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3-4
3. Test & debug flow
TEST
Check the AC Voltage
Power PCBA(110V or 220V)
NO
Replace power PCBA or
AC transformer.
YES
Switch on the Power PCBA
Is the DC Voltage
outputs OK?
(5V,1.8V,3.3V,8V,12V)
Repair or Replace Power PCBA
NO
Make sure the main PCBA don't
short on VCCs and switch it on.
YES
Is 3.3V and 1.8V DC
outputs normal on main
PCBA?
Check the regulators or related diodes.
NO
YES
Connect to PC RS232 Cable and
update the FLASH memory code.
Update FLASH
successfully?
A
YES
NO
1. Check 27MHz system clock.
2. Check system reset circuit.
3. Check FLASH R/W enable signal PRD,RWR.
4. Check RS232 SIGNALS.
5. Check FLASH Memory related circuit.
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: ......