Bedienungsanleitung Brother BE-1206B-BC Stand-Alone type (Seite 178 von 186) (Englisch)

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10-6 BE-1204B-BC • BE-1206B-BC

Chapter 10 Troubleshooting

Symptom Measures

ERROR A8 frequently occurs. • In the encoder signal test mode, manually turn the main shaft pulley

and check to see that the stop position signal is correct.

→ If the signal does not change, refer to the cable connection block

diagram and check to see if connection from the stop position

sensor to the power supply PCB is proper.

Thread trimming motor home position

error occurs.

• Is lint clogged between the travelling blades?

→ Remove it.

• Is the thread trimming motor operating?

→ If so, refer to the block diagram showing the cable connections and

check to see if connection from the thread breakage sensor to the

main PCB is proper. Also adjust the thread breakage sensor PCB.

(Refer to "Replacing thread breakage sensor PCB.)

• If it is not operating, refer to the block diagram showing the cable

connections and check to see if connection from the thread trimming

motor to the main PCB is proper.

• Check to see if connection from connector P3 of the main PCB to

connector P9 of the power supply PCB in the control box is proper.

• Check fuse F6 on the power supply PCB in the control box.

→ If it is blown, replace it with a new one. If it is blown again, replace

the power supply PCB.

Power frequency error occurs. • Check whether the connector P2 of the power supply PCB is fallen out.

Wiper out error occurs. • Does the wiper on the error head remain projected?

→ If the wiper is tangled with a thread, remove it. If the wiper does

not return smoothly, adjust it.

• Enter the solenoid test mode and operate the wiper motor. Check the

icon on the panel.

→ If the icon is not reversed white, check to see if connection from the

wiper sensor to the head PCB is proper. Replace the wiper sensor

with a new one. Replace the head PCB with a new one.

ERROR C7 occurs. • Turn the power off once and on again. If the same error occurs again,

replace the main PCB with a new one.

Main shaft rotation speed error

occurs.

• Enter the encoder signal test mode and manually turn the main shaft

pulley.

→ If it is abnormally heavy, the main shaft mechanism is faulty.

• Refer to the block diagram showing the cable connections and check

to see if connection from the main shaft motor to the drive PCB is

proper.

Cooling fan motor stops.

Exhaust fan motor stops.

When all three fans in the control box

stop

• Refer to the block diagram showing the cable connections and check

to see if connection from connector P4 of the power PCB in the control

box to connector P3 and P4 of the drive PCB .

• Check fuse in the fuse holder at the side of the control box.

→ If it is blown, replace it with a new one.

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Brother BE-1206B-BC Stand-Alone type Seite 178

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