LG MAX221UB Service Manual

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

LG MAX221UB Specifications

General

Brand	LG
Model	MAX221UB
Category	Receiver
Language	English