Error Display And Details - Brother MD-602 Service Manual

13.1 Error display and details

If an error occurs, an error code, etc., will display on the counter section of the operation panel.
If the error display flickers, check the contents, turn the power switch OFF and remove the cause. Then, turn the power ON
again.
Display
Control box overheating,
Pt
overcurrent, momentary failure of
power supply
ou
Power voltage too high
oL
Load is too large
Motor or machine lock, synchronizer
Lo
fault
8A fuse for solenoid blown
FU
Transformer error
Momentary drop or failure of power
Pd
supply
Operation panel switch error (switch
E0
is always on)
E1
Operation panel connection error
PU
Pulley setting and actual pulley differ.
ot
Time overrun
Control circuit board memory
All displays flash.
element is faulty.
30
Details
Is the load abnormally high?
Check the power voltage.
The momentary power voltage may increase when
the factory's breaker trips, etc.
This error may occur during deceleration if the load
inertia is too large.
Lightly rotate the machine pulley by hand and confirm
that it turns. Check the details for the synchronizer in
section 4 of the troubleshooting section.
Open the cover, and check the 8A fuse on the circuit
board.
Check the power voltage.
If the wiring is too long or if it is branched, the
voltage may drop momentarily during starting.
Replace the operation panel.
Check the operation panel connectors for
disconnections or looseness. The operation panel
may be faulty.
Set the DIP switches according to the machine head
and pulley being used. (Refer to "7.5.2 Other DIP
switch functions".)
If the sewing machine has been running continuously
for 3 minutes, it is stopped as a safety measure.
Replace the control box or control circuit board.
MD-602, 612
Where to check (after turning off the power)