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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
MAIN IC (IC5500),
Crystal (X5500), Power Unit
Check: Power Unit
Check: Power Unit
Diod
Detected Voltage
D1641
9V
Power Failure Line
MAIN IC (IC5500) D9pin
D6700
5V
D1613
5V
D1668
AUDIO_POW
TROUBLESHOOTING FLOW CHARTS
Summary of Contents for DP47840
Page 27: ... 27 IC BLOCK DIAGRAMS IC001 Audio AMP ...
Page 28: ... 28 IC1600 IC1640 DC to DC Converter IC BLOCK DIAGRAMS CONT IC1620 DC DC converter ...
Page 29: ... 29 IC5650 IC5660 IC5900 Voltage detector IC5750 Flash Memory ...
Page 31: ... 31 IC6250 Voltage comparator IC5700 DDR Double Data Rate SDRAM ...
Page 32: ... 32 IC BLOCK DIAGRAMS CONT IC6500 IC6530 IC6560 Logic AND gate IC 6600 USB Protection ...