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KX-F910BX
CIRCUIT OPERATION
Circuit Diagram
Timing Chart
3-4. SUPERVISION CIRCUIT FOR THERMAL HEAD TEMPERATURE
(1) Function
Thermal head temperature is disposed to convert voltage to digital data by using A/D converter of IC1. The CPU decides
the strobe width of the thermal head according to this value. Therefore, this circuit can keep the thermal head at an even
temperature in order to stabilize the printing density and prevent the head from being overheated.
A
A
B
C
B
C
28
27
26
25
22
24
23
49
38
STB1
STB2
STB3
STB4
THDAT
THCLK
THLAT
ADSEL1
AIN2
IC1
C39
C38
R49
R48
R47
C37
TH-
HEAD
5V
0V
0V
Effective signal
ref LEVEL CLAMP
1.5V
IC1 internal bias
CLAMP
Содержание KX-F910BX
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