Canon i550 Service Manual page 41

JCR3 (Carriage ribbon cable connector)
Pin No. Signal Name
1 - 8 VH
9 HEYX
10 HELMX
11 HEMX
12 DATAM
13 TSOLMN
14 - 20 GND
JPOW1 (DC power supply connector)
Pin No. Signal Name
1, 2 VH
3 VM
4, 5 GND
6 5V
7 GND
8 VHREM
9 VMREM
JPGS1 (Purge sensor connector)
Pin No. Signal Name
1 POW
2 GND
3 SNS_PG
JINK1 (Ink sensor connector)
Pin No. Signal Name
1 POW
2 GND
3 AD_INK
JASFM1 (ASF motor connector)
Pin No. Signal Name
1 ASFA
2 ASFB
3 ASFA
4 ASFB
JPGM1 (Purge motor connector)
Pin No. Signal Name
1 PGA
2 PGB
3 PGA
4 PGB
JASFS1 (ASF sensor connector)
Pin No. Signal Name
1 POW
2 GND
3 SNS_ASF
Function
Y heat enable
LM heat enable
M heat enable
M data
LM, M status output
GND
Function
GND
VH output enable
VM output enable
Function
Power supply
GND
PG sensor output
Function
Power supply
GND
Remaining ink sensor output
Function
ASF motor phase A
ASF motor phase B
ASF motor phase A
ASF motor phase B
Function
PG motor phase A
PG motor phase B
PG motor phase A
PG motor phase B
Function
Power supply
GND
ASF sensor output
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