Philips LX3000D Service Manual page 14

REPAIR INSTRUCTIONS
Repair IC18 power supply
2-8
(b)
L, R, C /CH
No signal output
Check IC18 power supply
No
Pin16(VCC)=+7V
Circuit
Pin7(VEE)=-7V
Yes
See (a)
Repair chart
O
No Sound
Analog No Output
Check MPEG BD CN104
Analog Signal output
Pin4=L/CH Pin5=R/CH
Pin6=LS/CH Pin7=RS/CH
Pin9=C/CH Pin10=SUB/CH
(a)
All Channal
No signal output
Check power supply
The follwing
No
Repair power supply
IC11, IC12, IC13,
Circuit
IC14, IC15, IC16, IC17
Pin8=(+12V) Pin4=(-12V)
Yes
Check analog Signal
Check repair
Yes
C78=L/CH C79=R/CH
Between C78, C79, C80, C81,
C80=LS/CH C81=RS/CH
C82, C83, to CN108 Circuit
Pin82=C/CH C83=SUB/CH
No
Check IC10
No
Repair power supply
Power supply
Circuit
Pin1,8,14,22=(+5V)
Yes
Check IC10 data
1. CCLK/Pin11 from IC2 Pin9
Check repair
No
2. CDIN/Pin12 from IC2 Pin6
Between IC2 to IC6 circuit
3. CS/Pin13 from IC2 Pin5
And IC6 Circuit
4. MCLK/Pin7 from IC6 Pin39
5. SCLK/Pin5 from IC6 Pin40
Yes
Check IC10 data
(Digital signal input)
1. LRCK/Pin6 from IC6 Pin32 No
Check repair
2. SDIN1/Pin2 fronm IC6 Pin33
IC6 Circuit
3. SDIN2/Pin3 from IC6 Pin36
5. SDIN3/Pin4 from IC6 Pin37
Yes
Change IC10
2-8