Display Error Correction Flow Chart - LG LAC2900N Service Manual

3. DISPLAY ERROR CORRECTION FLOW CHART

Something wrong with the Display?
No Display or Some Display is broken?
YES
Checked the LCD
Driver Vdd?
YES
Checked the LCD
Driver Ground?
YES
Checked the LCD
Driver RESET?
YES
Checked the LCD
Driver OSC?
YES
Checked the LCD
Driver data interface?
YES
Checked the LCD to
LCD Driver line?
YES
OK
3A 3B
NO
NO
NO
NO
NO
IC402(44), CN902(7), IC901(64)
NO
IC901(1~55), LCD, Check the short
2-6
3C
IC901(56)
IC901(60)
IC901(57), IC402(79)
IC901(61)