Testmodes and Troubleshooting
Monitoring of Thermo-ASIC and Printhead
4-23
Needle counter
For every needle there are two 16-bit counters (normal counter and backup counter),
which are incremented alternatively every 40000 needle firings. If a counter has rea-
ched the value of 32000, it will no longer be increased, because in this case the ma-
ximum number of write cycles for the Eeprom has been reached.
Status printout of the printhead chip
By pressing the keys "Online" + "Setup" during power on you can print out the con-
tents of the printhead chip. The first two values of one line are the coil parameters in
mV and m? as before. If a parameter is out of tolerance (17.3 ± 20%), then it is mar-
ked as invalid with an asterisk ("*") after “m
Ω
” and the display will show "THS
ERROR". The parameters named "Dot" and "Edot" are the two needle counters (one
increment = 40000 needle firings), "Stat" identifies the status of the counter. "Stat"
has the following meaning:
S
tat Value
Meanin
g
0
b
oth co
u
nter
s
ok
1
co
u
nter 1 wrong
2
co
u
nter 2 wrong
3
f
a
il
u
re,
b
oth co
u
nter
s
wrong, co
u
nter no longer
us
ed
Serial Printhead
Calibration Temp
Head Type
Содержание 2365
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Страница 162: ...PMS Double Sensor Spare Parts and Schematics 7 22 7 8 PMS Double Sensor T R T R T Transmit R Receive...
Страница 164: ...Option Recognition Spare Parts and Schematics 7 24 7 10 Option Recognition...
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