11-10
Trouble shooting chart
No video picture, no sound.
No video picture,
no sound.
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Check whether all the voltages
from the power board to the
Decoder board are normal.
Check if the reset circuit consisting
of IC4201,C4205,C4206 and R4206
are normal (at a high level for tens of
milliseconds, then constantly at 3.3V)
Check if there is 600MHz
signal output on R5201.
Check if short-circuit and bad
solder exist on IC4001.
Check the loaded circuit.
CVBS (R1 point) waveform
Change
and R4206 or replace Main PCB.
IC4201,C4205,C4206
Crystal oscillator X4201
and peripheral components
are defected or eroded.
or replace Main PCB.
Check whether there is
27MHz signal output.
Check whether
short-circuit or bad solder
on IC5201,IC5202,IC5203.
27MHz waveform
Check IC4001 or replace Main PCB.
Reconnect the component
or replace Main PCB.
Yes
No
No
IC4001 Pin K7,J7 PCLK waveform
Summary of Contents for BDX2500KU
Page 10: ...3 5 Audio Output Circuit Diagram IC9001 TK11150CSCL G AK4424AET E2 IC9002 ...
Page 11: ...3 6 Video Output Circuit Diagram IC4001 BCM7630BKFEBG Video DAC ...
Page 12: ...3 7 HDMI Output Circuit Diagram IC4001 BCM7630BKFEBG IC2301 TK11150CSCL GH HDMI ...
Page 16: ...DDR3 Circuit Diagram 3 11 DDR3 IC4001 BCM7630BKFEBG ...
Page 19: ...Motor Servo Connect Circuit Diagram 3 14 IC4501 LD1117SC R ...
Page 23: ...4 3 Main PC Board Main PC Board Top Side ...
Page 24: ...4 4 Main PC Board Main PC Board Bottom Side ...
Page 37: ...7 1 EXPLODED VIEW 1 2 3 7 4 6 8 9 5 ...
Page 52: ...1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...