Philips LX-3000D, Service Manual

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Audio output
No Sound
C
All channel no oosund
IC501/IC502/IC503
RE-Insert and fix
the cable
Yes
Repair chart
Check IC405,IC406 Check IC405,IC406
No
At DVD AC3 Dolbly Digital Mode At DVD AC3 Dolbly Digital Mode
IC405 Pin13=D/L IC405 Pin13=D/L Pin1=D/R
Pin1=D/R
Audio Signal input Audio Signal input
Pin3=D/C Pin3=D/C
No
See (D)
Repair chart
No
Pin2=L/CH Pin2=L/CH
Check surround BD CN601 Check surround BD CN601
Pin3=R/CH Pin3=R/CH
No
Check Ic401
Audio signal output Audio signal output
Yes
Yes
Pin13 to C412 = L/Ch Pin13 to C412 = L/Ch
Pin3 to C416 = R/CH
Pin3 to C416 = R/CH
Audio Signal input Audio Signal input
Check Ic405 Ic406
Between Ic405.406 Pin9.10.11 Between Ic405.406 Pin9.10.11
To Ic408 Pin2 Circuit or
Check IC405. IC406
Pin16(VCC)=+7V
Power Supply
PIN7(VEE)=-7v
Repair IC405,IC406
Power supply Circuit
Yes
Repair
IC408 Circuit
Change IC405 , IC406
Yes Yes
No No
Check Surround BD
Power Suply:
Pin13=(+12V) Pin14=(-12V)
Repair power Supply circuit
No
CN601
DVD audio
No output
Aux/TV/Tuner
No output
See (D)
Repair chart
See (E) and (F)
Check all cable is loose
or bad INT
Change fuse
F901 orF902
Bad
Check fuse F901/F902
Bad Cause Damage
No
OK
Check Amplifier
Change D901
No
Power supply
Pin1=-Vss(-17.5V to -20V)
Pin3=+Vcc(+17.5V to +20V) Pin3=+Vcc(+17.5V to +20V)
Yes
IC501 or IC502 or IC503
Change Amplifier IC
Yes
Audio signal input
IC501 Pin7 from C473(L-CH) IC501 Pin7 from C473(L-CH)
Check IC501/IC502/IC503
IC501 Pin11 from C478(R-CH) IC501 Pin11 from C478(R-CH)
IC502 Pin11 from C491(C-CH)
IC502 Pin11 from C491(C-CH)
IC503 Pin7 from C483(SL-CH)
IC503 Pin7 from C483(SL-CH)
IC503 Pin11 from C487(SR-CH)
IC503 Pin11 from C487(SR-CH)
Audio signal output Audio signal output
Pin31 to C471(L-CH) Pin31 to C471(L-CH)
Check IC408
Pin32 to C476(R-CH) Pin32 to C476(R-CH)
Pin33 to C489(C-CH)
Pin33 to C489(C-CH)
Pin34 to C481(SL-CH)
Pin34 to C481(SL-CH)
Pin35 to C485(SR-CH)
Pin35 to C485(SR-CH)
No
Power supply
Check IC409 IC410 IC411
Yes
Pin4=(-12V) Pin4=(-12V)
Pin8=(+12V)
Pin8=(+12V)
R4105 or R4106
No
Check IC409 IC410 IC411
Bad Cause Damage
Yes
No
Check system power supply
No
IC901 Pin3=(-12V)
IC902 Pin3=(+12V)
Yes
Check IC901,IC902 or R901,R902
Bad Cause Damage
Audio signal input
Pin15 from C437(L-CH) Pin15 from C437(L-CH)
Check volume control IC408
Pin13 from C438(R-CH) Pin13 from C438(R-CH)
Pin11 from C439(C-CH)
Pin11 from C439(C-CH)
Pin9 from C440(SL-CH)
Pin9 from C440(SL-CH)
Pin8 from C441(SR-CH)
Pin8 from C441(SR-CH)
Switch control voltage
Repair Repair
Check IC405 IC406
No
From C495 to subwoofer output From C495 to subwoofer output
Pin36 to C493(Subwoofer) Pin36 to C493(Subwoofer)
Pin6 from C442(Subwoofer) Pin6 from C442(Subwoofer)
Pin39 from RB102 Pin26(CE)
Check IC408 data
Yes
No
Change
Power supply
Check IC408
Pin30=(-7V) Pin30=(-7V)
Pin5=(+7V)
Pin5=(+7V)
Change
R466 or R467
No
Pin40 from RB102 Pin14(data)
Pin41 from RB102 Pin24(clk)
Change IC408
Ok Ok
Check Mpeg BD section
to CN102 circuit
Between IC6(CPU) to IC2,IC3
(Surround mode) (Surround mode)
Ic405 Ic406 Pin9.10.11 = (0V) Ic405 Ic406 Pin9.10.11 = (0V)
1: At aux/TV, tuner mode 1: At aux/TV, tuner mode
(5.1 CH mode) (5.1 CH mode)
Ic405 Ic406 Pin9.10.11 = (+5V)
1: At DVD dolby mode 1: At DVD dolby mode
IC406 Pin13=D/SR IC406 Pin13=D/SR Pin1=D/SL Pin1=D/SL
Pin3=D/subwoofer Pin3=D/subwoofer
(Surround mode)
At aux/TV, tuner mode
IC405 Pin12=P/L IC405 Pin12=P/L Pin2=P/R Pin2=P/R Pin5=P/C Pin5=P/C
IC406 Pin2=P/SR IC406 Pin2=P/SR Pin12=P/SL Pin12=P/SL
Pin5=P/subwoofer Pin5=P/subwoofer
Yes Yes
Yes Yes
RB601 Audio Signal output RB601 Audio Signal output
Pin4=R Pin4=R Pin5=L Pin5=L
Pin6=C Pin6=C
Pin7=SR Pin7=SR Pin10=SL Pin10=SL
Check Surround BD 6CH mode
Control voltage Pin9=(0v) Control voltage Pin9=(0v)
No
Yes
Between CN601 to
IC405,IC406 circuit
Repair
Audio Signal input Audio Signal input
Surround BD circuit
Repair
No
Check IC401 power supply
Change Ic401
Yes
Pin16(VDD)=+7V Pin16(VDD)=+7V
Pin7(VEE)=-7V Pin7(VEE)=-7V
At aux/TV, tuner mode
Between IC402 to CN601
Repair
Pin2 and Pin3 circuit
And power supply circuit
Power Supply circuit
No
Yes
Check IC401Pin9 and Pin10
Switch control voltage Switch control voltage
Pin10=(A) Pin10=(A)
No
Pin9=(B) Pin9=(B)
(Pin10=+5V, Pin9=0V) for aux mode (Pin10=+5V, Pin9=0V) for aux mode
(Pin10=0V, Pin9=0V) for TV mode (Pin10=0V, Pin9=0V) for TV mode
(Pin10=+5V, Pin9=+5V) for tuner mode
Between IC401 Pin9,10 to
IC408 Pin3,4 Circuit or
Repair
IC408 Circuit
(Pin10=0V, Pin9=+5V) for DVD line out (Pin10=0V, Pin9=+5V) for DVD line out
REPAIR INSTRUCTIONS
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