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FIG. 5 Slope Sensor Wiring
Slope Sensor
P.C . B.
Outside Lead
Inside Lead
Black Marked Wire
A. Removal
1. Remove sensor wires from circuit board.
2. Remove roll pin from tension spring
3. Remove retainer screw from sensor pivot point (front of laser).
4. Loosen two Phillips head screws on back of counter.
5. Using small needle nose pliers or flat blade screw driver, carefully lift
the gear off the lead screw.
a. Lightly grab gear under tooth wheel and rock slightly while lifting
up.
b. Insert blade of driver between bottom of gear and nylon lead screw
bushing. Rotate driver blade.
6. Using 7/64" hex driver, remove two screws holding counter plate.
7. Lift counter plate assembly up and off lead screw.
8. Remove washer from lead screw.
9. Rotate grade knob until sensor is clear of lead screw.
B. Replacement
1. Apply Nyogel or equivalent heavy lubricant to the threads of the brass
block.
2. Thread lead screw into brass block of sensor (tall part of sensor up)
3. Insert sensor pin into pivot point guide.
4. Replace sensor pin retainer screw.
5. Solder sensor wires into circuit board (refer to drawing).
6. Replace washer on lead screw.
7. Replace counter plate assembly and screws.
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