Canon BJC-55 Service Bulletin page 178

Part 5: Maintenance
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page
Check the BJ head
temperature sensor
resistance.
Correct?
Yes
Check the carriage
ribbon cable.
Correct?
Yes
Replace the control
board.
DiA
10
Meter connection
10
Pin No.
29
Figure 5-5 BJ Head Temperature Sensor
No
Replace the BJ cartridge.
• Check the conductivity of Pins 10, 29 and 11.
29
1
Figure 5-6 Carriage Ribbon Cable
No
Replace the print unit.
DiK
Reading
_
+
29
Conductivity
No conductivity
10
•
The carriage ribbon cable is
defective.
5-16
The black BJ cartridge
and the color BJ
cartridge have the
same meter
connections and meter
readings.
28 29
24 25 26
23 22 21 20
27
16 17 18 19
15
14 13 12 11
3
7 8 9 10
5 6 4
1 2
BJC-50