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9.
If printing sound, for example sticking sound, occured, please review and adjust the paper feed
mechanism and the electrical pulse to avoid these kind of mechanical resonance.
10.
Please pay attention that the paper used does not include bad factor to affect printhead life.
11.
The print density variation may become larger if the number of dots energized at same time becomes
greater than 100.
In order to avoid surge, a 47 μF capacitor is required between VH and GND at controller board
12.
side. 0.1 μF ceramic capacitor should be placed between VDD and GND.
2.3 BLOCK DIAGRAM OF THE ELECTRICAL CIRCUIT
8, 9, 10, 24, 25, 26
VH
7, 12, 13, 14, 19, 20, 21
GND
18
STB2
15
STB1
LAT
11
23
DI
22
CLK
17
VDD
16
TM
MT002
DOT #384
6
5
LATCH REGISTER
SHIFT REGISTER
THERMISTOR
2-2
2. PRINT HEAD
4
3
2
S
T
B
N
. o
D
t o
N
. o
1
1
~
1
9
2
2
1
9
3
~
3
8
4
(Fig.2.1)
DOT #1
1
(Tab.2.2)
D
o
s t
S /
T
B
1
9
2
1
9
2
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