Specifications

7. Locate the top plate THERMOCOU-
PLE wires attached to the logic board.
Detach these thermocouple wires
from the logic board.
8. Remove the THERMOCOUPLE wires
coming from the probe receptacle at
the back of the unit and disconnect
these wires from the logic board.
9. Locate the screws holding the top
plate assembly and attach to the
case. You can access the screws
through the four holes in the metal
plate or remove the metal plate and
then unscrew the top plate assembly.
10. Replace top plate assembly and
attach to the case.
11. If you removed the metal plate,
replace it, making sure the thermo-
couple and element wires come
through the metal plate. Insert screws
and tighten the metal plate back into
place.
12. Reattach the logic board/power board
assembly.
13. Adjust the encoder wheels for each
motor so each rotates freely through
the optical pick-up slots on the logic
board. Each black slot should project
no further than the holes in the outer
perimeter of each encoder wheel.
14. Reconnect wires and cables to the
power/logic board assembly and put
the display board back into position,
reconnecting cables.
29
MAINTENANCE AND SERVICING