and
SQA-V
Service Manual Dec_2019
44
The main switch is ON, but the
power indicator does not light up
and the fan is not working
Check the fuses
(see p.16)
Burnt fuses
Burnt fuses
Burnt fuses
Burnt fuses
Replace the fuses
(see p.16)
Fuses are OK
Fuses are OK
Fuses are OK
Fuses are OK
Problem was
solved?
Yes
Yes
Yes
Yes
End of
troubleshooting
Not
Not
Not
Not
Voltage is OK?
Check the input
voltage of PSU
(see p.16)
Not OK
Not OK
Not OK
Not OK
Replace the
power inlet
(see p.19)
OK
OK
OK
OK
Check the output
voltage of PSU
(see p.17)
Voltage is OK?
Not OK
Not OK
Not OK
Not OK
OK
OK
OK
OK
Replace the
PSU
(see p.17)
Contact MES
support
services
End of
troubleshooting
Problem was
solved?
Yes
Yes
Yes
Yes
Not
Not
Not
Not
Contact MES
support
services
Appendix 4:
Power Supply Troubleshooting Flowchart
