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Step Procedure Condition Solution/Step
1 Check for an obstruction
blocking movement of the
needlecase assembly
Obstruction found Clear it
No problems Go to Step 2
2
Check for binding on the color
change spindle
Bind found Lubricate the color change
spindle
No bind found Go to Step 3
3 Turn the machine off and turn
it back on again. Reboot the
computer and reload the Bravo
OS.
Color change works Probably corruption of data in
the RAM
Color change fails Go to Step 4
4 Conduct an optical sensor test
on both the needlecase sensor
(installed in the needlecase)
and the color change home
sensor (installed in the lower
arm between the reciprocator
and presser foot shafts).
Either sensor bad Replace optical switch
assembly
Both sensors good Go to Step 5
5 Measure the resistance of the
stepper motor (Measure the
resistance between the phase
wires. Disregard the ground
(green) wires.)
Resistance < than 7 ohms Short in the stepper motor,
replace it.
Resistance > 10 ohms Open in the stepper motor,
replace it.
Resistance between 7 and 10
ohms
Go to Step 6
6 Above steps failed to nd
problem.
Contact Technical Support for
assistance.
LED Cluster Assembly Failures
Condition Solution
Both LED Cluster Assemblies do not illuminate with
the rest of machine having power.
Troubleshoot the wiring connecting the Main PCB
to the LED Cluster assemblies.
One LED Cluster assembly is completely illuminated
but the other one is not.
Verify the harness connection rst. Then replace
the non-functional LED cluster assembly.
Individual LEDs on either LED Cluster Assembly are
burned out or fail to illuminate.
Replace the LED Cluster assembly affected.
Machine Initialization Failure
This section assumes that you have the power switch turned on and that the power supply is functioning.
(Check for a green LED that should be illuminated on the side of the power supply unit.)
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