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Troubleshooting > Startup System Failure Diagnosis > Flow E: Low-voltage Power Supply (12V) System Flow > Flow for narrowing down troubles
Troubleshooting > Startup System Failure Diagnosis > Flow E: Low-voltage Power Supply (12V) System Flow > Flow for narrowing down troubles
Flow E: Low-voltage Power Supply (12V) System Flow
■
Status Check
If 12V is not output to the orange and blue Lead Wires of the Low-voltage Power Supply(12V)
Connector, identify the location of the failure according to the flow.
■
Flow for narrowing down troubles
Description
To check the output of the Low-voltage Power Supply(12V), check the following two points.
• Check the output from the Low-voltage Power Supply(12V)
• Check the output from the AC driver PCB
●
Low-voltage Power Supply(12V) Flow
12V is not supplied to the Main Controllers.
- Check the connection of the AC driver PCB connectors.
- Disconnect and then connect all the connectors, and restart.
Is there output of 12V
to the PCB side of J113 (pin 3) of
the AC driver PCB?
Yes
No
(1)
Yes
No
Is there input of 12V
to the PCB side of J110 (pin 3) of
the AC driver PCB?
- Failure of the AC driver PCB
Yes
No
Is there output of 12V
to the PCB side of J11 (pin 3) of the
Low-voltage Power
Supply PCB?
Is there input of AC
power(e.g.115 V - 230 V) to the PCB side
of J1 (pins 1 and 3) of the Low-voltage
Power Supply PCB?
- Failure of the Low-voltage Power Supply
No
Yes
Is there output of AC
power(e.g.115 V - 230 V) to the PCB side
of J102 (pins 4 and 5) of the
AC driver PCB?
No
Yes
Is there input of AC
power(e.g.115 V - 230 V) to the PCB
side of J101 (pin 1) of the
AC driver PCB?
No
Yes
No
Yes
Is there input of
power-on signal to the pins 3
and 4 of J1010 on the AC
driver PCB?
No
Is the harness
between J102 of the AC driver
PCB and J1 of the Low-voltage Power
Supply PCB disconnected
/shorted?
- Replace
the
host machine
Yes
- Failure of harness (disconnection) between J113 of the
AC driver PCB and J4 of the Main Controller 2
- Failure of the Main Controller 2, Main Controller 1
- Failure of harness (disconnection) between J110 of the AC
driver PCB and J11 of the Low-voltage Power Supply PCB
- Failure of the Low-voltage Power Supply
- Failure of harness (disconnection) between J102 of the AC
driver PCB and J1 of the Low-voltage Power Supply PCB
- Failure of the Low-voltage Power Supply
- Failure of Power Supply
Cord Base
- Failure of the
AC driver PCB
No
Yes
Is there output of
power-on signal to the pins 4
and 5 of J16 on the Main
Controller 2?
- Failure of harness
(disconnection) between J1010
of the AC driver PCB
and J16 of the Main Controller 2
- Failure of the AC driver PCB
- Failure of the
Main Controller 2
(4)
(2)
(3)
(5)
(6)
(7)
(8)
(9)
(10)
F-6-135