LG 27UL850 Service Manual page 16

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Only for training and service purposes
4. No USB-C
Check input signal format
Is it supported?
Y
Check USB-CCable for
Damage or Open Connector
Y
Check JK801 for proper
connection or Damage
Y
Check AUX Signal
(R876 or R890)
Y
Replace Main Scaler (IC200)
N
Replace Connector
N
ReplaceIC801
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LGE Internal Use Only