I950 Connector Locations And Pin Layout - Canon i550 Service Manual

2.3 i950 Connector Location and Pin Layout
2.3.1 Logic board
JPOW1
JPGM1
JASFM1
JASFS1
JCR1 (Carriage ribbon cable connector)
Pin No. Signal Name
1 AD_TH
2 CRENCA
3 EVDD
4 CRENCB
5 GND
6 SE_CDREF
7 GND
8 HCLK
9 GND
10 DATAK
11 DHE
12 HEEP_SK
13 BG
14 DATALC
15 HEEP_CS
16 TSOCLC
17 HECX
18 DATAC
19 HELCX
20 HEKX
JCR2 (Carriage ribbon cable connector)
Pin No. Signal Name
1 - 6 GND
7 DATALM
8 TSOKY
9 DATAY
10 HDSEN
11 HEEP_DI
12 - 14 HVDD
15 - 20 VH
JPGS1 JCRM
Figure 3-7 Logic Board
Function
Not used
Encoder signal phase A
Sensor power supply
Encoder signal phase B
GND
CDR sensor signal
GND
Head transfer clock
GND
K data
Dummy heater enable
Head EEPROM clock
Transfer clock clutch signal
LC data
Head EEPROM chip select
C, LC status output
C heat enable
C data
LC heat enable
K heat enable
Function
GND
LM data
K, Y status output
Y data
Head sensor signal
Head EEPROM data
Head power supply
3 - 12
JUSB1
JUSB2
JINK1
JLFENC1