42
XV-Z12000
NO
YES
NO
YES
Check OSD.
Press the key on the main
unit or the [MENU] key on the
remote control.
Is the menu display brought
up?
Is there a clock signal at
R8974?
Is a synchronization signal
present at TL8026 - 28?
End.
Is a clock signal (37.125
MHz) present at TL8114?
IC8025 (CVIC) is defective.
NO
YES
NO
YES
IC8029 (GA4) is defective.
YES
Is there a clock signal at
FL8110?
NO
X8005 is defective.
IC8029 (GA4) is defective.
YES
Is a synchronization signal
present at TL8112 and
TL8113?
Check FL8141 - FL8148 using
an oscilloscope. Is the signal
seen correct?
NO
YES
The J5 connector or the
formatter unit is defective.
Is there a signal at TL8106 -
TL8111?
YES
NO
IC8025 (CVIC) is defective.
IC8029 (GA4) is defective.
NO
IC8025 (CVIC) is defective.
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