November, 99
All Rights Reserved
27
B-443 Bar Code Printer
Service Manual
3.12 Cutter Drive Circuit
Q6
TIF32C
R54
68
R55
390
+24V
D5
IN4002
CTSENS
R23
10K
+5V
A
9
B
10
CLR
11
Q
12
Q
5
Cext
6
RCext
7
U12B
74HC123
R40
150K
/RESET
+5V
1
16
9
GND
8
U20A
2003
2
15
9
GND
8
U20B
2003
3
14
9
GND
8
U20C
2003
4
13
9
GND
8
U20D
2003
C30
10u\TANT
1
2
3
4
5
6
7
JP3
CUTTER&PEEL
PEEL
+5V
D16
DSP
D17
DSP
CUTTER
Fig. 3.13 Cutter Drive Circuit
This is the cutter drive circuit. The RESET signal is 1 when the printer is turned on. CUTTER
controls the activation of the cutter. The cutter is activated when CUTTER signal is “ low” . The
sensor of cutter sends the “ Hi-Low” signal to MCU through CTSENS pin that detects the action
of cutter.
Содержание B-443
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