LG FA162 - CD Part

3-17
ELECTRICAL TROUBLESHOOTING GUIDE OF CD PART
Turn on CD.
Refer to
SMPS troubleshooting.
Check connector
CN401, CN403.
Check connector
CN401, CN403.
Check audio data (IC400)
Pin35 LRCK, Pin36 BCK,
Pin34 DATA.
Check IC401 (S3053).
Check μ-com interface circuit(CN403)
(CE, BTL-MUTE, CD-IN,
CDOUT, CLK, WRQ, FSEQ)
Check pick-up movement.
Check IC400 (BU9543KV).
Check connector CN403.
OK
Check CN403
Pin3: Open, Pin4: Close.
Check
“READING” display.
DISC reading is OK?
If play,
audio output check.
Check
Open/ Close.
NO
NO
NO
NO
NO
Check voltage
IC401 Pin8, 19: 5 V.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
2. CD PART