Husqvarna Automower 420 Technical Manual page 60

5. Disconnect the HMI cable from the main
circuit board and remove the upper section
of the chassis.
5.2.3 Dismantling the display cover
The display cover is mounted on the chassis with
4 screws. To enable the parts to be fully separated,
all cabling between the HMI circuit board and the
upper section of the chassis must be disassembled
from the HMI circuit board.
1. Dismantle the body, see 5.2.1 Dismantling
the body on page 59.
2. Dismantle the chassis, see
5.2.2 Dismantling the chassis on page 59.
3. Unscrew the 4 screws (Torx 20) from the
underside of the upper chassis section.
4. Carefully lift the display cover so as not to
damage the cables connecting the chassis
and display cover.
5. Dismantle the HMI cable and the sensor
cables from the HMI circuit board.
5.2.4 Assembling the display cover
IMPORTANT INFORMATION
When assembling: Make sure parts are
clean and that no cables will be pinched.
An unsealed chassis can let in moisture,
which can result in faults in the mower.
Always use new sealing strips before
putting the chassis halves or the display
cover together. A sealing strip that has
already been used does not provide a
satisfactory seal.
1. Fit a new sealing strip to the upper section
of the chassis. Refer to 5.27 Assembling the
sealing strip on page 79.
NB! In order to obtain adequate sealing, it is
important that the ends of the sealing strips
are laid on top of each other and not next to
each other.
English - 60
5. REPAIR INSTRUCTIONS