7. LOCATION & SIGNAL ASSIGNMENT
Pin No. Signal name IN/OUT Description
1 HVG ... GND for head drive voltage VH
2 HVG ... GND for head drive voltage VH
3 HT0 IN Driver signal for temperature control heater
4 HT1 IN Driver signal for temperature control heater
5 HVH OUT Head driver voltage
6 HVH OUT Head driver voltage
7 W-HT OUT Drive signal for temperature control heater
8 INKS1 ... Not used
9 TOP IN Detection signal for rank resistance
10 DIODEA OUT Head temperature sensor (diode) anode
11 ID0 IN Cartridge detection and recognition signal
12 ID1 IN Cartridge detection and recognition signal
13 INKS2 IN/OUT Cartridge detection and recognition signal
14 HVss ... Head's logic drive voltage HVdd GND
15 HENB0(Y) OUT Heat enable
16 Even ENB OUT Even nozzle heat enable
17 HENB1(M) OUT Heat enable
18 HENB3(B) OUT Heat enable
19 Odd ENB OUT Odd nozzle heat enable
20 BENB1 OUT Block enable generation signal
21 BENB2 OUT Decoder output signal
22 BENB3 OUT
23 HVdd OUT IC drive voltage (+5 V)
24 HCLK OUT Print data transfer signal
25 HLATCH OUT Timing signal for print data to latch
26 HRES OUT Latch reset signal
27 HENB2(C) OUT
28 HDATA OUT Printing data
29 DIODEK IN Head temperature sensor (diode) cathode
30 HPO IN Home position sense High/ Low(sense)
31 HPG ... Ground
32 HPA OUT Photo LED drive
Figure 5-9 Logic Board
