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Only training and service purposes
Yes
Yes
Yes
No
No
No
No
Failures and measures
3-2. No light in the Display PCB
Check the
harness.
Check if the
Display PCBA
is faulty.
Check if the
Main PCBA is
faulty.
Is the harness between Main and
Display connected correctly?
(Disconnection/Connector is not fully
inserted)
Replace the harness
(EAD65906902,
EAD65896501).
Replace the Display
PCBA(EBR32115302)
Is 5V applied between No. 1 pin and
No. 6 pin of the Display PCBA
CN39?
Do Display LEDs light right after
the power cord is inserted?
Check if the voltage between No. 2 pin (5V) and
No. 12 pin (GND) of the Main PCBA CN30 is 5V
Check if the voltage
between No. 1 pin (RD)
and No. 6 pin (BL) is 5V.
Is there a 5V output between
Main PCBA CN30 No. 2 and No.
15?
Check Point
Checkpoints
Measures
<Connector
connected to the
Main PCBA CN30>
<Intermediate
Connector>
<Connector connected
to the Display CN39>
Check “4-3 Display
PCBA touch failure”.
Replace the Main
PCBA(EBR33171201)
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