3-4
3. Test & debug flow
Test
Check the AC Voltage
(110V or 220V)
Switch on the Power PCBA
Check the Power PART
Is
the DC Voltage
Outputs OK? (5.2V,5V,1.8V
,3.3V,8V,12V)
Check the Power PART
Is
3.3V, 1.8V,5V,12V and 8V
outputs normal on main
PCB
Check the IC105 or diode
Connect to PC RS232 Cable and
Update the flash memory code
Update
Flash(IC502)
Successfully?
A
1.Check 27MHz system clock.
2.Check system reset circuit.
3.Check flash R/W enable signal PRD
4.Check RS232 Signals
5.Check flash memory related circuit
Replace flash(IC502)
Yes
yes
yes
Yes
No
No
No
No
Summary of Contents for DVB413
Page 39: ......
Page 43: ...3 37 3 38 4 DRIVER CIRCUIT DIAGRAM SR14810A DV8000 s ALI Model 04 1 6 CD DVD LD will not on ...
Page 45: ...3 41 3 42 6 5 1CH SCART CIRCUIT DIAGRAM SR14816A DV8000 s ALI Model 04 1 6 5 1CH Audio bad ...
Page 50: ...3 51 3 52 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE ...
Page 52: ...3 55 3 56 4 SMPS P C BOARD LOCATION GUIDE Solder Side ...
Page 53: ......
Page 59: ......
Page 61: ......
Page 75: ......