ELECTRICAL SYSTEM 80Service Manual – Advenger, 2800ST, 3800ST, BR 755, BR 855
Replacing the Operator Control Panel
WARNING!
DISCONNECT BATTERIES BEFORE SERVICING.
CAUTION!
To prevent damage to the new control panel assembly due to static electricity (ESD), wear a properly grounded static control wrist strap before
removing the new assembly from its protective static shielding bag and throughout the entirety of the installation process until the four screws
attaching the assembly to the machine have been re-fastened.
CONTROL PANEL REMOVAL
1 See Figure 41. Flip the seat forward and prop. Remove the (4) Screws (A) from the Control Panel Assembly (B) then lift and tilt the Control
Panel Assembly (B) to access the underside.
2 Take note of the wiring connections for reassembly and then disconnect all wiring and the small clear hose. Advenger / BR 755, 855 -
Completely drain the solution tank to prevent:
• water squirting out of the tting at the control board when the hose is removed
• erroneous pressure reading due to a loss of pressure differential in Pressure Sensing Tube after the new control board is installed.
CAUTION!
DO NOT disconnect the small clear hose from the circuit board because this is connected to the pressure sensor and may damage the
sensor and board. It should only be disconnected from the tting on the top of the tank.
FIGURE 41
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