F3D3
Series
Service Manual Parts Replacement / Section 2.20
Questions? Call Franke Technical Support Group For Your Area. Copyright
2012 Franke, Inc. All rights reserved.
2.20 Main Control Board Replacement
[See Section 1.5 for Part Number]
1)
Disconnect power at outlet. [Pull plug.]
2)
Use a medium Phillips screwdriver to remove the four
(two-left, two-right) front control panel mounting screws.
3)
Pull panel cover/bezel up then out. It can hang from the
power switch wires.
4)
Use Phillips screwdriver to remove the four M5 screws
that mount the control overlay Plexi-panel to the standoff
posts on Main Control Board.
5)
Disconnect overlay panel ribbon harness from bottom-
right terminal on main control board, and set panel aside.
IMPORTANT:
The ribbon harness is fragile. Use care
when disconnecting and connecting. See Photo 4.
6)
Disconnect the remaining terminal connectors that plug
into the Main Control Board, which are marked:
Left side,
from top down:
LOAD CELL
[Black – 5-pin connector]
SENSORS
[Black – 6-pin connector]
LP SENSOR
[Black – 4-pin connector]
24V
(Volt)
[White – 2-pin connector]
MOTORS
[Black – 7-pin connector]
Right side,
from top down:
B-B / LON
[Black 12-pin connector]
RELAY
[Black 3-pin connector]
TEMP PROBE
[Black 2-pin connector]
7)
Use a 6 mm [1/4”] nut driver to remove the six board
mounting-post screws.
8)
Take new Main Control Board from its protective
package, position and align with the six mounting holes.
9)
Using the 6 mm [1/4”] nut driver, replace the six board
mounting-post screws.
IMPORTANT:
Do not over-
tighten these screws!
10) Reattach all left and right side harness and cable
connections. Make sure terminals are fully engaged.
11) Attach touch panel overlay ribbon cable to main board.
12) Position control overlay Plexi-panel over standoff
mounting posts and secure with four M5 screws removed
earlier.
13) Position front cover/bezel over lane touch pads and align
with left and right side mounting holes.
14) Secure cover/bezel with the four screws removed earlier.
Continued…
[Photo 1] Model F3D3S
Remove four front control panel
cover/bezel screws.
[Photo 2]
Pull front cover/bezel up-then-
out. Can hang from switch wires
[Photo 3]
Remove four touch-panel post-
mounting screws.
[Photo 4]
Disconnect the touchpad overlay
ribbon harness from control
board.
