Epson LQ-510 Technical Manual page 48

PRINCIPLES OF OPERATION
Thermal Sensor (Printhead Temperature Detection)
The thermal sensor in the printhead monitors the printhead temperature. If the head temperature exceeds
a specified upper limit, printing is automatically suspended. Printing resumes when the temperature drops
to a specified lower value. Figure 2-8 illustrates the printer's thermal-sensor circuit.
Figure 2-7. Thermal Sensor Mechanism (Printhead Temperature Detection)
2-6
C N 8 - 1 6
Thermal
Sensor
in Head
C N 8 - 1 7
Figure 2-8. Thermal Sensor Circuit
P r i n t h e a d
' - T h e r m a l
Sensor
V
AREF
R50
3 . 3 K
10K
0 . 1
AVss
REV.-A
LQ-510