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
Summary of Contents for T514C
Page 21: ...3 12 2 SDRAM CLOCK 3 TRAY OPEN CLOSE SIGNAL FIG 2 1 FIG 3 1 ...
Page 24: ...3 15 FIG 7 2 DVD FIG 7 3 CD ...
Page 25: ...3 16 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD ...
Page 26: ...3 17 FIG 8 2 CD FIG 9 1 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION ...
Page 27: ...3 18 10 TRACKING CONTROL RELATED SIGNAL System checking FIG 10 1 DVD FIG 10 2 CD ...
Page 29: ...3 20 13 MT1389 AUDIO OUTPUT TO AUDIO DAC ASDATA3 2 COMPOSITE VIDEO SIGNAL FIG 12 2 FIG 13 1 ...
Page 30: ...3 21 14 AUDIO OUTPUT FROM AUDIO DAC FIG 14 1 ...
Page 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 ...
Page 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 ...
Page 43: ...3 41 3 42 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE ...
Page 44: ...3 43 3 44 2 KEY P C BOARD 3 TIMER P C BOARD Solder Side Solder Side ...
Page 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 ...
Page 52: ......
Page 53: ......
