FRIDEN STW - Page 45

61550
FRIDEN
CALCULATING
MACHINE
CO.,
INC.
Fage
45
CHAPTER 10. FIELD TESTS AND INSPECTION PROCEDURE
The
following
Field
Test
should
be
made
wholly
or
in
part
onevery
Service
Inspection
of
custom—
er
machines
to
ensure
the
accuracy
of
the
ma-
chine.
This
test
will
also
show
up
mechanical
defects
which
lead
to
service
calls
as
well
as
errors,
which
lead
to
customer
dissatisfaction.
The
most
important
thing
to
remember
when
in-
specting
amachine
is:
IT
MUST
PRODUCE
AC-
CURATE
FIGURES.
Secondly,
it
must
run
well
and
look
well.
This
Field
Test
is
primarily
designed
for
the
Model
STW
but
can
be
used
on
all
Friden
Models
by
varying
the
procedure
and
eliminating
portions
which
do
not
apply
to
such
Models
as
C,
CW,
DW,
etc.
CONTROL KEYS
Before
starting
this
test,
make
note
of
the
posi-
tion
of
all
Control
Keyson
themachine.
For
ex-
ample,
if
you
find
the
#6
Tabulator
Stop
depressed,
be
sure
it
is
still
depressed
when
you
leave
the
machine.
This
also
applies
to
the
Add
Key,
Counter
Control
Key,
Multiplier
Non
Entry
Key,
Multiplier
Repeat
Key,
Dial
Lock
Knobs
and
Di-
vision
Stop
Key.
Check
all
Keys:
Numeral
Keys,
Operating
Keys,
Gontrol
Keys,
Decimal
Markers,
etc.,
for
free
action.
Spin
Accumulator
Dials
by
using
the
Twirler
Knobs
to
see
that
theyare
free
and
there
MODEL STW
Note:
Hold
Plus
Bar
and
Minus
Bar
down
for
an
instant
after
each
operation.
Machine
shouldnot
make
more
than one revolution.
COUNTER DIALS AND COUNTER
Make
Multiplication
Test
below
by
using
Plus
and
Minus
Bars:
Check
Lower
Dials
closely
to
see
that
each
Low-
er
Dial
registers
correctly
on
each
stroke.
Plus
10X
means
Plus
10individual
strokes
on
the
Plus
Bar.
Plus
or
Minus
9X
means
Plus
or
Minus
9
times.
Do
not
hold
the
Plus
or
Minus
Bars
down,
but
make
separate
strokes,
ADD KRY UP
SET ON KEYBOARD (123459321
are
no
stuck
Detent
Balls.
Check
Motor
Contact
UPPER
OLALS
with
Plus
Bar.
Check
Individual
Column
Key
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and
One
Cycle
Add
Test.
With
Add
Key
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down,
check
to
see
that
allkeys
release
with
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