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Under normal conditions of use,
the DVS-V will require little
maintenance if it is protected by
a dust cover when not in use.
Virtually no repair or adjustment
will be needed, since all operat-
ing component are protected and
solid-state circuitry assures ex-
ceptionally high reliability.
Cleaning
Periodically, some cleaning will
be necessary. The main instru-
ment housing and control unit
should be dusted from time to
time with a soft cloth or brush …
and the lenses washed with soap
and water and dried with a soft
cloth or tissue.
If the instrument has become
very soiled, it may be washed
with a mild soap and water solu-
tion or wiped with a general pur-
pose spray cleaner. (Other sol-
vents are not recommended.)
Be sure to disconnect the unit
from its power supply before
washing.
When the DVS-V is used in a
heavy industrial environment,
such as that of a foundry, it is
possible that some dust may ac-
cumulate on the stereo targets.
In this case, remove the top
cover of the instrument and care-
fully dust the targets with a soft
camel’s hair brush. The drum
should not be removed. Instead,
rotate it using the test advance /
reverse buttons on the control
panel.
If carrying the instrument long
distances, Keystone View rec-
ommends transporting it in its
specially-designed carrying case.
(product #1140)
Lamp Replacement
Two Nichia NSPW515BS Long-
Life Daylight LED’s lamps pro-
vide illumination of the stereo
targets. Although they are rated
for a long duration of continuous
use, replacement may eventually
be required. Two extra lamps
are included with the DVS-V,
they are taped on the inside wall
of the machine. Simply unscrew
and remove the top panel in or-
der to access the lamps.
Fuse Replacement
A standard 3/4 ampere automo-
tive-type fuse is incorporated in
the circuitry of the DVS-V to
protect the unit against possible
electrical malfunction.
Should replacement ever be re-
quired, order an 3 AG 3/4 amp.
Fuse (1,25 inches long) from
your distributor (Part No. 297-
800).
Target Drum Installation and
Synchronization
The DVS-V Screener is shipped
ready for operation, with the tar-
get drum installed and synchro-
nized with the control panel.
Should the drum need to be re-
placed or removed, instrument
owners can reinstall the drum
using the following guidelines:
Drum Removal: Push the spring
clips outward from the end of the
drum. Slide the drum towards
the rear of the instrument (away
from the gears) and lift it out.
Drum Replacement and Syn-
chronization:
1) Turn power switch on.
Slowly rotate the black position
gear until the motor gear stops
moving. Observe which signal
light on the control panel is lit.
This shows how the drum is to
be installed.
2) To synchronize the target
drum with the control, the drum
must be inserted with the corre-
sponding target facing the lens
openings at the front.
Insert the drum downward be-
tween the spring clips. Slide it
forward toward the lenses until
the clips snap in toward the
drum. The drum gear cogs
should now be engaged with the
gears on both sides.
3) Press the test advance button
on the control to move the drum
to the next target. Look through
the lenses to determine if the
target is centered vertically in the
lens openings.
4) If a centering adjustment is
required, move only the left
spring clip away from the drum
and move left end of the drum
backward and away from the
gear. The gear must be disen-
gaged from the drum cogs. Ro-
tate the drum backward or for-
ward to accomplish adjustment.
Snap the drum back into posi-
tion, re-engaging the gear. Re-
check target alignment by look-
ing through the lenses.
5) Repeat step 4 if necessary.
DVS-V Maintenance
2