Print Head (S820) - Canon S520 Service Manual

S900
1.3 Print Head
Pin No. Signal
1,2,8~13 GNDH
19,20
3 DATAK
4 DATALC
5 DATALM
6 DATAC
7 DATAM
14 TSOKLC
15
16 HDSEN
17 HCLK
18 DATAY
21 HELMX
22 HELCX
23 HEKX
24 3.3V
25,36 GND
26 VSS-A
27 VDD-A
28 HEYX
29 HEMX
30 HECX
31~33,39~42
48~50
34 3.3V
35 DHE
37 TSOLMC
38 TSOMY
43 E_CS
44 E_SK
45 E_DI
46 E_DO
47 VHT
50
10
Figure 4-3 Print Head
IN/OUT Function
OUT KDATA
OUT LCDATA
OUT LMDATA
OUT CDATA
OUT MDATA
IN KLC chip temperature status output
BG OUT Synchronized transfer signal
IN Head YES/NO (GND for head)
OUT Head data transfer clock
OUT YDATA
OUT LM driving signal
OUT LC driving signal
OUT K driving signal
Analog GND
OPEN
OUT Y driving signal
OUT M driving signal
OUT C driving signal
VH
OUT Dummy nozzle driving signal
IN LMC chip temperature status output
IN MY chip temperature status output
OUT Head EEPROM chip select
OUT Head EEPROM clock signal
OUT Head EEPROM data signal
IN Head EEPROM data signal
VH short on the logic board
41
1
4-5
Part 4: Appendix