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3-7
D
C
YES
NO
YES
YES
NO
NO
Does spindle rotate?
Proper DMSO signal on
MT1389
Check DMSO related
circuit on MT1389.
SP+ & SP- output
properly?
Check the spindle control
amp circuit of motor
driver.
Check the cable connection
between spindle and main PCBA.
YES
YES
NO
NO
Laser turns on when
reading disc?
NO
NO
YES
NO
YES
YES
NO
LD01 or LD02 output
properly?
Check the laser power circuit
on MT1336 and connecting to
power transistor.
Collector voltage of
power transistor is OK?
Check the related circuit on
laser power transistor
Check cable connection between
transistor ouput and pick-up
head.
Put disc in?
Laser off
Disc ID is correct?
Proper RFL signal
on MT1389?
Check the related circuit
on MT1389 RFL signal.
Check LDO1 & LDO2 signal
YES
Содержание T514C
Страница 21: ...3 12 2 SDRAM CLOCK 3 TRAY OPEN CLOSE SIGNAL FIG 2 1 FIG 3 1 ...
Страница 23: ...3 14 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION FIG 6 1 7 DISC TYPE JUDGEMENT WAVEFORM FIG 7 1 ...
Страница 24: ...3 15 FIG 7 2 DVD FIG 7 3 CD ...
Страница 25: ...3 16 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD ...
Страница 26: ...3 17 FIG 8 2 CD FIG 9 1 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION ...
Страница 27: ...3 18 10 TRACKING CONTROL RELATED SIGNAL System checking FIG 10 1 DVD FIG 10 2 CD ...
Страница 29: ...3 20 13 MT1389 AUDIO OUTPUT TO AUDIO DAC ASDATA3 2 COMPOSITE VIDEO SIGNAL FIG 12 2 FIG 13 1 ...
Страница 30: ...3 21 14 AUDIO OUTPUT FROM AUDIO DAC FIG 14 1 ...
Страница 37: ...3 29 3 30 2 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 38: ...3 31 3 32 A B C D E F G H I J K L M N O P Q R S T 3 SYSTEM CIRCUIT DIAGRAM ...
Страница 39: ...3 33 3 34 4 DRIVER CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T CD DVD LD will not on ...
Страница 41: ...6 5 1CH SCART CIRCUIT DIAGRAM T524 MODEL ONLY A B C D E F G H I J K L M N O P Q R S T 3 37 3 38 ...
Страница 43: ...3 41 3 42 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE ...
Страница 44: ...3 43 3 44 2 KEY P C BOARD 3 TIMER P C BOARD Solder Side Solder Side ...
Страница 45: ...3 45 3 46 4 JACK 5 1CH I O P C BOARD OPTIONAL PART 5 SMPS P C BOARD Solder Side Solder Side ...
Страница 52: ......
Страница 53: ......