FOOTSWITCH IS NOT WORKING
N
O
YES
NO
YES
NO
YES
N
O
YES
NO
YES
NO
YES
See F
oot
sw
itc
h
N
ot
es o
n
Rear Pa
nel Boa
rd Section
Sch
em
atics
Power
Su
ppl
y
OK
Vo
ltag
e on
U
501
Pi
ns
2,
3,4
,5
Dig
ital Activ
ity on
U
501
Pi
ns
7
&
15
Tr
oub
leshoo
t
Power Supply
Swa
p
Rear Pa
nel PCB
R
ibb
on
C
abl
e P
2
OK
Dig
ital Activ
ity
on
U
501
Pi
n 13
Swa
p Rear
Panel PCB
R
ibb
on
C
abl
e P
2
OK
Sw
ap
Ribbo
n
Cab
le P2
Swa
p Main PCB
Swa
p Main PCB
Sw
ap
Ribbo
n
Cab
le P2
