Fukuda Denshi 4R2043, Service Manual

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7/16/2019 Fukuda Denshi FX-2111 ECG - Service Manual (1)
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1
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2
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aul
t y
P ow e
r S
up p
l i
e
s v
s
. T
r
oubl e
s
1
.
2
.
1
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f 1
0
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n
i
s
n
o
t
o
u
t
p
u
t
..
.
T h e
F
X
-
2 11 1 do e s no
t
o
p
e r a t e a
t
al
l
si n c e
5
V ,
24V
a
nd
a
l
l
o t
h
e r po we r
s
a re no
t
p r od u c e
d
.
1
.
2
.
2 If
1 0
V
on
l
y i s
n
ot o
u t
p
u t
.. .
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-
ab
l
i
ng
t
h
e
C
PU
,
e
tc
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t
o
ope r
a
t
e
. T
he FX
-
2 11 1 d oe s
no
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appa r en
t
ly
ope r
a
t e
at
a
l
l w hi
l e 2 4
V a
n
d o
t h
e
rs
a r
e a v
a i
l
a b
le .
1
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3
If
+
5
V
d
on
ly i s
no t
o
u t
pu
t .
.
.
T h
e
C
P
U a
nd
o t h e r c
om p o
n e
n t s
a
r
e
n
o
t
supp
l i
e
d w i
t
h p
owe r .
T he
F
X- 2 11 1 doe s
n
o
t
appa r en t l y o
p
e r a t e a
t
al l whil e
p
o we r s o
t h
e r t h a n +
5
V
d
a
r e
a v
a
i l
a bl e .
1
.
2
.
4 I
f +
2
4
V
onl
y
i
s
n o t o u
t
p u t
. .
.
T
h
e L C D an d
ke
y s ope
ra
t e
n
ormal
ly
b
ut
w
av
efor
m
r eco r d i
ng
a
nd
a
l
-
p h anume r i c p ri n t o ut a r e n o t av a i l ab l e at a l l .
1
.
2
.
5
I
f
uni s ol
a
t
e
d
± 5 V
a
ar e
n
o
t
o u t p u
t
.
. .
T
h
e A I D co nv e
r
t
e
r
a
n
d com p a r a t o
r
do no t o pe ra t e
n
o
r
m a l l y
, t
h e r e
b
y
m
a
ki ng E
C
G
w
a v
e
f
o rm o r DC i
npu
t
w
a v e
f
o rm a
b
a
se
l i ne w i t h a l
p
h
anu
m
er
i c s
p r
i
n
t
e
d o
u
t
n o r m al
ly
.
1
.
2
.
6 I
f
i
s
ol
a
t
e
d ± 5
V
f
a n
d ± 5
V
b
a
r e
n ot
o
u t
p
u t
.. .
A l
l
1
2 l ea
d
s
a re
d i
sp
l ayed a nd
r
e
co r d
ed as ba s
e
l i n
e
s w i t h alp h
anume
ri c s
p
r i
n
t
e
d o
u
t
n
o r m a ll y
.
A C a u t i o n
Whe n
ch e c
k
i n g
t
h e p
o we
r
supp
ly
a
nd
r el
a
te
d c
i r
c
u
i t
s f
o
r t r
oub
l es
h
o ot
-
ing
,
ta
k
e suf
f
i c
ien
t ca
re
t o a
v
o i d a s
h
o r t c
i r
c u i
t .
3
-
2
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