Buzzer Does Not Sound - Brother CE-5500PRW Service Manual

Failure Investigation
for Electronic Parts
When the power is turned on or the pattern is selected, the

buzzer does not sound.

* In case of the models not equipped with the start/stop
button, the buzzer does not sound.
When the power supply PCB assy.
connector (CN201) is disconnected, is
the voltage between pin 2 and 3, 3
and 4 normal?
• Between pin 2 and 3 : 5V DC
• Between pin 3 and 4 : 30V DC
Is the resistance between pin 1 and
1, 2 and 2, 3 and 3, 4 and 4, 5 and
5 at the power lead wire assy. 1Ω
or less?
5 - 20
Buzzer does not sound
Y
Y
Replace the main PCB assy.
N
Replace the power supply
PCB assy.
N
Replace the power lead wire assy.