Service Manual
18
Printhead signals
Attention:
Unplug the printer!
Only experienced staff is allowed to open the printer and to proceed measuring.
Measuring point
Description
Correct value
Notes
ST22 PIN5
DATAIN
ST22 PIN7
CLOCK
ST22 PIN9
/LATCH
ST22 PIN11
B.E.O.
ST22 PIN12-13
STR1-2
ST22 PIN14-18
/CONT1-5
ST22 PIN20
THERM
23°C ≈ 2,5V
the higher the voltage,
the higher the
temperature
ST22 PIN3, 4, 6, 8,
10, 19
GND
ST22 PIN1, 2
5V
Schematic drawing of printhead signals
Summary of Contents for Vario II series
Page 2: ......
Page 6: ......
Page 7: ...Service Manual 1 WIRING PLANS Electronics ...
Page 8: ...Service Manual 2 CPU Plan of components ...
Page 11: ...Service Manual 5 MEMORY CARD SLOT Option Plan of components ...
Page 13: ...Service Manual 7 INPUT OUTPUT PLATE OPTION Plan of components ...
Page 54: ......
Page 60: ......