TroubleshootingProcedures
WFM90D and WFM91D ServiceManual 6-57
Usethis proc edure when the menus
arehorizontally unlocked (t earing) in
thePicture display mode.
Yes
No
Checkthe horiz ontal and vertical sync
signalson the Bott om board:
(J9is on Top board.)
J9-18= VSYNC is a T TL Level (locked to
VideoIN V-sync)
J9-19= HSYNC is aTTL Level (lock ed to
VIDEOIN H-sync)
Doesthe
inputsignal have
noisysync?
Arethe
VSYNCand HSYNC
signalsgood and locked
tothe video
inputsignal?
Replacethe Top board.
No
Correctthe problem onthe input signal.
Replacethe Bott om board.
Yes
Figure6 -33: Flowchart for bad menus in the pictur e display