LG LAC6700R Service Manual page 13

D
"FILE CHECK" display?
YES
Checked the CD DSP ground?
YES
Checked the CD DSP reset?
YES
Checked the CD DSP X-tal?
YES
Checked the CD DSP control?
YES
Checked the USB data?
YES
OK
YES
USB no sound?
YES
Checked the CD DSP
signal out?
YES
OK
LGE Internal Use Only
NO
IC506(26, 31, 57, 60, 79 )
NO
NO
NO
IC506(67, 68, 69, 70, 71, 72, 73)
Fig 10~12
NO
IC511(22, 23) IC510(50, 51)
NO
Fig 8
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2-8
IC506(72)
X503
IC520(1, 2, 3)
Only for training and service purposes