Troubleshooting Guide - LG 38UC99 Service Manual

1) MAIN IC : Process display/audio signal/control signal
Location no. : IC200
2) DC-DC Converter : Convert from 19V to proper voltage according to IC spec
Location No. : IC402, IC403, IC404, IC600, IC601, IC901, IC902, IC903, IC904
3) Serial flash memory for Monitor : firmware saving
Location No. : IC202
4) LED driver IC : Supporting proper voltage and current according to BLU spec
Location No. : IC600, IC601
5) Headphone AMP : Amplify audio signal from Main IC and then provide amplifying signal to H/P interface
Location No. : IC503
6) USB-C PD Controller : Set the signal from USB-C input and communicate with Source Device.
Location No. : IC801
7) Mux IC : Separate DP and USB signal of USB-C input, controlled by PD controller.
Location No. : IC800
8) USB Hub IC : function of HUB to the PC, should be connect to the PC with USB-C/C or USB-C/A cable.
Location No. : IC701

TROUBLESHOOTING GUIDE

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