LG MAX221UB Service Manual

2-5
Hearing the Pop Noise?
OK
YES
IC401(87, 96, 98), IC601(15), IC804(22),
Q601, Q602, Q603, Q604, Q607
NO
Checked the
Mute contorl?
YES
2A
No Sound External AMP?
OK
YES
IC601(18, 19, 20, 21, 22, 23)
NO
Checked the
Line Out signal?
YES
Q601, Q602, Q603, Q604, Q607
NO
Checked the Line Out
AMP Mute control?
YES
JK601
NO
Checked the Line Out
AMP signal in/out?
YES
2B
No output Beep sound?
OK
YES
YES
IC401(30), IC601(14)
NO
Checked the
Beep control?
2C
[OPTIONAL]

LG MAX221UB Specifications

General

Brand	LG
Model	MAX221UB
Category	Receiver
Language	English