Main Circuit Board; Heat Exchanger - Toyotomi NS-2800 Service Manual

7-10. Main Circuit Board

(1) Unfasten all the connectors on the main circuit
board.
(2) Remove the main circuit board by squeezing four
(4) PCB supporters with pliers.
(3) The same number is printed on each pair of
connectors to avoid incorrect connection.

7-11. Heat Exchanger

(1) Remove cabinet A/B, front panel, rear panel and
bottom panel.
(2) Remove seven (7) screws from the top air duct
supporter. Remove the air hose and remove the
top air duct supporter by spreading the top air
duct side panel.
(3) Pull out the heat exchanger while spreading the
top air duct side panel.
CAUTION:
When reassembling:
(1) Securely insert the air hose to the joint pipe of
the blower motor case.
(2) Insert the two ears of the top air duct side
panel to the slits of the top air duct top plate
and fix it with screws. Then secure the U-
shaped clip with the wing nut. Make sure that
the heat exchanger is jointed properly with the
heat chamber.
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