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Table 7-4. CN8 - Printhead
Pin Signal Name I/O Function
1 SI6 Out Print data output (6)
2 SI5 Out Print data output (5)
3 SI4 Out Print data output (4)
4 GND --- Ground
5 SCK Out Serial Clock
6 GND --- Ground
7CHOut
Waveform selection signal for MS shot &
Variable shot
8 COC In Color I/C detection signal
9 RXD Out CSIC output
10 COB In Black I/C detection signal
11 TXD In CSIC output
12 VDD3.3 --- Logic power supply (+3.3V)
13 GND --- Ground
14 COM --- Head drive pulse (trapezoid waveform)
15 GND --- Ground
16 COM --- Head drive pulse (trapezoid waveform)
17 GND --- Ground
Table 7-5. CN9 - Printhead
Pin Signal Name I/O Function
1 COM --- Head drive pulse (trapezoid waveform)
2 GND --- Ground
3 COM --- Head drive pulse (trapezoid waveform)
4 GND --- Ground
5 VHV --- +42V power supply for nozzle selector
6 GND --- Ground
7 SEL In Command select
8 GND --- Ground
9 VDD --- Logic power supply (+5V)
10 LAT Out Head data latch pulse output
11 GND --- Ground
12 NCHG Out All nozzle fire selection pulse
13 THM In Thermistor detect signal
14 SI1 Out Printdataoutput(1)
15 SI2 Out Print data output (2)
16 SI3 Out Printdataoutput(3)
17 SP Out select signal for CH signal
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