Brother CE-5500PRW Service Manual page 167

Failure Investigation
for Electronic Parts
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
5 - 6
Error message is displayed
"F8" is displayed.
Y
Replace the main PCB assy.
"F9" is displayed.
Y
Replace the main PCB assy.
N
Replace the power supply
PCB assy.