– 34 –
NO POWER
No
Yes
Yes
Yes
No
(or the voltage to some lines is not supplied.)
After a few seconds, the set will be switched off.
Check 'Power Failure' Circuit.
No:
All 0V
(except '5V_STBY' line)
Is
the voltage to all lines
supplied?
Is
the voltage
to "5V_STBY" line
supplied?
Is
fuse open?
Check: arround
CPU (IC800), IC (IC803),
Crystal (X801), Power Unit
Check: Power Unit
Check: Power Unit
Diod
Detected Voltage
D1660
9V
Power Failure Line
CPU (IC800) 48pin
D1620/D1621
D3.3V
D1651
5V
D1671
AUDIO_POW
TROUBLESHOOTING FLOW CHARTS
Summary of Contents for DP50741
Page 33: ... 29 IC1640 IC5730 DC to DC Converter IC BLOCK DIAGRAMS CONT IC801 EEPROM ...
Page 35: ... 31 IC5500 Block Diagram IC BLOCK DIAGRAMS CONT IC6200 Low output Amplifier ...
Page 36: ... 32 IC8500 USB Protection IC5700 DDR Double Data Rate SDRAM ...