Matrix U3x-01, Service Manual

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7.7 TRoUBleSHooTiNg - No RPM ReADiNg
No RPM iS DiSPlAyeD DURiNg exeRCiSe
PoSSiBle CAUSeS:
1) The console cable is damaged or not properly connected.
2) The console is damaged.
3) The lower control board is damaged.
SolUTioN:
1) Remove the console and check to see if the console cable is connected properly.
2) Check to see if the console cable is pinched or cut, replace as needed.
3) Replace the console.
4) Replace the lower control board.
CHAPTeR 7: TRoUBleSHooTiNg