Philips MRD200 Service Manual page 12

REPAIR INSTRUCTIONS
H
Audio Line Audio Line
No Output No Output
All function All function
IC407 power supply IC407 power supply
Check main BD Check main BD
No No
Repair IC407 Repair IC407
IC407 power supply IC407 power supply
Power supply circuit Power supply circuit
Pin8=(+12V) Pin8=(+12V) Pin4=(-12V) Pin4=(-12V)
Yes Yes
Check IC407 Check IC407
Repair Repair
Audio Signal output Audio Signal output
Yes Yes
Between C449 ,C454 to JK401(audio out)
Pin7 to C449=(L/CH) Pin7 to C449=(L/CH)
circuit circuit
Pin1 to C454=(R/CH) Pin1 to C454=(R/CH)
No No
Check IC407 Check IC407
No No
Audio Signal input Audio Signal input
Pin5 from C447 to R422=(L/CH)
Pin3 from C452 to R428=(R/CH)
Yes Yes
Chage IC407 Chage IC407
See(C) See(C)
Repair chart Repair chart
Of IC401 to IC402 section circuit Of IC401 to IC402 section circuit
At DVD mode At DVD mode
At (surround) mode At (surround) mode
No Aux/TV/tuner line out No Aux/TV/tuner line out No DVD line out No DVD line out
No No No No
Repair Repair
See (E) and (F) See (E) and (F)
between (RB104 Pin1,Pin2) between (RB104 Pin1,Pin2)
Repair chart Repair chart
to (IC401 Pin2,Pin15) circuit to (IC401 Pin2,Pin15) circuit
2-6
I
Center Line Center Line
No Output No Output
Check main BD Check main BD
No No Repair IC413 Repair IC413
IC413 power supply IC413 power supply
Power supply circuit Power supply circuit
Pin4=(-12V) Pin4=(-12V) Pin8=(+12V) Pin8=(+12V)
Yes Yes
Check IC413 Check IC413
Repair Repair
No No
Audio Signal input Audio Signal input
Between C4008 to R490 Circuit Between C4008 to R490 Circuit
Pin3 from C4008 Pin3 from C4008
Yes Yes
Check IC413 Check IC413
No No
Change IC413 Change IC413
Audio Signal output Audio Signal output
Pin1 to C4004 Pin1 to C4004
Yes Yes
Repair Repair
(Center line out) (Center line out)
Between C4004 to JK402 Circuit Between C4004 to JK402 Circuit
J
Subwoofer Line Subwoofer Line
No Output No Output
Check main BD Check main BD
Repair Repair
(At DVD mode) and (Surround) (At DVD mode) and (Surround)
Yes Yes
Between C495 to JK402 Between C495 to JK402
Subwoofer Signal output Subwoofer Signal output
Circuit Circuit
C495 to R409 to JK402 C495 to R409 to JK402
(Woofer out) (Woofer out)
No No
See (C) Repair chart See (C) Repair chart
Between IC411 to IC405,IC406 Between IC411 to IC405,IC406
circuit circuit
No No
Check at surround mode Check at surround mode Check at DVD mode Check at DVD mode
Subwoofer signal output Subwoofer signal output Subwoofer signal input Subwoofer signal input
IC404 Pin7 to C435 IC404 Pin7 to C435 IC406 Pin3 IC406 Pin3
No No
See (D) See (D)
Repair chart Repair chart
No No
Check main BD Check main BD
Repair Repair
No No
IC403 and IC404 IC403 and IC404
IC403 and IC404 IC403 and IC404
Power supply Power supply
Power supply circuit Power supply circuit
Pin4=(-12V) Pin4=(-12V) Pin8=(+12V) Pin8=(+12V)
Yes Yes
Check IC403 Check IC403 Repair Repair
Yes Yes
Subwoofer signal input Subwoofer signal input
Between IC403 to IC404 Between IC403 to IC404
Pin2 from C420,C421 Pin2 from C420,C421
circuit circuit
No No
See(C) See(C)
Repair chart Repair chart
IC401 to IC406 circuit IC401 to IC406 circuit
2-6
K
Digital Line Digital Line
No Output No Output
At DVD mode At DVD mode
No No
Repair JK106 Repair JK106
Check main BD Check main BD
Power supply circuit Power supply circuit
JK106 Pin2 power supply JK106 Pin2 power supply
Yes Yes
Check Check
Yes Yes
Change JK106 Change JK106
JK106 Pin1 digital signal JK106 Pin1 digital signal
No No
Check Check
Check Check Yes Yes
Between JK106 Pin1 to RB102 Pin15 Between JK106 Pin1 to RB102 Pin15
RB102 Pin15 digital signal RB102 Pin15 digital signal
circuit circuit
No No
Check MPEG BD Check MPEG BD
Betweeen CN102 Pin15 to IC6 Pin41 Betweeen CN102 Pin15 to IC6 Pin41
circuit circuit