Stewart Audio Cima AC NT User manual

Producers of Professional Projection Screens
OWNERS MANUAL
Cima AC NT
Retractable, Above Ceiling Screen System

Printed in U.S.A. ©2019 Stewart Filmscreen Corporation
Stewart Filmscreen reserves the right to make changes to the product specified in this document.
Sizes and specifications subject to change without notice at Manufacturer’s discretion. From time to time, this
document is updated. Current versions of documentation are posted on the Stewart Filmscreen website at:
www.stewartfilmscreen.com

Cima AC NT
OWNERS MANUAL
Contents
To the Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Preparing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Product Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Installing the Screen Into the Ceiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Standard Controls:
Keypad Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Projector Trigger Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Keypad & Projector Trigger Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Optional Controls:
Cima-Link Infrared Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cima-Link Ethernet Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cima-Link RS232 Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating the Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Adjusting the Screen Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17
Caring for & Cleaning the Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-20
Product Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4 Stewart Filmscreen
TO THE OWNER
Congratulations on your purchase of one of our highly versatile Cima projection screens representing
“Top of the Class” in standard commercial and residential projection screens. Please take a moment to
review this manual as it will help ensure you many years of trouble-free service from your new Cima by
Stewart Filmscreen product.
ABOUT YOUR CIMA AC NT ELECTRISCREEN
The Cima Above Ceiling Non-Tensioned ElectriScreen is designed for ease of installation. The Cima
Above Ceiling Non-Tensioned features a self-finishing face-plate. There are no user-servicable parts
contained within the unit.
IMPORTANT SAFETY INFORMATION
SAFETY PRECAUTIONS
`Carefully read the instructions appropriate for your needs.
`This screen must be installed by a qualified electrician.
`For supply connections, use wires rated for at least 75 C.
`Use copper or aluminum conductors.
`For indoor use only.
`Do not connect low-voltage to line-voltage power.
`Article 725-54(a), (1) Exception No. 3 (NEC) or Canadian CE Code Handbook, Rule 16-212, Sub Rule (4)
requires segregation between line-voltage and Class 2 (low-voltage) circuits. Low-voltage / network
wires should enter enclosure boxes through separated openings. Also, conductors shall be separated
by at least 1/4” or segregated by barriers. Check with your local electrical inspector for compliance
with local / national codes and wiring practices.
`Earth ground terminal connection must be made as shown in wiring diagrams.
`Proper short-circuit and overload protection must be provided at the circuit breaker distribution
panel. You can use up to a 20A maximum circuit breaker with adequate short-circuit breaking
capacity for your installation.

Cima NT AC 5
PREPARING THE INSTALLATION
The Cima Above Ceiling Non-Tensioned product can be controlled through a number of remote control
devices, including keypads, dry contact outputs, and low-voltage trigger outputs. With the optional Cima-
Link Controller Packages, your Cima screen can be controlled by local and remote Infrared, IP ethernet,
and computer-based signaling sources such as those manufactured by Control4, AMX, Crestron, Elan
Home Systems with RS-232-C or RS-485 interfaces.
iCAUTION
To be installed and/or used in accordance with appropriate electrical codes and regulations.
You will need:
`Enough ladders for the personnel supporting the screen during the mounting process
`A level
`Fasteners appropriate for the surface on which the screen is being mounted
Note: This manual refers to “AC” to represent electrical power. Your location may use 120 V, 220 V, or
other electrical power. Screen systems are manufactured using the electrical power type specified for
the location. Use appropriate power sources for your location.
UNPACKING
1. Remove the outer plastic covering and white wrapping paper surrounding the screen case.
2. Do not remove the wrapping paper surrounding the screen roller. You should remove it only after
the unit is hung and all electrical connections have been made.
3. Remove the batten lock-down screws located on the back side of the case.
WARNING!
Failure to remove the batten lock-down screws can result in permanent damage to the screen.
MOTOR WIRING
The Cima Non-Tensioned Above Ceiling’s screen motor is pre-wired at the factory. No additional motor
assembly is required.
iCAUTION
During installation, do not place the unit on an unstable cart, stand, table, or ladder. The unit may fall,
causing injury and damage to the unit.

6 Stewart Filmscreen
PRODUCT DIMENSIONS
Detail A: Screen Sideview
7-3/4“ [196 mm]
2-1/8“ [54 mm]
6-1/8“ [154 mm] 6-1/2“
[165 mm]
DIM B =
IMAGE HEIGHT +
BLACK DROP +
BOTTOM MASKING +
1-5/8” [41 mm] (BATTEN)
ROUGH OPENING (DIM D) = DIM A - 3/4” [19 mm]
DIM A = IMAGE WIDTH + (SIDE MASKING X 2)
+ 11-1/2” [292 mm]
DIM C = IMAGE WIDTH + (SIDE MASKING X 2)
+ 10” [254 mm]
C
L
CASE & SCREEN
BATTEN LENGTH =
IMAGE WIDTH + (SIDE MASKING X 2) + 1/4” [6 mm]
BLACK
DROP
IMAGE
HEIGHT SIDE
MASKING
2”
[50 mm]
3-5/8”
[92 mm]
BOTTOM MASKING
2” [50 mm]
IMAGE WIDTH
DIM A (OVERALL LENGTH)
DIM B (SCREEN OUT OF CASE)
DIM C (CASE LENGTH)
DIM D (ROUGH OPENING LENGTH)
6-3/4”
[171 mm]
+/-1/4”
[6 mm]

Cima NT AC 7
INSTALLING THE SCREEN INTO THE CEILING
Professional mounting techniques should be used. Stewart Filmscreen cannot be liable for substandard
or faulty installations.
iCAUTION
During installation of the Cima Above Ceiling Non-Tensioned ElectriScreen into the ceiling opening,
be advised that damage can occur to the screen. Perform the following actions to avoid damage:
`Wear clean gloves throughout the installation process to prevent damage to the screen housing
or screen material.
`Make sure that the screen batten never contacts or strikes any objects as damage may occur.
Note: A false ceiling is not intended to support the weight of a Cima Above Ceiling Non-Tensioned
ElectriScreen.
1. Remove the dust cover for easier access if desired.
2. Raise the screen into the ceiling.
3. Fasten the mounting brackets to the threaded rods or beams above the ceiling. (Note: The unit is
usually suspended, as shown in Figure 1, but it can be secured to the ceiling using bolts or other
appropriate fasteners as well.)
4. Make sure the bottom is flush with
the finished ceiling.
5. Make sure the case is level.
6. Plug in the STI wiring and terminate the power.
7. Replace the dust cover as needed.
Figure 2: Underside View IsometricFigure 1: Overhead View Isometric
RJ25 JACK

8 Stewart Filmscreen
STANDARD CONTROL - KEYPAD CONTROL
A standard, 3-button, low-voltage keypad is supplied for both the standard controller and the optional
Cima-Link Controller Accessories.
MAKING THE CONNECTIONS
1. 1. Connect the RJ25 cable to the keypad.
2. 2. Connect the other end of the RJ25 cable to the Cima unit.
Note: The maximum length of the RJ25 cable shall not exceed 50’.
OPERATION
Press the “Down” button once, and the Cima screen will automatically
extend fully to its pre-set limit, and then will power itself off. Press
the “Up” button once and the Cima screen will automatically retract
back into the case and power itself off. If a custom position is desired,
simply press the “Stop” button at any time during the screen’s
deployment or retraction. (See Figure 4)
Note: See the section on Adjusting the Screen Extension for
information regarding the default limits by which the screen can be
adjusted up or down from the factory pre-set.
Figure 3: Keypad Connection
ADDITIONAL
RJ25 JACK FOR
OPTIONAL CONTROLS
RJ25 JACK
RJ25 JACK
KEYPAD - BACKSIDE
RJ25 CABLE
Figure 4: Keypad Face
UP
DOWN
STOP

Cima NT AC 9
STANDARD CONTROL - PROJECTOR TRIGGER CONTROL
MAKING THE CONNECTIONS
1. Connect a projector trigger cable to the projector. (Note: projector trigger cable not provided – the
installer needs to make the cord from a RJ25 cord, cut one end off and add the mono plug onsite.)
2. Connect the other end of the trigger cable to the Cima unit. (RJ25 plug)
HOW IT WORKS
When the projector is turned on or off a signal is sent to the controller within the motor and will trigger
the screen to move up or down.
If there is a sudden change in direction, the motor is paused for 1/2 second before reversing direction.
This is to prevent strain on the motor mechanism, and to prevent damage to any material controlled
by the motor. Relays are automatically de-energized after 120 seconds of operation to reduce power
consumption.
Figure 5: Projector Connection
ADDITIONAL
RJ25 JACK FOR
OPTIONAL CONTROLS
RJ25 JACK
PROJECTOR
TRIGGER CABLE
(NOT INCLUDED)

10 Stewart Filmscreen
STANDARD CONTROL - KEYPAD & PROJECTOR TRIGGER CONTROL
MAKING THE CONNECTIONS
1. Connect the RJ25 cable splitter to the RJ25 jack in the Cima unit.
2. Connect the RJ25 cable and projector trigger cable to each jack in the splitter. (Note: projector trigger
cable not provided – the installer needs to make the cord from a RJ25 cord, cut one end off and add the
mono plug onsite.)
3. Connect the other end of the RJ25 cable and trigger cable to the jack on the projector and keypad.
KEYPAD OPERATION
Press the “Down” button once and the Cima screen will automatically extend fully to its pre-set limit, and
then will power itself off. Press the “Up” button once and the Cima screen will automatically retract back
into the case and power itself off. If a custom position is desired, simply press the “Stop” button at any
time during the screen’s deployment or retraction. (See Figure 4)
PROJECTOR OPERATION
When the projector is turned on or off a signal is sent to the controller within the motor and will trigger
the screen to move up or down. If there is a sudden change in direction, the motor is paused for 1/2
second before reversing direction. This is to prevent strain on the motor mechanism, and to prevent
damage to any material controlled by the motor. Relays are automatically de-energized after 120 seconds
of operation to reduce power consumption.
Figure 6: Keypad & Projector Connection
ADDITIONAL
RJ25 JACK FOR
OPTIONAL CONTROLS
RJ25 JACK
RJ25 JACK
RJ25 CABLE
KEYPAD - BACKSIDE
RJ25
SPLITTER
PROJECTOR
TRIGGER CABLE
(NOT INCLUDED)

Cima NT AC 11
OPTIONAL CONTROLS - CIMA-LINK CONTROLLER DESCRIPTION
The optional Cima-Link Controller (IMC-100C) is a state-of-the art bi-directional communication AC
motor controller designed to control your Cima projection screen and integrate with optional infrared
remote, additional Cima screens, and 3rd party applications. Up to 255 Cima ElectriScreens can be linked
together on any one span when connected together via the optional Cima-Link RS-232 Serial Package or
Cima-Link Ethernet Package.
Note: The Cima-Link Controller is installed at the factory when ordered with a screen. In the event of
an aftermarket installation, contact the factory for instructions for mounting the controller. Call Toll-Free
800-762-4999 or 310-784-5300.
Figure 8: Cima-Link Controller (face)Figure 7: Screen Side View Isometric
CIMA-LINK
CONTROLLER
(LOCATED INSIDE CASE)

12 Stewart Filmscreen
OPTIONAL CONTROL - CIMA-LINK
INFRARED PACKAGE CONNECTION
MAKING THE CONNECTION
1. Connect the RJ25 cable to the top RJ25 jack located on the left side of the Cima unit.
2. Place infrared eye in line of sight of remote.
Note: The maximum length of the RJ25 cable shall not exceed 50’.
RJ25 JACK FOR
STANDARD
CONTROLS
CIMA-LINK
CONTROLLER
LOCATED
INSIDE CASE
RJ25 JACK
INFRARED REMOTE
Figure 9: Cima-Link Infrared Package Connection
C
I
CO
N
LO
IN
S
INFRARED REMOT
E
RJ25 CABLE
CONNECT CABLE
(STEP 1)
INFRARED EYE
RJ25 CABL
E
CONN
(
INFRARED EYE

Cima NT AC 13
OPTIONAL CONTROL - CIMA-LINK
ETHERNET PACKAGE CONNECTION
MAKING THE CONNECTION
1. Connect the RJ25 cable to the left RJ25 jack located on the left side of the Cima unit.
2. Place the other end of the RJ25 cable to the RJ25 jack in the IP device.
3. Place the RJ45 cable in the RJ45 jack in the IP Device.
4. Place the other end of the RJ45 cable in the end-user device.
Note: The maximum length of the RJ25 cable shall not exceed 50’.
Figure 10: Cima-Link Ethernet Package Connection
RJ25 JACK FOR
STANDARD
CONTROLS
CIMA-LINK
CONTROLLER
LOCATED
INSIDE CASE
RJ25 JACK
IP DEVICE
(BACK)
RJ45 JACK
POWER
SUPPLY
IP DEVICE
(FRONT)
RJ25 JACK
RJ25 CABLE

14 Stewart Filmscreen
OPTIONAL CONTROL - CIMA-LINK
RS232 PACKAGE CONNECTION
MAKING THE CONNECTION
1. Connect the RJ25 cable to the top RJ25 jack located on the left side of the Cima unit.
2. Place the other end of the RJ25 cable to the RJ25 jack in the RS232.
3. Connect the 9-pin end of the RS232 to the 9-pin jack in the end-user device.
Note: The maximum length of the RJ25 cable shall not exceed 50’.
Note: For RS-485 connection protocol, installer may need to provide an adapter to interfacewith the
control system. This adapter is not included.
Figure 11: Cima-Link RS232 Package Connection
RJ25 JACK FOR
STANDARD
CONTROLS
CIMA-LINK
CONTROLLER
LOCATED
INSIDE CASE
RJ25 JACK
RS232
9-PIN
CONNECTS
RS232
RJ25 JACK
RJ25 CABLE

Cima NT AC 15
OPERATING THE SCREEN
DESCRIPTION
The method you use to raise and lower the screen depends on the type of switch control device you
have selected.
When you lower or retract the screen, it will stop at its preset limit. If an obstacle (such as a person or
furniture) is in the path of the screen as it is lowered, use the switch control to stop the screen’s motion
(it will not automatically stop if it hits an obstacle).
The motor is designed to be used for short operations such as lowering the screen in preparation for
viewing. The motor is not designed for continuous duty. If the motor operates continually for more than a
few minutes, it may automatically shut off to prevent damage from overheating. If the motor occasionally
needs to be run more than normal, for example during initial setup and positioning, allow time for the
motor to cool down.
In general, when the screen is not in use, you should store it in the fully retracted position.
iCAUTION
Do not operate the motor when any of the following occurs:
`The unit emits any smoke, heat, abnormal noise or unusual odor.
`The unit is damaged in some way, such as damage from a water leak.
If any of these situations occurs, call a qualified service person.
SWITCH & TRIGGER WIRING
The3-button, low-voltagekeypadoperateswith
only 3 conductors; common, up & down. The
“Stop” function shorts both directions internally
to common. You can use both switching
functions simultaneously by simply connecting
a splitter to the Cima RJ Input jack. The trigger
input is only a 2 conductor connection.
Figure 12: Pinout Diagram

16 Stewart Filmscreen
ADJUSTING THE SCREEN EXTENSION
iCAUTION
Improper adjustment of the limit switches can cause irreparable damage to the screen itself, resulting
in voiding the factory warranty.
The extension and retraction limit switches have been preset at the factory. In general, we advise you
to avoid readjusting these switches. In some cases, to enable proper alignment of the displayed image
on the screen, you may need to adjust the extension of the screen. If adjustment to the extension is
necessary, carefully follow these instructions.
WARNING!
The screen is fully retracted when the batten is flush with the bottom of the case. Do not attempt
adjustments with the yellow retraction (UP) limit switch that will further retract the screen. Incorrect
adjustment of the switch will cause severe screen damage. Please consult the factory if you have
any questions.
ADJUSTING THE SCREEN EXTENSION
The standard preset black drop is 6”; this should not be reduced less than 2” of black drop visible. Please
refer to your specifications on your maximum black drop allowed.
WARNING!
Do not attempt to modify the screen extension beyond these recommended amounts. There is
a line printed on the screen material that warns you where not to exceed the black drop. Going
beyond this line could result in damage to the screen.
To increase the screen’s fully extended (screen down) stop position:
1. Lower the screen to its current stop position.
2. Remove the dust cover to locate the white extension (down) limit switch on the left side of the
screen tube (audience left). Use a small electrician’s style screwdriver or a 5/32” (.4 cm) hex wrench
to turn the switch in a counterclockwise direction. If the power is still on, the screen will drop incre-
mentally as the switch is turned.
Note: One complete turn of the switch will make approximately a 3/4” (2 cm) change in the screen’s
stop position.

Cima NT AC 17
To decrease the screen extension:
1. Lower the screen until it is extended about halfway down.
2. Remove the dust cover to locate the white extension (down) limit switch on the left side of the
screen tube (audience left). Use a small electrician’s style screwdriver or a 5/32” (.4 cm) hex wrench
to turn the switch in a clockwise direction.
Note: One complete turn of the switch will make approximately a 3/4” (2 cm) change in the screen’s
stop position.
3. Activate the screen in the down direction until it reaches the newly reduced stop position. Repeat
this procedure until the desired stop position is reached.
Once you have made the adjustment, whenever you lower the screen, it will automatically stop at the
new position.
Note: The yellow “UP” limit switch is to stop the motor in the retracted position. We advise not adjusting
this switch as to avoid possible screen damage should the switch get mis-adjusted. It is recommended
that you make a note of any changes made to the factory preset.
ADJUSTING THE SCREEN EXTENSION (CONTINUED)

18 Stewart Filmscreen
SCREEN CARE AND CLEANING
With reasonable care, you may expect many years of dependable use of your Stewart projection screen.
We encourage you to keep your screen clean. To protect your screen when it is not in use, store it in the
fully retracted position. Avoid getting any foreign material on the screen, as cleaning may prove very
difficult. It may not be possible to remove scratches, paint, ink, etc.
GENERAL MAINTENANCE
Treat your screen surface delicately. Special attention to these instructions should be followed when
cleaning.
`A draftsman-style brush may be used to lightly whisk away any loose dirt or dust particles. (This
type of brush is usually available at office supply stores.) Stewart Filmscreen has an optional screen
cleaning kit that contains the proper type of brush. Contact your dealer if you would like to obtain
this cleaning kit.
`Particles left on the screen when it is retracted into the case may form an impression on the screen
surface. Periodically wipe the back of the screen with a clean damp cloth.
`For tougher spots, you can make a cleaning solution using a water-based detergent and warm water. To
make the solution, mix one part Simple Green, 409, or other water based industrial cleaner with three
parts warm water. Moisten a clean cotton cloth or Q-Tip with this solution, moisten the stained area,
and gently lift off the stain. Never use an aggressive scrubbing action as you could damage the screen
surface by removing the optical coating. Remoisten the area with clean water and dab dry with a clean
sponge or cotton cloth. Any residual watermarks will evaporate on their own in a few minutes.
Do not use any other cleaning materials on the screen. Contact the factory if you have questions about
removing difficult spots.
WEEKLY MAINTENANCE
To maximize the longevity of your Cima screen we recommend the screen be deployed overnight at
least once a week.
If using a 3rd party control system to deploy your Cima screen, you may be able to program the 3rd party
system to automatically deploy your Cima screen once a week.
REPLACEMENT PARTS & SERVICE
No user-serviceable parts are contained within the unit. Contact your dealer or the factory if you require
part replacement or service.

Cima NT AC 19
TROUBLESHOOTING
Refer to the following guidelines if you encounter a difficulty in the operation of your Stewart Filmscreen
product. Problems related to electrical or motor function may require a qualified service person or
electrician. Should you have a problem that is not addressed here, call Stewart Filmscreen Corporation
(310-784-5300) Toll free (800-762-4999).
Problem Cause Action Steps
Screen won’t operate. No AC power available.
Outboard switching problem.
Check to see if the circuit
breaker has switched off. Reset
if needed. Check outboard
switching apparatus. Check
voltage availability. Contact an
electrician.
Screen won’t roll up or
down (even though power is
available).
Bad connection at switch.
Polarity of IMC / STI line may
be bad.
Have an electrician or
qualified service person check
the connection as follows:
 If you have a low voltage
control unit, check the
switchline connections.
 Check STI / IMC module’s
line connections, or the
miniplugs at the screen
input or projector output.
Check 12V DC line for correct
polarity. Contacts may be
sticking. Tap relay to free
contacts.
Screen roller chatters when
power is activated.
Can be caused by voltage
drop, bad connections, or a
defective switch.
Have an electrician or quali-
fied service person check all
hookups including all outboard
wiring.
Unit hums in up mode. (Screen
has already retracted.)
The screen batten is retracting
too far into the case. Failure
to correct can damage motor
and screen. Do not use the unit
until this problem is resolved.
Have a qualified service
person adjust
the yellow UP limit switch.
Screen drops when up
direction is activated (grinding
noise occurs).
Drop in voltage. Screen motor requires full
voltage. Have an electrician
or qualified service person
check available voltage.

20 Stewart Filmscreen
TROUBLESHOOTING
Problem Cause Action Steps
Screen continues past bottom
stop position.
White limit switch is out of
adjustment.
Readjust the white DOWN
limit switch. See the section
on Adjusting the Screen
Extension.
Batten retracts too far into
case.
Yellow limit switch is out of
adjustment. Failure to correct
can damage motor and
screen. Do not use the unit
until this problem is resolved.
Have a qualified service
person readjust the yellow UP
limit switch.
Motor shuts off. Motor has
been in use for more than 2
minutes.
Motor is designed for short
operations (lowering and
retracting), not continuous
duty. Longer operation, causes
the motor to overheat and
shut off.
Allow the motor to cool down.
Complete cooling can take
an hour or more. Heat gain is
cumulative and takes time to
dissipate. If motor use is
initiated before it has cooled
completely, the motor will shut
down again when it reaches
maximum temperature.
Dirt, fingerprints, marks, etc.
on screen surface.
Improper handling of screen. Lightly brush off or use a mild
detergent solution with a
clean rag or cotton swab.
Indentations appear on screen
surface.
Debris or particles adhering to
screen due to static cling.
Check back of screen; gently
brush debris away with a
draftsman-style brush.