Canon BJC-55 Service Bulletin page 196

Part 5: Maintenance
The BJ cartridge or the scanner cartridge is recognized by the pin No. of connector
CNH1 on the control board or by a combination of ID1 and ID0 as shown below.
Pin No.
11
12
13
CNLF1 (Paper feed motor connector)
Pin No. Signal name
1
2
3
4
5
CNCR1 (Carriage motor connector)
Pin No. Signal name
1
2
3
4
CNDC1 (DC power connector)
Pin No. Signal name
1
2
3
CNBT1/CNBT2 (Lithium ion battery connector)
Pin No.
CNBT1 1 Lithium ion battery "+" terminal
CNBT1 2 Lithium ion battery "–" terminal
CNBT2 1 Lithium ion battery thermistor terminal
CNBT2 2 Lithium ion battery ON/OFF output control terminal
Signal name Cartridge type
ID0 Low
ID1 Low
HCONT Low (BC-11e), (IS-12) / High (BC-10, BC-11)
IN/OUT Description
COM IN Paper feed motor drive voltage +20.0 VDC
LF B OUT Paper feed motor phase B
LF A OUT Paper feed motor phase A
LF A OUT Paper feed motor phase A
LF B OUT Paper feed motor phase B
IN/OUT Description
CR B OUT Carriage motor phase B
CR B OUT Carriage motor phase B
CR A OUT Carriage motor phase A
CR A OUT Carriage motor phase A
IN/OUT Description
VIN IN +13 VDC
-VIN IN Negative ( - ) side of DC input voltage
GND
Description
High
Black
Low
5-34
Color, scanner
Connector Position
Control board
(Lower section)
Control board
(Upper section)
BJC-50