LG CMS1530F - Maintenance and Disc Care; Unit Handling and Cleaning Procedures; Disc Handling, Storage, and Cleaning

3. AUDIO ABNORMAL IN FUNCTION MODE
AUX abnormal
Tuner abnormal
Check L403, L404,
R414, R415, R416, R417, C424, C425 normal?
Check the signal input CON107 pin6, 8.
Normal.
Normal.OK
Check the VCC power circuit.
Check the signal input of IC703 pin5, 6.
YES
YES
NO
NO
YES
NO
YES
Check the signal output
of TU401 pin1, 2.
Check the signal input circuit (R717, R760, R768,
R769, C707, C710, C711, C719, C724, C907).
Check TU400
pin4 “TU_CK”, pin5 “TU_DA”, pin7 “TU_RST”.
NO
YES
NO
NO
YES
Check the signal input
of IC703 pin7, 8.
Check TU401 VCC normal?
3-5
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