LG MDT505 - iPod and Tuner Function Troubleshooting

3-6
ELECTRICAL TROUBLESHOOTING GUIDE
NO
IPOD function.
Check IPOD
connection or CN201.
IPOD B/D
CN201 Pin27,
28 audio L/R
ok?
NO
NO
NO
Check IPOD Board.
Check 15p Harness
and connection.
Check IC251.
IPOD B/D
CN202 Pin13, 15
ok?
MAIN B/D
PN201 Pin13, 15
ok?
IC200
Pin26, 27 audio
signal ok?
YES
YES
YES
YES
YES
B
NO
NO
NO
NO
NO
NO
TUNER Function.
Check Tuner (TU345)
and Antenna
connection.
Check IC200.
Check IC500.
Check IC602.
Check IC500 and
X500.
Check IC701.
Check AMP IC output
stage and JK701(JK702).
IC200
Pin23,24 audio
L/R ok?
IC200
Pin41 I2S output
signal ok?
IC602,
Pin4~8 I2S
input signal
ok?
IC602
I2S output signal
ok?
IC200
Pin42, 43, 44 I2S
clock ok?
IC701 audio
output signal
ok?
YES
YES
YES
YES
YES
YES
YES
B
A