Troubleshooting Guide - Brother MD-602 Service Manual

13. Troubleshooting guide

• If there seems to be a malfunction, first check the machine as described below. If the problem remains unresolved,
turn off the power and contact your nearest Brother dealer.
When using a model with the operation panel if an error displays on the operation panel refer to "13.1 Error display
and details".
Problem
1. The motor will not operate even
though the power is on and the
treadle is depressed.
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Where to check (after turning off the power)
(1) The power indicator (green LED) is
not illuminated.
Power indicator
(2) The power indicator (green LED) is
illuminated.
MD-602, 612
Check the main power voltage. (Try
connecting the power cord to a dif-
ferent outlet.)
Check for a blown 8A fuse. FU will
flicker when using the operation
panel. (The control box is defective
so replace it.)
Is the treadle pressed down?
• The treadle must be returned to the
neutral position once after the
power is turned on before opera-
tion can be started.
Turn the machine pulley lightly by
hand. If it is heavy or does not ro-
tate, check the machine or motor.