5 2031005555 Revision B, 04/14
9. Place the chair cable through the large wire hole in the back, and mate into the 9-
pin connector marked CHAIR on the bottom right corner of the electronics board.
See Figure 3.3 for the IS-5000 connector mounting location. Plug the power cord
of the chair into a grounded wall outlet.
(NOTE: Using a non-Topcon chair may require an adapter; see Table 1 for pin
functionality. The chair supplies AC power to the IS-5000, and the IS-5000 acts as
a switch and returns the power to the chair to make it go up and down.)
Pin Function Pin Function
1 Earth Ground (from chair) 6 N/C
2 AC Neutral (from chair) 7 Down Limit Switch (engaged)
3 AC Hot (from chair) 8 Up (pump engaged)
4 N/C 9 Safety Switch Loop
5 Down (solenoid engaged)
Table 1: Chair Connector Pins and Functions
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