Install guide

60
P. Contact Heart Rate PCB Replacement
1. Turn off the power to the unit then remove the safety magnet (S1744) from
the upper display.
2. Using a Philips screwdriver, remove the four (4) screws mounting the
upper display. They are located on the bottom side of the console.
3. Lift membrane (P1517) up to expose wiring connections on the back of the
upper PCB (P1944). Warning: Make sure you are grounded before
handling electronics. Failure to do so may result in static damage.
4. Disconnect all wires to the upper PCB by grabbing them at the connector
and pulling away for the connector on the PCB. While holding only the
membrane, remove the display assembly from the console.
5. Remove the eight (8) Philips screws holding upper PCB to the membrane.
6. The contact heart rate PCB is the “black box” mounted inside the console.
Cut the tie wrap tab, which holds this in place.
7. One (1) side of the contact heart rate PCB has one (1) wire coming out of
it, which connects to the upper PCB. The other side of the contact heart
rate PCB has two (2) wires coming out of it. Follow the two (2) wires to
the point where they connect to the two (2) wires leading to the contact
grips. Disconnect both wires at that point.
8. Plug the two (2) leads from the new contact heart rate PCB into the two
(2) wires leading to the contact grips.
9. Mount the new contact heart rate PCB in position, using a 4” tie wrap.
Once secure, cut of the excess of the tie wrap.
10. While making sure not to pinch any wires, lay the display down into the
console housing.
11. Insert the four (4) display screws through console back plate and into
standoffs.
12. Snug these screws until secure. Do not heavily torque.
Q. Lower PCB Replacement
1. Turn power off to the unit.
2. Using a Philips screwdriver, remove the motor hood (P1252).
3. Make sure you are grounded, i.e. use of an ESD grounding strap.
4. Disconnect all wires connected to the lower PCB (P1943). Grab all cables
by the connectors and pull lightly. Pulling on the cable could cause
damage to the cable or the header on the lower PCB.
5. Remove the four (4) Philips screws holding lower PCB to the motor plate.
6. Remove lower PCB and place in anti-static bubble wrap or anti-static bag.
7. Install new lower PCB. Tighten the four (4) Philips screws until they are
snug against the lower PCB mounting plate.
8. Reconnect all wires to the lower PCB. For a diagram of the lower PCB,
refer to page 21. The connections are as follows: