Canon PIXMA MP170 Service Manual page 55

CN302 (Print head 2/2 [Carriage unit])
No.
1 DIA
2, 5, 8, 10,
SGND
12, 14
3 A_HE0
4 A_CNO
6 DATA_EVEN
7 DATA_ODD
9 HCLK
11 ID2
13 TH
15 ENC_OUT1
16 ENC_OUT0
17 ENC_PWR
18 HVDD
19 HLAT
20 B_HE1
CN401 (Power supply)
No.
1 VM
2 PW_CONT
3 GND
CN402 (PictBridge)
No.
1 F-GND
2 S-GND
3 D+
4 D-
5 VBUS
CN403 (USB 2.0)
No.
1 SNS_USB
2 D-
3 D+
4 to 8 GND
Signal name
Signal name
Signal name
Signal name
Function
Diode sensor anode side
Ground
Heat enable
Head contact detection signal (CL)
Even nozzle data
Odd nozzle data
Head clock
Head ID
Thermistor signal
Encoder signal
Encoder signal
Encoder 3.3V
Head logic power upply
Latch signal
Heat enable
Function
24V power supply output
Power control signal
Ground
Function
Frame ground
Signal ground
D+ signal
D- signal
VBUS signal
Function
VBUS power supply detection signal
D- signal
D+ signal
Frame ground
3-4