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Troubleshooting > Startup System Failure Diagnosis > Flow F: Connector Disconnection Flow > Status Check
Troubleshooting > Startup System Failure Diagnosis > Flow F: Connector Disconnection Flow > Status Check
Flow F: Connector Disconnection Flow
■
Status Check
At the time of startup, the LEDs of Main Controller 1 and 2 turn ON and the Main Controller
Fan rotates, but it stops immediately.
●
Flow for narrowing down troubles
* e.g.
If 12V starts when the DC Controller connector is disconnected
Disconnect the connector of the DC Controller PCB in order and identify the location of failure
Replace the Low-voltage
Power Supply
Flow A:
Execution Flow for Control Panel Startup Failure
Open the front door
Note:
Disable the operation of the host machine
Check whether
the Low-voltage Power
Supply(12V) starts by disconnecting
the connectors of the AC
driver PCB
in order
Yes
No
Check the destination short circuit
of the narrowed-down connectors
(harnesses and PCB)
F-6-136
●
Check item
1. If the problem remains unsolved even after checking the short circuit of the harnesses,
disconnect the following connector one by one and repeat the following procedure to check
whether the symptoms change.
1-a. Open the front door. (Disable the operation of the host machine)
1-b. Check whether the Low-voltage Power Supply(12V) starts by disconnecting the
appropriate connectors of the AC driver PCB.
J114
DC Controller
J115
DC Controller
J117
Feed Driver PCB
J116
Reader/UI/Finisher
1-c. If Low-voltage Power Supply(12V) does not start even if disconnecting and
connecting the connector, replace the Low-voltage Power Supply.
2. Check the destination short circuit of the narrowed-down connectors (harnesses and PCB).
e.g.
If 12V starts when the DC Controller connector is disconnected,
disconnect the connector of the DC Controller PCB in order and identify the problem.
T-6-32
