GE HEALTHCARE
DIRECTION 2307224-100, REVISION 6DISCOVERY LS SYSTEM SERVICE MANUAL
Chapter 6 - Table Page 215
6.3 Troubleshooting Tips
6.3.1 Potentiometer Counts Differ
6.3.1.1 Symptom
Potentiometer (pot) counts differ by fewer than 100 counts when the table base moves from CT to
PET.
6.3.1.2 Probable Causes and Suggestions
Refer to Figure 6-139 and Figure 6-145.
1.) Loose pulley set screws. If possible, monitor the position pot and clutch motor pulleys while
pressing the CT and PET position buttons. If the pulleys slip, tighten the set screws.
2.) Broken secondary base position pot. The secondary base position pot is fragile and easily
broken, especially if it shipped with the clutch motor and position pot pulley set screws
tightened. Replace the position pot. Go to Section 6.2.6.25 on page 164, and follow the
procedure to set up the pot. Go to page 210, and characterize the table base.
3.) Broken pot connection wire. Check for loose solder joints and broken wires inside the
insulation. The exposed pot wires are easy to catch and break. Replace or solder the wires. If
the pot was removed to repair, go to Section 6.2.6.25 on page 164, and follow the procedure
to set up the pot. Go to page 210, and characterize the table base.
4.) Poor clutch motor bulkhead connections. Detach and reconnect the bulkhead cables. Go
to page 210, and characterize the table base.
Figure 6-145: Clutch Motor and Base Position Potentiometer
Use a 1.5 mm Allen wrench to loosen two pulley set screws.
Slot on End of Pot
Face pulley and turn
shaft clockwise.
Pulley Shaft
To Next Page
Loading...
