<Cause>
Overheating of carriage motor driver (IC13)
<Suspected parts>
Carriage motor driver (IC13), logic board,
carriage motor
<Measure>
<Cause>
Overheating of paper feed motor driver (IC14)
<Suspected parts>
Paper feed motor driver (IC14),
logic board, paper feed motor
<Measure>
Part 5: Maintenance
BJC-7100
5-22
10. CR Motor Error
Beeper: 8 times
ERROR indicator: Blinks 12 times
11. LF Motor Error
Beeper: 8 times
ERROR indicator: Blinks 13 times
Check carriage motor.
OK?
Replace logic board.
No
Yes
Replace carriage motor.
Measuring point
Normal value
Approx. 8.3
Ω
CNCR
1-4
2-3
• Faulty motor driver IC
• Faulty MPU
• Faulty PCB
soldering/conductivity
1
4
Red
1
2
3
4
A
B
B
A
Approx.
8.3
Ω
/phase
Carriage motor
Blue
Orange
Yellow
Check paper feed motor.
OK?
No
Yes
Replace paper feed motor.
Measuring point
Normal value
Approx. 6.0
Ω
CNLF
1-4
2-3
Replace logic board.
• Faulty motor driver IC
• Faulty MPU
• Faulty PCB
soldering/conductivity
1
4
Red
1
2
3
4
A
B
B
A
Approx.
6.0
Ω
/phase
Paper feed motor
Black
Brown
Orange
Содержание BJC-7100
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