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To remove the power control board (PCB) ribbon:
1. Access the power control board (PCB). (See
Power Supply Housing
.
)
2. Remove the left side track. (See
Visor
Tracks
.)
3. Remove the light shield. (See
Light Receptacles.
)
4. Remove the 5 Phillip-head screws that hold the
inner channel cover in place. Slide the inner
channel cover to the rear, then remove it from
the canopy.
Power Control Board (PCB)
The power control board (PCB) has an AC to DC
power converter, microprocessor, and fan relays. It is
located inside the lower component box. The power
control board operates the lights and fan motor.
The fi ve green connectors are locking type
connectors. Use a small fl at-blade screwdriver to
unlock as follows: Insert screwdriver in the center
of the space between the plug and connector
receptacle on the PCB. Push down on the
screwdriver handle, pivot blade about 5 degrees,
and pull out the plug at the same time.
1
2
3
4
5
6
1 - CN2 Transformer (Primary)
2 - CN1 Fan Motor
3 - CN3 Capacitor Fan Motor
4 - CN5 Push-Button Assembly Connector
Ribbon
5 - CN4A Triac
6 - CN4B Transformer (Secondary)
Caution:
Before reapplying power, ensure the wire
harness at CN3 (white wires) is connected to the
capacitor and the wire harness at CN4B (brown and
blue wires) is connected to the transformer.
Connectors
5. Disconnect the ribbon from the power control
board.
6. Withdraw the extension ribbon from the fan
duct and inner channel of the canopy.
Caution:
Upon reassembly, ensure the PCB ribbon
is fully recessed in the inner channel and remains
clear of channel cover screws.
Inner Channel Cover
Canopy
PCB