Connector Location And Pin Layout; Main Board - Canon PIXMA MP170 Service Manual

2. CONNECTOR LOCATION AND PIN LAYOUT

2-1. Main Board

CN101 (Remote debugger)
No.
1 TXD
2 RXD
3 GND
4 +3.3V
CN301 (Print head 1/2 [Carriage unit])
No.
1 to 3, 14 to
VHGND
16
4 to 8 VH
9 DIA
10 B_CNO
11 DATA (C)
12 DATA (M)
13 DATA (Y)
17 SGND
18 B_HE2
19 Not used
20 Not used
Signal name
Signal name
Function
Transmit data signal
Receive data signal
Ground
Power supply
Function
Head drive ground
Head drive 24V
Diode sensor anode side
Head contact detection signal (BK)
Cyan seiral data
Magenta serial data
Yellow serial data
Ground
Heat enable
Not used
Not used
3-3