zarunas
Newbie level 3
Hi for all,
Maybe anyone fixed this device.
When powered on runs test (on display lights digits1,2,3,4,5,6,7,8,9),
then lights 0 and indicator Stable lights on,but at weight not responding.
I checked ICs supply its ok 5volts,checked generators on quartz resonators on IC
12C5410AD it-working ,on unknown IC-not.Checked voltage on outputs to tenzosensor:
-Е,+Е 5volts,+S,-S 00,0mV (without weight).With small weight it changed to 0,07мV.
I plot unknown IC schematic.Quartz resonator was changed - no reaction.
Maybe anyone knows this IC type.
Thank you for answers
With kind regards
Some photos with schematic
PS.Sorry for my english
Maybe anyone fixed this device.
When powered on runs test (on display lights digits1,2,3,4,5,6,7,8,9),
then lights 0 and indicator Stable lights on,but at weight not responding.
I checked ICs supply its ok 5volts,checked generators on quartz resonators on IC
12C5410AD it-working ,on unknown IC-not.Checked voltage on outputs to tenzosensor:
-Е,+Е 5volts,+S,-S 00,0mV (without weight).With small weight it changed to 0,07мV.
I plot unknown IC schematic.Quartz resonator was changed - no reaction.
Maybe anyone knows this IC type.
Thank you for answers
With kind regards
Some photos with schematic
PS.Sorry for my english