Connector Locations And Pin Layout; I550 Connector Locations And Pin Layout - Canon i550 Service Manual

2. Connector Locations and Pin Layout

2.1 i550 Connector Location and Pin Layout
2.1.1 Logic board
CN501
CN503
CN502
CN201 (Carriage ribbon cable connector)
Pin No. Signal Name
1 DIODE_GND
2 DIA1
3 DIK0
4 THERMO
5 - 6 HVDD
7 HVSS
8 HVH
9 - 12 HVH
13 - 16 HVH
17 - 21 H_GND
22 - 25 H_GND
CN202 (Carriage ribbon cable connector)
Pin No. Signal Name
1 VSEN_3.3V
2 CR_ENC0
3, 5, 9, 18, 22, 24 L_GND
4 CR_ENC1
6 H_ENB0
7 H_ENB1
8 H_ENB2
10 H_D0
11 H_D1
12 H_D2
13 H_D3
14 H_D4
15 H_D5
16 H_D6
17 H_D7
19 H_EEPROM_DIO
20 H_EEPROM_SK
21 H_EEPROM_CS
23 H_CLK
25 H_LATCH
CN504 CN507
Figure 3-1 Logic Board
Function
BK/COL diode sensor cathode
COL diode sensor anode
BK diode sensor anode
Thermistor signal
3.3V head logic power supply
Logic GND
Head gate power supply
19V head (BK) power supply
19V head (COL) power supply
Head (COL) GND
Head (BK) GND
Function
3.3 V power supply for encoder
Encoder signal phase A
Logic GND
Encoder signal phase B
BK heat enable
COL heat enable
COL heat enable
BK data
BK data
C data
C data
M data
M data
Y data
Y data
Head EEPROM data
Head EEPROM clock
Head EEPROM chip select
Head data transfer clock
Head data latch signal
3 - 3
CN301
CN302
CN505 CN506