Tuner Error Correction Flow Chart - LG MAX220UB Service Manual

4. TUNER ERROR CORRECTION FLOW CHART

Something wrong with the Tuner system?
Not available to Tuner?
YES
Checked the
Tuner VDD?
YES
Checked the Tuner
VDD control?
YES
Checked the
Tuner GND?
YES
Checked the E-VR
Mute control?
YES
Checked the
I2C data?
YES
Checked the
Audio signal?
YES
OK
NO
NO
IC801(4, 5), IC401(95), D817
NO
NO
NO
IC101(18, 19), IC401(1, 2)
NO
2-8
IC101(6, 22)
IC101(5, 10, 17, 23)
IC601(15), IC401(98)
IC101(8, 9)