Canon PIXUS 50i Service Manual page 34

J202 (Print head FPC I/F)
No. Signal name
1 TBk Black ink tank presence sensor
2 TGND Ink tank sensor GND
3 TCl Color ink tank presence sensor
4 ChA Carriage encoder phase A
5 Vcc_ENCO Carriage encoder drive power supply
6 ChB Carriage encoder phase B
7 TH Thermistor output
8 Vss Head logic GND
9 Vss Head logic GND
10 Vss Head logic GND
11 Vdd 3.3V head logic drive power supply
12 Vdd 3.3V head logic drive power supply
13 A_DIK Diode sensor 1 cathode
14 A_DIA Diode sensor 1 anode
15 B_DIK Diode sensor 2 cathode
16 B_DIA Diode sensor 2 anode
17 E_DI Head EEPROM data
18 E_DO Head EEPROM data
19 E_CS Head EEPROM chip select
20 E_SK Head EEPROM clock
21 A_DATA_K2 Black data 2
22 CLK Head data transfer clock
23 LT Head data latch
24 A_HE Black heat enable
25 A_DATA_K1 Black data 1
26 B_HE_2 Color heat enable 2
27 B_HE_1 Color heat enable 1
28 B_DATA_M1 M data 1
29 B_DATA_C2 C data 2
30 B_DATA_C1 C data 1
31 B_DATA_Y2 Y data 2
32 B_DATA_M2 M data 2
33 B_DATA_Y1 Y data 1
Function
3 - 3
Input/Output
IN
IN
IN
OUT
IN
IN
OUT
OUT
IN
OUT
IN
OUT
OUT
IN
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT