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Electronic Parts

Failure Investigation

for Electronic Parts

Power does not come on

When the power is turned on, nothing appears on the LCD

and the buzzer does not sound.

In case of models not equipped with the start/stop button.

When the power is turned on, nothing appears on the LCD.

Replace the main PCB assy.

Connect the power supply

cord correctly or replace it.

Replace the inlet assy.

Is the power supply cord free from

damage and connected correctly?

Replace the power supply

PCB assy.

Replace the power lead wire assy.

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?

When the inlet assy. connector is

disconnected from the power supply

PCB assy. and the power is turned

on, is the voltage between pins

120V AC?

When the power lead wire assy. is

disconnected from the power supply

PCB assy. connector (CN201), is

the voltage between pin 2 and 3, 4

and 3 normal?

• Between pin 2 and 3 : 5V DC

• Between pin 4 and 3 : 30V DC

Brother CS5055PRW User Manual

Other manuals for Brother CS5055PRW