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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
Flow E:
From 12V Power Supply System Flow
Open the front door
Note:
Disable the operation of the host machine
Check whether
the 12V Power Supply starts
by disconnecting the connectors of the
Relay PCB in order
Yes
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 location of failure
Replace the 12V Power Supply
No
F-6-148
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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 12V Power Supply starts by disconnecting the appropriate
connectors of the Relay PCB.
J422
DC Controller
J423
HansoDriver PCB
J424
DrumDriver PCB
J425
High voltage PCB
J426
Reader ADF Unit
J427
UI, USB Device Port
1-c. If 12V Power Supply does not start even if disconnecting and connecting the
connector, replace the 12V 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-6-30