Canon i550 Service Manual page 42

JLFENC1 (Paper feed motor/LF encoder connector)
Pin No. Signal Name
1 LFA
2 LFB
3 GND
4 LF_ENCA
5 EVDD
6 LF_ENCB
JUSB2 (USB interface connector)
Pin No. Signal Name
1 USB_VBI
2 USB_DM
3 USB_DP
4 GND
JCRM1 (Carriage motor connector)
Pin No. Signal Name
1 CRA
2 CRB
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2.3.2 Carriage board
JCRB1 (Carriage ribbon cable connector)
See page 3-12 (JCR1 Carriage ribbon cable connector pin description)
JCRB2 (Carriage ribbon cable connector)
See page 3-12 (JCR2 Carriage ribbon cable connector pin description)
JCRB3 (Carriage ribbon cable connector)
See page 3-13 (JCR3 Carriage ribbon cable connector pin description)
JHD1 (Print head contact)
Pin No. Signal Name
1 - 50
Function
LF motor phase A
LF motor phase B
GND
Encoder signal phase A
Sensor power supply
Encoder signal phase B
Function
Cable power supply
Differential data signal
Differential data signal
GND
Function
CR motor phase A
CR motor phase B
JCRB1
41
1
Figure 3-8 Carriage Board
Function
See page 3-15 (Print head pin description)
3 - 14
JCRB2 JCRB3
50
10