PX-045A Printhead
DC Values (prior to printing)
1
2
3 Using as GND reference
4 2.59V DC
5 3.3V DC
6 3.3V DC
7 0V DC
8 0V DC
9 3.3V DC
10 0V
11 NC
12 0V
13 0V
14 0V
15 0V
16 0V
17 0V
18 0V
19
20
21
During print
1
2 0V
3 Using as GND reference
4 Goes to 3.3v sometimes during print for long (100 to 200ms+ periods)
5 3.3V DC
6 3.3V DC
7 0V DC
8 500ns/3.3v ~every 20us
9 3.3V DC
10 500ns/3.3v
11 NC
12 0V (some ripple)
13 ~84ns/3.3v. Looks like data clk.
14 0V
15 84ns/3.3v Looks like data.
16 0V
17 84ns/3.3v Looks like data.
18 0V
19 Looks like 43v (>30v)
20
21 0V
Pin 4 during print:
1,20 Connected
2,3,7,11,12,14,16,18,21 Connected
5,9 Connected (likely 3.3)
Pin 4 seems up be pulled up to 3.3v on controller. (4.7K pullup)
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