DX-V280W/V288W
TROUBLESHOOTING (VIDEO CD SECTION)
When the video CD fails to operate.
Turn on the power switch of set.
Is initial screen display normal?Perform the checking "INITIAL SCREEN FAILURE".
No
Yes
Does the ON-SCREEN indication appear?Perform the checking "ON-SCREEN INDICATION FAILURE".
No
Yes
Does picture appear normally when the video CD disc is playedIs the digital signal input into the pins 104, 105 and 106 of
back?NoIC11?
YesNo
Yes
IC11 is defective.IC12 is defective.
Is playback control and still picture playback possible when theCheck the connection between IC4 and IC6, IC7 and check
video CD version 2.0 disc is played back?NoIC6 and IC7.
Yes
Is sound played back normally when the video CD is playedPerform the checking "CD SOUND PLAYBACK FAILURE".
back?No
Yes
Normal
Y ON-SCREEN display does not appear.
Is signal input into the pins 6 to 8 of IC17?Check the pins 41 to 43 of IC4.
NoCheck RD9, RZ1, and RZ2.
Yes
Is signal input into the pins 21and 22 of IC17?Check the pins 95 and 96 of IC11.
NoCheck RD2, CD7.
Yes
Is 6.75 MHz clock input into the pin 2 of IC17?Check the pin 29 of IC16 and RD3.
No
Yes
Is signal output from the pins 16 to 19 of IC17?Defect of IC17
No
Yes
Defect of IC16.
N 18 N |
ACEC
