Graymark 803 - SERVICE AND PARTS INFORMATION; Service Flow Chart for Troubleshooting; Ordering Replacement Parts; Factory Servicing Assistance

SERVICE FLOW
CHART
ln
the event
your
Model
BO3 requires
servicing, use
this
Service
Flow
Chart
to aid in locating
the
problem.
Before
using this
chart,
be sure items 1
through
3 are confirmed.
-1.
Compare
your
wiring to
that shown in Fig. T lor
pos-
sible error.
Note especially
the
polarity
of the diodes.
Check
all
solder connections.
Poorly
soldered
connec-
tions must
be reheated
to
form good
joints.
Check
to be sure insulating
*nrh"r,
are
properly
in
place
on
transistor
and
positive
binding
post.
2.
)
-).
INSERT
LINE
CORD
INTO
117-VOLT
AC RECEPTACLE
ROTATE VOLTAGE
CONTROL FULLY
CLOCKWISE
ADJUST A
VOM TO READ
50 VDC
AND CONNECT TO
TERMINAL
OUTPUT
VOLTAGE
PRESENT
VOLTAGE READING
GREATER THAN
20 VOLTS
UNPLUG POWER
SUPPLY
MOVE
VOM POSITIVE
LEAD
TO TERMINAL
STRIP LUG
A
MOVE
VOM
NEGATIVE
LEAD TO
TERMINAL
STRIP LUG
C
(REFER
TO Ftc.
7)
PLUG
LINE
CORD
INTO
AC RECEPTACLE
VOLTAGE PRESENT
CHECK
Q1, CR3
VOLTAGE
PRESENT,
BUT
LESS
THAN
1O VOLTS
HOW TO
ORDER REPLACEMENT
PARTS
lf
you
should require
a replacement part, please
follow
the instructions
listed
below. Replacement
parts
will
be shipped
promptly
to
you,
subject to
the terms
of the
warranty.
Do not
return
the original
component
or fitting
unless requested
to
do so.
Craymark's
warranty
does not
cover components
or
fittings
that have
been
damaged
through
careless-
ness
or incorrect
assembly.
Maii
you
r req
uest for replacement
part
to : G
raymark Parts
Department, P.O.
Box 5020, Santa
Ana, CA 92704.
Enclose
the following:
'1
.
Your
name
and mailing
address.
2.
Date
project
was
purchased.
3. Part number
and
description
(as
listed in
the
PARTS
LIST
of the
part
to
be
replaced.
4. lf replacement part
is not
covered
by the
war-
ranty
you
must:
a. List replacement
cost
as shown
b. Add
$1.00
to cover
handling
costs.
c. lf
you
are
a
California
resident,
add
sales
tax
total
purchase.
d. Enclose your
money
order
or
check
for
the
full
amount.
Sorry,
C.O.D.
not
accepted.
to
EIW
FACTORY
SERVICING
lf
your
completed kit
does not
operate
properlv
and
you
can find no
wiring
errors
or defective
components, write
to our Service
Department
and request
technical
assistance. This
service assistance
is available
to
you
at no
charge.
However,
before
you
write,
be sure
you
have
reviewed
each
stage
of construction.
1.
When
writing,
give
a full description
of the
trouble, indicating
which
sec-
tions
of
the circuit
you
have
tested. ln most
cases, our
service
consultant
can
determine
from
your
letter
the
probable
cause
of trouble
and assist
you
in
repairing
the kit yourself
. .
.
saving
you
time
and service
expense.
2.
ll
our
service
Consultant
cannot determine
the
cause of
difficulty through
22
correspondence,
he will
suggest
that
you
have your
kit
repaired
by
our Serv-
CHECK
CR1 AND
CR2,
T1,,
INSULATING
WASHERS