Flowchart 1.2 Membrane Switches Not Functioning - Magnum fitness UB300 Maintenance Manual

Flowchart 1.2 Membrane Switches not functioning

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Do any of the keys
function while the
board is lit up?
(beep noise)
no
Remove screws to
reveal back of
upper console
board.
Figure 2.1
Replace the
keypad that
yes
does NOT
function.
Unplug B,C,D
figure 2.1 Does
the START key
work.
yes
Plug in C in figure
2.1. Press START
then the LEFT
STOP/RESET.
Does this work?
yes
Plug in D in figure
2.1. Press START
then the RIGHT
STOP/RESET.
Does this work?
yes
Plug in A in figure
2.1. Press START
then the resistance
HIGHER and
LOWER keys.
Does this work?
D A
Right Stop/Reset Lower keypad
833-124 833-132
in
Replace lower
membrane
no
switch 833-132
Replace
STOP/RESET
no
with 833-124
Replace
STOP/RESET
no
with 833-124
Replace upper
keypad with
no
833-122
B
Upper keypad
833-122
C
Right Stop/Reset
833-124
4