LG LCS500UN, Service Manual

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2-11
5. CDP ERROR CORRECTION FLOW CHART
No Loading?
Something wrong with the CD Player?
OK
YES
CN520(14, 12)
YES
NO
Checked the CD Vdd?
YES
IC501(4, 5, 7, 9, 12, 44, 49, 51, 74, 77, 81,
102, 104, 116, 117)
NO
Checked the CD
DSP Ground?
YES
IC504(7, 8, 20)
NO
Checked the Motor
DRV Vdd?
YES
CN520(19)
NO
Checked the CD
DSP Reset?
YES
X501(4.2336 MHz)
NO
Checked the CD
DSP X-tal?
YES
CN506(2)
NO
Checked the Disc in
load switch?
YES
CN520(21, 23)
NO
Checked the Loading
Motor Control?
YES
CN506(1)
NO
Checked the 12/8 cm
sense switch?
Fig 1, 2
Fig 3, 4
Fig 1, 2
5A 5B 5C