Philips LX-3000D, Service Manual

Page: 11 / 74

F
Tuner No Output
Check to tuner
Yes
Yes
Power supply Power supply
Check tuner VT
From Main BD
From C161 From C161
No
Yes
Change
Check
Check RB101
Pin12=5V
No
Pin11=12V
Check Q910/Q911/Q912
Check IC101 audio output
to IC101 Pin1 circuit
IC101 Pin16 to RB101 Pin13 (R-CH) IC101 Pin16 to RB101 Pin13 (R-CH)
Yes
Yes Yes
REpair FM IF section: REpair FM IF section:
Q101/Q102
Between EF001 to Q101/Q102
No
IC152 Pin15=5V
Q910 or Q911 or Q912 Q910 or Q911 or Q912
No
Check
YES
IC101 Pin8=12V
L153 or L154/L104
Change
Low frequency=1.5-2.0V
Higt frequency=8.0-9.0V
Check IC152 Data
From RB101 From RB101
Pin3/CE
Pin4/DI
Pin5/CL
Pin6/DO
Check IC152 osc input
Pin14/FM input Pin14/FM input
Pin13/AM input
VT No Change
Check Main BD RB102 Check Main BD RB102
Cable loose or bad INT Cable loose or bad INT
RE-Insert and fix
the cable
Yes
No
Check Q103/Q104 Check Q103/Q104
(Between EF001 Pin8 to IC152 Pin14 circuit)
No
Between Main BD CN101 Between Main BD CN101
to RB102 Circuit to RB102 Circuit
Check Mpeg BD CPU IC6 Check Mpeg BD CPU IC6
And IC2/IC3 Bad Cause Damage And IC2/IC3 Bad Cause Damage
No FM function
Check tuner pack EF001
Power supply
Pin6=12V Pin6=12V
No Yes
Yes
Cnange Q103/Q104
Check IC152 or Check IC152 or
VT section Circuit
A: Repair Am osc section (T003) or
(Between IC101 Pin30 to IC152 Pin13 circuit)
B: Repair Fm osc section
No
Check AM IF T102/CF103
No AM function
Yes Yes
Check FM IF output Check FM IF output
Yes
No
Check T105 Check T105
Yes
OK OK
OK
IC101 Pin17 to RB101 Pin15 (L-CH) IC101 Pin17 to RB101 Pin15 (L-CH)
to IC101 Pin1 circuit
REpair FM IF section: REpair FM IF section:
Between EF001 to Q101/Q102 Between EF001 to Q101/Q102
No
Repair tuner signal input circuit
CN101 Pin13 to IC401 Pin4 (R-CH) CN101 Pin13 to IC401 Pin4 (R-CH)
CN101 Pin15 to IC401 Pin11 (L-CH) CN101 Pin15 to IC401 Pin11 (L-CH)
(From Main BD) (From Main BD)
EAR Head Phone
No Sound
G
Check
Cable loose or bad INT Cable loose or bad INT
RE-Insert and fix
the cable the cable
Yes
Ear head phone BD RB301 Ear head phone BD RB301
No No
Yes
Repair Power Supply Repair Power Supply
Circuit
Yes
To main BD CN301 To main BD CN301
No
Check
Pin6=(+12V) Pin6=(+12V)
Ear head phone BD RB301 Ear head phone BD RB301
To main BD CN301 To main BD CN301
No No
Repair Power Supply Repair Power Supply
(Q308) Circuit (Q308) Circuit
Check
Pin2=(+6V)
Ear head phone BD Ear head phone BD
IC304
Yes
No No
Check IC304
Pin7 from RB301 Pin5=(R/CH) Pin7 from RB301 Pin5=(R/CH)
Audio signal input Audio signal input
Pin6 from RB301 Pin4=(L/CH)
Repair main BD
Between R472, R478 Between R472, R478
(From main BD) (From main BD)
to CN301 circuit
No No
Check IC304
Pin3 to FB301=(L/CH) Pin3 to FB301=(L/CH)
Audio signal output Audio signal output
Pin1 to FB302=(R/CH) Pin1 to FB302=(R/CH)
Change IC304
Change phone jack Change phone jack
JK301
Yes
2-5 2-5
REPAIR INSTRUCTIONS