Brother BE-1201B-AC-PC - Manual (Page 239)

BE-0901E-AC-PC• BE-1201B-AC-PC 12-7
Chapter 12 Troubleshooting
Symptom Measures
Jump solenoid does not operate. • Check to see if connection from the jump solenoid to connector P10 of
the head PCB is proper.
• Check the resistance value of the jump solenoid which does not
operate with the connector section. The normal resistance value is
approximately 185Ω.
→ If it is faulty, replace the solenoid with a new one. In this case, the
head PCB may also be faulty. Also replace the head PCB with a
new one if it does not operate properly even after replacing the
solenoid.
• Replace the head PCB with a new one.
Wiper solenoid does not operate. • Check to see if connection from the wiper solenoid to connector P11 of
the head PCB is proper.
• Check the resistance value of the wiper solenoid which does not
operate with the connector section. The normal resistance value is
approximately 28Ω.
→ If it is faulty, replace the solenoid with a new one. In this case, the
head PCB may also be faulty. Also replace the head PCB with a
new one if it does not operate properly even after replacing the
solenoid.
• Replace the head PCB with a new one.
Pickker solenoid does not operate. • Check to see if connection from the pickker solenoid to connector P8
of the head PCB is proper.
• Check the resistance value of the pickker solenoid which does not
operate with the connector section. The normal resistance value is
approximately 426Ω.
→ If it is faulty, replace the solenoid with a new one. In this case, the
head PCB may also be faulty. Also replace the head PCB with a
new one if it does not operate properly even after replacing the
solenoid.
• Replace the head PCB with a new one.
Thread trimmer solenoid does not
operate. • Check to see if connection from the thread trimmer solenoid to
connector P20 of the main PCB is proper.
• Check the resistance value of the thread trimmer solenoid which does
not operate with the connector section. The normal resistance value is
approximately 27Ω.
→ If it is faulty, replace the solenoid with a new one. In this case, the
main PCB may also be faulty. Also replace the main PCB with a
new one if it does not operate properly even after replacing the
solenoid.
• Replace the main PCB with a new one.
Pressor foot solenoid does not
operate. • Check to see if connection from the pressor foot solenoid to connector
P20 of the main PCB is proper.
• Check the resistance value of the pressor foot solenoid which does not
operate with the connector section. The normal resistance value is
approximately 80Ω.
→ If it is faulty, replace the solenoid with a new one. In this case, the
main PCB may also be faulty. Also replace the mainPCB with a
new one if it does not operate properly even after replacing the
solenoid.
• Replace the main PCB with a new one.