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ASUS
2. Display bad fault
analysis
LCD display data from the CPU output after each EMI device, through the FPC
transmission to the screen. Therefore, for screen display failure, general analysis is
as follows:
1. Check if the LCD connector J1705 welding good dirt phenomenon, to see if there is
any breakage.
The working voltage is
2.
3. Check the LCD control signals' LCM_FMARK ', 'LCM_RSTN' pathways and circuit
device is normal, including LCD_ID is less effective.
4. Check the LCD MIPI signal lines' TCN&P, TDP0 & N0, TDP1 & N1 "EMI Filter device for
welding or performance issues.
2017-06-08
L3 Service Manual
normal. If abnormal, check the welding condition of PMU
ZD553KL
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