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.
Summary of Contents for T534AH
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 15 HDMI 480P IC703 VSYNC IC703 HSYNC IC703 DE FIG 14 1 ...
Page 32: ...3 23 18 COMPONENT 720P Y 19 COMPONENT 1080I Y FIG 14 1 ...
Page 41: ...3 34 3 35 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 44: ...3 40 3 41 6 5 1CH SCART CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Page 45: ...3 42 3 43 7 VIDEO HDMI CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Page 47: ...3 46 3 47 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD ...
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