LG MICRO Hi-Fi SYSTEM - Page 20

3-7
NO
NO
NO
Check
output of IC100
LC87F5NC8A
87→PWM_CLK
86→PWM_DATA
34→PWM_REST
YES
YES
YES
YES
Check IC604
PS9831 data input
78 PIN→DATA
79 PIN→CLK
96 PIN→REST
Check
PWM modulator output
FL:75(+)74(-)
FR:71(+)70(-)
OK
Replace the related part
NO
Check
resistance output of line
DATA:R103
CLK:R141
RST:R152
Refer to DVD troubleshooting
NO
Check DVD
ASS`Y PS9831
communication condition
(P7403)
YES
OK
Check IC604 PS9831 part
Check resistance
output of each line
NO
Check IC604
PS9831 data input
OK
YES
YES
YES
Check IC604 PS9831
86pin CLK input
Replace the related part
NO
Check R666(1M) output
YES
OK
NO