Brother BAS-311E Owner's Manual

BAS-311E.311EL.326E.326EL

#1 The 
power 
lamp does 
not light 
when the 
power is 
turned on.

 Probable causes

1.  With error code [E.12], the 

emergency stop switch is 
activated, or it is defective.

2.

With error code [E.21], the 
machine is malfunctioning.

3.

With error code [E.60], the panel 
circuit board is defective.

4.  With error code [E.61], the 

control circuit board is defective.

5.  With error code [E.90], the power 

supply voltage has sharply 
dropped.

6.  With error code [E.91], the power 

supply voltage has sharply risen.

9.  With error code [E.c2], the 

control box has overheated.

• Clean the air intake of the control box.
• The temperature detector is screwed into the 

heatsink on the control circuit board.  Turn on the 
power after the temperature of the heatsink falls.  
If the error still appears, the control circuit board 
is defective.

• Note: If the machine is operating with the control 

box open, the heatsink will overheat, resultantly, 
error [E.c2] will occur.

Control circuit 
board

8.  With error code [E.c1], the box 

cooling fan (at the left when 
viewed from the front) is 
defective.

• Check whether any thread scraps are not 

entangled in the cooling fan.

• Check that connector P10 (FAN-R) on the control 

circuit board is securely inserted.

Fan motor

 

assembly

7.  With error code [E.c0], the [MT] 

PROM on the control circuit 
board is defective.

10. With error code [E.c3], 

overcurrent has occurred in X-
pulse motor.

Check/repair/adjust

• Check that connector P3 (HEAD) on the control 

circuit board is securely inserted and the 
emergency stop switch is correctly wired.

• Check that grounding is securely made and there 

is no equipment that generates strong electrical 
noise nearby.

• Turn on the power again.  If nothing changes, 

panel PCB is defective.

• Turn on the power again.  If nothing changes, 

control PCB is defective.

• Check that the voltage of a socket is within 

±10% 

of specified voltage.

• Refer to #d1-1, -1, -3

• Refer to #1.1-5

• Refer to #1.1-13

• Check that connector P7 (XPM) on the control 

circuit board is securely inserted and the X-pulse 
motor is securely plugged in.

• Refer to #1.1-2

Parts to be replaced

EM switch 
assembly

Control circuit 
board

Panel circuit 
board

Control circuit 
board

PROM

X pulse motor 
control circuit 
board

Error status