LG LX-U250A Service Manual page 27

PLAY MODE CHECK
IC201 46Pin VCC CHECK
YES
IC201 3,6 Pin Signal Output CHECK
YES
Muting SECTION CHECK
REC CHECK (Q202,Q252 ON:R220,270 HIGH)
IC203 2,8Pin INPUT SIGNAL CHECK
YES
IC203 3,7 Pin OUT
YES
IC202 6(12V),4 Pin High check
YES
L201 2,3PIN check
YES
DECK CHANGE
NO
VOLTAGE CHECK LIST
NO
Deck Mecha MOVE CHECK
IC201 CHANGE
NO
Q202,Q252 Base "Low"CHECK
Q202,Q252 CHANGE
NO
IC203 6Pin VCC volt check
NO
Power Check,IC202 Troubleshooting
NO
C227(+)INPUT VOLT CHECK
Q205 Base 0.6V CHECK
Q205 Collector Low
Q204 CHANGE
OK
- 2-20 -
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Deck Mecha CHANGE
IC203 Troubleshooting
VOLTAGE CHECK LIST
IC203 Troubleshooting
Q205 CHANGE
L201 CHANGE