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Circ
u
it
Trou
b
les
h
ooti
n
g
To
h
el
p
locate
α
fa
u
lt
i
n
t
he
d
o p
owe
r
s
upp
ly,
first
disco
nn
ect
Ρ
2330
.
Th
e
locatio
n
of
t
h
is
p
l
u
g
on
t
h
e
i
n
terface
b
oa
r
d
m
ay
be
dete
r
mi ne
d
f
r
om
t
h
e
parts
locatio
n
g
r
i
ds
locate
d
i
n
t
he p
ullo
u
t
p
ages
at
t
he
r
ea
r
of
t
h
is
ma
n
ual
.
M
a
k
e
certai
n
t
h
e
li
ne
selector
is
pr
operly
set
.
Co
nn
ect
t
he p
owe
r
mo
d
ule
to α va
r
ia
b
le
voltage
t
r
ansfo
r
mer
.
Slowl
y apply
li
n
e
voltage
to
t
he
p
o
w
e
r
mo
d
ule
.
O
bserve
t
he
i
nd
icato
r
lam
p
DS1600
.
T
he
location
of
t
h
is
la
m
p
m
ay be
d
ete
r
m
i
ned
f r
o
m
t
he p
a
r
ts
locatio
n
g
r
i
d
s,
also
.
If
t
he
la
m
p
flas
h
es
at
α
r
eg
u
lar
r
ate,
t
he
h
ig
h
voltage(-300
V
dc)su
pp
lyisprobably
operating
properly
.
Tu
rn
off
t
he
li
ne
p
ower
.
T
urn
t
he P
w
r
L
i
m
(82060)
f
u
lly
Fig
.
r6
.
Re
m
oval of
i
n
te
r
face
ci
r c
u
it
board
s
upp
o
r
t .
M
ai
n
te
na
n
ce-
ΤΜ
5006
cc
w
.
T
he
locatio
n
of
t
h
is
co
n
trol
is
s
h
ow
n
i
n
t
he p
arts
locatio
n
g
r
i
d
.
R
eplace
Ρ
2330
.
Co
n
n
ect
α
d
vm
across
t
h
e
8
V
bus
.
A
pp
ly
ac
li
ne
p
owe
r
at
t
h
e
n
o
m
i
n
al
li
ne voltageto
t
he p
owe
r
mo
du
le
.
Slowly
t
urn
t
he
P
w
r
Lim
co
n
t r
ol
R
20
β
0
c
w
a
nd
o
bse
r
ve
t
he
d
v
m
r
ead
i
n
g
.
T
he
d
vm
sh
o
u
l
d
r
ead
f
r
om
abo
u
t
7
.5
V
to a
bo
u
t
8
.5
V
wh
e
n
82060
is
f
u
ll
y
cw
.
N
ext
adju
st
t
he
+8
V
A
dj,
82151,
for
exactly
8
.20
V
at
no
load
wit
h
no
m
i
n
al
li
ne voltage
.
N
ex
t,
c
heck
th
e
voltage
ac
r
oss
81860,
t
he cu
r
r
en
t
se
n
se
r
esisto
r
.
This sh
o
u
l
d be
f
r
o
m
a
b
o
u
t
0
.2
V
to
ab
o
u
t
0
.4
V
.
V
erif
y
t
he
curren
t
li
m
it
by
s
h
orti
ng
o
u
t
an
y
of
t
he v
oltage
buses
a
nd
noti
ng
t
h
e
recove
r
y
of
t
h
e
s
up
pl
y
afte
r
a
b
o
u
t
α3
seco
nd d
elay
.
C
heck
t
h
e
+26
V
ou
t
pu
ts fo
r
limits
wit
h
i
n
s
p
ecificatio
n
.
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