Read Sharp 76FW-54H Service Manual online
DA100 (50Hz) Chassis – Article for Television Magazine
Faults Connected to the VDP
In later versions of this chassis a slightly different version of VDP was fitted. The type number
(VDP3120) is the same, but the revision number is different. If patterning is experienced after
changing IC801 (VDP3120 only), remove C824 if fitted. This capacitor is fitted from pin 33 of IC801
to ground.
(VDP3120) is the same, but the revision number is different. If patterning is experienced after
changing IC801 (VDP3120 only), remove C824 if fitted. This capacitor is fitted from pin 33 of IC801
to ground.
Figure 57: Position of C824
Note that poor dressing of the cables can also cause patterning.
Two types of VDP have been fitted to the chassis and they are not compatible. Make sure that the
correct type is fitted – VDP3120 or VDP3130 (see the IC table at the start of this article for more
details on IC801 types).
Two types of VDP have been fitted to the chassis and they are not compatible. Make sure that the
correct type is fitted – VDP3120 or VDP3130 (see the IC table at the start of this article for more
details on IC801 types).
Page 59 of 80
Sharp Electronics (UK) Limited - March 2003
Revision 2
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