Canon iPF671 Service Manual page 111

J103 (Printhead)
Pin Number Signal name
71 GND
72 H1_CLK
73 /H1_LT
74 H1-B-DATA-2-EV
75 H1-A-DATA-0-OD
76 GND
77 GND
78 GND
J201 (Connect to Carriage PCB J3401)
Pin Number Signal name
1 VHGND
2 VHGND
3 VHGND
4 VHGND
5 VH
6 VH
7 VH
8 VH
9 VH
10 VH
11 VH
12 VH
13 +24V_HV_SW
14 SNS5V
15 GND
16 +3.3V_H1
17 +3.3V_H1
18 VH_SW1_ON
19 21V_H1_VHT
20 +5V_VM_IC
21 GND
22 VHGND
23 VHGND
24 VHGND
25 VHGND
J202 (Linear encoder sensor)
Pin Number Signal name
1 ENCODER_B
2 GND
3 ENCODER_A
4 SNS5V
J501 (Multi sensor)
Pin Number Signal name
1 SNS3.3V
2 GND
3 IO-ASIC_SCL
4 IO-ASIC_SDA
5 GAP_SNS1
6 GAP_SNS2
7 COLOR_SNS
8 EDGE_SNS
9 GND
10 SNS5V
11 THERMISTOR
12 GND
IN/OUT
- GND
OUT Head data clock signal
OUT Head data latch signal
OUT Even head data signal 2(B)
OUT Odd head data signal 0(A)
- GND
- GND
- GND
T-2-24
IN/OUT
- GND
- GND
- GND
- GND
IN Power supply (+21.5V)
IN Power supply (+21.5V)
IN Power supply (+21.5V)
IN Power supply (+21.5V)
IN Power supply (+21.5V)
IN Power supply (+21.5V)
IN Power supply (+21.5V)
IN Power supply (+21.5V)
IN Power supply (+24V)
IN Power supply (+5V)
- GND
IN Power supply (+3.3V)
IN Power supply (+3.3V)
IN VH control signal
IN Power supply (+21V)
IN Power supply (+5V)
- GND
- GND
- GND
- GND
- GND
T-2-25
IN/OUT
IN Carriage encoder output signal B
- GND
IN Carriage encoder output signal A
OUT Power supply (+5V)
T-2-26
IN/OUT
OUT Power supply (+3.3V)
- GND
IN/OUT Head ROM control signal (clock)
IN/OUT Head ROM control signal (data)
IN Multi sensor head height (GAP) detection signal 1
IN Multi sensor head height (GAP) detection signal 2
IN Multi sensor density detection signal
IN Multi sensor paper edge detection signal
- GND
OUT Power supply (+5V)
- N.C
- GND
Function
Function
Function
Function
Chapter 2
2-43