System Part Circuit - LG LRM-519 Service Manual

2. SYSTEM PART CIRCUIT

Power Cable
Connection Power on
YES
NO
"LG logo" display
on Monitor OK
YES
system function
OK
NO
LED801 "ON" OK
YES
NO
C919 +1.25V OK
YES
NO
C930 +1.15V OK
YES
NO
X100 32.768KHz
OK
YES
NO
IC301(49-pin)
133MHz OK
YES
NO
IC301(10-pin)
33MHz OK
YES
3-3
Check soldering
state of Board
NO
IC900 (1-Pin) +12V
OK
YES
IC900 change
NO
Q909 (2-Pin)
Low=0V OK
YES
IC902 change
X100 change
NO
X300 14.318MHz
OK
YES
IC301 change
NO
IC301 (24-Pin)
66MHz OK
YES
IC301 change
J900 Connector
Power Cable Check
IC914 change
X300 change
R179,C210
Resoldeing