LG MCV903 - Pwm Modulation Part Check

3-14
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Only for training and service purposes
LGE Internal Use Only
14. PWM MODULATION PART CHECK II
LRCK
BCK
DA_DATA
LRCK
BCK
DA_DATA
YES
PWM MODULATION
PART CHECK II
Replace the
related part
NO
Check the
assembly and contact
of the CD Ass`y and
MAIN Ass`y
communication
FFC WIRE
NO
YES
OK
See the CD Ass`y
Troubleshooting
YES
NO
IC604
PS9830
19 PIN_BCK(R653→100 Ω)
20 PIN_LRCK(R654→100 Ω)
23 PIN_SS0IND(R655→100 Ω)
Check the waveform
at botht il
NO
YES
OK
Replace the related
part
IC604
PS9830
19 PIN_BCK 20 PIN_LRCK
23 PIN SS0IND input
20 PIN_LRCK
23 PIN_SS0IND input
waveform check
YES
Check the
CD Ass`y communica-
tion condition P7403
8_ LRCK 9_ BCK 10_
DA-DATA
YES