Toshiba BDX2500KU, Service Manual

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11-8
Trouble shooting chart
Abnormal color of video picture.
Abnormal color of
video picture.
Yes
Yes
Yes
Yes
No
No
No
No
Check X4201.C4203 and C4204
whether the 27MHz output signal.
Check whether the 3.3V, 1.2V
and 1.5V power supply voltages
on the Decoder board are normal.
Check whether the video
filter network circuit is normal.
Replace Main PCB.
Check other of power supply
electric circuit or replace Main
PCB.
Correct the connection.
Change IC4001 or replace
Main PCB. Check if the video signals on Pin K19,K20,
K21 of IC4001 are normal.