV.-A
Power On
CPU Self Reset
+5 V Line
Figure 2-20. RESET Signal Timing
2.3.3 Sensor Circuits
Figure 2-21 shows the sensor circuits in block diagram form. Detection of any excessive printhead
temperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, such as the
signal, pass through the
unit before reaching the CPU. Terminals
to
on the CPU
are used for the A/D convertor.
The
circuit generates the A\D convertor reference voltage
CPU (1 c)
(2A)
P E 2 0 U T
‘
PE1OUT
PE 1
P34
GAPOUT
GAP
GAP
P31
LEVOUT
LEVER
LEVER
P51 —
“
A V P P
VPP
+35 V Line
I
4 . 7 4 1 v
‘
C i r c u i t
Figure 2-21,
Sensor Circuit Block Diagram
2-16
Summary of Contents for LQ-1070+
Page 1: ...EPSON TERMINAL PRINTER LG1 570 lo7cJ L 4000566 REV B ...
Page 111: ...REV A Figure 6 2 LQ 570 Lubrication Points 6 3 ...
Page 112: ...REV B 6 4 ...
Page 125: ...REV B C3 11 C9 I 1 Figure A 10 BOARD ASSY POWER SUPPLY C062 PSB BOARD Component Layout A 1 3 ...
Page 127: ...REV B Zluo Zr Vlr alr Figure A 1 2 BOARD ASSY PANEL C062 PNL BOARD Component Layout A 1 5 ...
Page 128: ...Figure A 1 3 LQ 570 Exploded Diagram A 1 6 ...
Page 129: ...REV B A 1 9 ...
Page 133: ... I C 71 I Ila u 4 l t mm 151 m Figure A 1 8 LQ 107O Case Outline Drawing A 23 ...
Page 135: ...EPSON Printed in Japan 91 09 5 G ...
