Brother T-8422A Instruction Manual page 54

Problem
13 Machine does not operate
at high speed.
14 Machine stops
sewing.
15 Nothing appears on the
operation panel display.
16 "GREASEUP" flashes on
the operation panel when
the power is turned on.
Is the sewing speed setting or backtack speed setting incorrect?
Use the sewing speed control keys to set the high speed.
during Is the fixed stitch key turned on?
Press the fixed stitch key so that the indicator turns off.
Is the power supply voltage too low?
Check the power supply.
(If the power cord is too long or too many appliances are being
run from a single outlet, this may cause voltage drops which will
in turn cause the reset function to activate and stop the
machine, even if the power supply itself is normal.)
Is the power supply connector
disconnected from the control
box?
Insert
securely.
Is the operation
connector
inside the control
box disconnected?
Insert
securely.
This display is to notify you that it is time to apply grease.
Apply grease.
T-8421A, 8422A, 8452A, 8722A, 8752A
Possible cause
the connector
panel
the connector
11. TROUBLESHOOTING
Page
26
26
*
2952M
13
12*
3154M
40*
48