3-2
ELECTRICAL TROUBLESHOOTING GUIDE
1. Power check flow
No 3.4VA.
No 3.4VA
Is 3.4VA section working?
Is 3.4V present at emitter
of Q121?
Replace Q121.
Replace IC101.
Is there a DC voltage at
Cathode of D105 or D107?
Check FR101
No 5V
Is 3.4VA section working?
Replace Q126.
Is 5.6V present at collector
of Q126?
NO
NO
YES
YES
YES
Check D105/D106/D107/
D108 and replace.
YES
YES
A.
B.
NO
NO
NO
Содержание DVB611
Страница 23: ...3 12 2 Tray open waveform FIG 3 2 3 Tray close waveform FIG 3 3 OPEN CLOSE LM LM OPEN CLOSE LM LM...
Страница 26: ...3 15 FIG 7 2 DVD FIG 7 3 CD FACT FACT FE FE SBAD SBAD...
Страница 27: ...3 16 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD FE FOSO FACT FACT FACT FE SBAD...
Страница 30: ...3 19 11 RF WAVEFORM FIG 11 1 12 ZR36882 AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF FIG 12 1 RFO SPDIF...
Страница 31: ...3 20 13 ZR36882 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS FIG 13 1 2 Y FIG 13 2 JK702 pin6 JK702 pin7...
Страница 32: ...3 21 14 AUDIO OUTPUT FROM AUDIO DAC 1 AUDIO L R FIG 14 1 3 C FIG 13 3 JK702 PIN8 JK702 PIN4 5 1KHz 0DB...
Страница 33: ...3 22 2 Audio Related Signal FIG 14 2 AOUT0 ABCK ALRCLK...
Страница 39: ......
Страница 41: ...3 30 3 31 2 SYSTEM CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T...
Страница 42: ...3 32 3 33 A B C D E F G H I J K L M N O P Q R S T 3 SERVO CIRCUIT DIAGRAM...
Страница 43: ...3 34 3 35 4 AV JACK CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T...
Страница 44: ...3 36 3 37 5 TIMER CIRCUIT DIAGRAM 3 TOOL ONLY A B C D E F G H I J K L M N O P Q R S T...
Страница 45: ...3 38 3 39 6 TIMER CIRCUIT DIAGRAM 4 TOOL ONLY A B C D E F G H I J K L M N O P Q R S T...
Страница 46: ...3 40 3 41 7 TIMER CIRCUIT DIAGRAM 6 TOOL ONLY A B C D E F G H I J K L M N O P Q R S T...
Страница 47: ...3 42 3 43 8 TIMER CIRCUIT DIAGRAM 7 TOOL ONLY A B C D E F G H I J K L M N O P Q R S T...
Страница 48: ...3 44 3 45 9 TIMER CIRCUIT DIAGRAM 8 TOOL ONLY A B C D E F G H I J K L M N O P Q R S T...
Страница 50: ...3 48 3 49 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW...
Страница 51: ...3 50 3 51 2 KEY P C BOARD LOCATION GUIDE 3 TIMER P C BOARD TOP VIEW LOCATION GUIDE BOTTOM VIEW...
Страница 52: ...3 52 3 53 4 SMPS P C BOARD 360mm ONLY 5 SMPS P C BOARD 430mm ONLY LOCATION GUIDE...
Страница 53: ......
