A-Dec Dental Lights and Monitor Mounts Service guide
Service Guide
A-dec Dental Lights and Monitor Mounts
A-dec Dental Lights and Monitor Mounts b
Copyright
© 2014 A-dec Inc. All rights reserved.
A-dec Inc. makes no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of merchantability and
fitness for a particular purpose. A-dec Inc. shall not be held liable for any
errors contained herein or any consequential or other damages concerning
the furnishing, performance or use of this material. The information in this
document is subject to change without notice. If you find any problems in
the documentation, please report them to us in writing. A-dec Inc. does not
warrant that this document is error-free.
No part of this document may be copied, reproduced, altered, or transmitted
in any form or by any means, electronic or mechanical, including
photocopying, recording, or by any information storage and retrieval system,
without prior written permission from A-dec Inc.
Trademarks and Additional Intellectual Property Rights
A-dec, the A-dec logo, A-dec 500, A-dec 300, Cascade, Cascade Master
Series, Century Plus, Continental, Decade, ICX, ICV, Performer, Preference,
Preference Collection, Preference ICC, and Radius are trademarks of A-dec
Inc. and are registered in the United States and other countries. A-dec
400, A-dec 200, Preference Slimline, and reliablecreativesolutions are also
trademarks of A-dec Inc. None of the trademarks or trade names in this
document may be reproduced, copied, or manipulated in any manner without
the express, written approval of the trademark owner.
Regulatory Information
Regulatory information mandated by agency requirements is provided
Regulatory Information, Specifications, and Warranty document (
which is available in the Document Library at www.a-dec.com. This document
includes:
• Serial number identification
• Software revisions
• Warranty statement
• Deluxe touchpad help messages
• Intended application and use statements
• Identification of symbols
• Environmental specifications
• Classification of equipment
• Electrical rating and electromagnetic information
• Chair load capacity
p/n
in the
86.0221.00),
Product Service
Product service is available through your local authorized A-dec dealer.
For service information, or to locate an authorized dealer, contact A-dec at
1.800.547.1883 in the USA and Canada or 1.503.538.7478 worldwide, or visit
www.a-dec.com.
Certain touchpad symbols are proprietary to A-dec Inc. Any use of these
symbols, in whole or in part, without the express written consent of A-dec
Inc., is strictly prohibited.
A-dec Dental Lights and Monitor Mounts
Service Guide
A-dec Dental Lights and Monitor Mounts Contents 2
Contents
Overview .......................................................... 4
Customer Service ...............................................................4
U.S. and Canada .................................................................... 4
United Kingdom ..................................................................... 4
Australia .............................................................................. 4
Web Contact ......................................................................... 4
Other Sources of Information .................................................4
Dental Lights and Monitor Mounts Service Reference ....................... 4
Other A-dec Service Documents ................................................ 4
A-dec Dental Lights .............................................. 5
Dental Light Specications ....................................................6
Dental Light Mounting Locations .............................................7
Dental Light Circuit Breaker Locations ......................................8
Dental Light Operations ........................................................9
Dental Light Touchpad Controls .................................................. 9
Power and Intensity Settings ..................................................... 10
A-dec LED Dental Light Manual On/Off and Intensity ..................... 10
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis)
Manual On/Off and Intensity .................................................. 10
A-dec 371/372 Dental Light (Halogen 2-Axis) Manual On/Off
and Intensity ..................................................................... 10
Halogen Dental Light Intensity Switch Voltage Measurements ........... 11
Auto On/Off Function ........................................................... 11
Dental Light Bulb Replacement .................................................. 12
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis) ................... 12
A-dec 371/372 Dental Light (Halogen 2-Axis) ............................... 13
Dental Light Shield Cleaning ..................................................... 14
Halogen Dental Light Shield ................................................... 14
LED Dental Light Shield ........................................................ 14
Dental Light Adjustments .................................................... 15
A-dec LED Dental Light Rotation Adjustments................................. 15
LED Light Range of Motion Adjustments ..................................... 15
LED Light Forward Tilt Adjustment ........................................... 15
LED Light Horizontal and Diagonal Rotation Adjustment .................. 15
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis) Rotation
Adjustments ........................................................................ 16
571/572/6300 Light Head Rotation ........................................... 16
571/572/6300 Horizontal Rotation ........................................... 16
571/572/6300 Diagonal Axis Rotation ........................................ 17
571/572/6300 Vertical Rotation ............................................... 17
571/572/6300 Focus ............................................................ 17
A-dec 371/372 Dental Light (Halogen 2-Axis) Rotation Adjustments ...... 18
371/372 Horizontal Rotation .................................................. 18
371/372 Vertical Rotation ...................................................... 18
Dental Light Flexarm Counterbalance Adjustment ........................... 18
Dental Light Wiring and Power Connections .............................. 19
A-dec LED Dental Light Circuit Board Components ........................... 20
LED Driver Circuit Board Identication ...................................... 20
LED Dental Light Circuit Board Indicators ................................... 20
LED Array Board Indictors ...................................................... 21
LED Dental Light Indicator Light Circuit Board Identication ............ 22
LED Indicator Light Board Indictors ........................................... 22
LED Dental Light Terminal to CAN Adapter Board Identication ......... 23
CAN Adaptor Board ............................................................. 23
A-dec LED Dental Light (570L — 577L) Wiring ................................. 24
571L on an A-dec 511 Chair .................................................... 24
571L on an A-dec 411 Chair .................................................... 25
571L on an A-dec 311 Chair .................................................... 26
572L on an A-dec 511 Chair, Radius Arm Mounted .......................... 27
574L Cabinet Mounted .......................................................... 28
575L Wall Mounted .............................................................. 29
576L Ceiling Mounted ........................................................... 30
577L Track Mounted ............................................................. 31
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis) Circuit
Board Components ................................................................. 32
571/572/6300 Dental Light Output Functions .............................. 32
511 Chair Circuit Board Indicators ........................................... 33
511 Chair Circuit Board Identication ........................................ 33
A-dec 6300 Dental Light Relay Circuit Board .................................. 34
6300 Dental Light Output Functions .......................................... 34
6300 Dental Light Relay Circuit Board LED Indicators ..................... 35
6300 Dental Light Relay Circuit Board Identication ...................... 35
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis) Wiring ............. 36
6300 Ceiling, Wall, and Preference Mount Switch and Data
Line Connections ................................................................ 36
6300 Track Light Switch Connections and Data Line
(2004 and Later) ................................................................. 37
6300 Track Light Switch Connections and Data Line
(2003 and Earlier) ............................................................... 38
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis) Transformer ..... 40
100 VAC Transformer Wiring ................................................... 40
110-120 VAC Transformer Wiring .............................................. 40
220-240 VAC Transformer Wiring .............................................. 41
A-dec 371/372 Dental Light (Halogen 2-Axis) Circuit
Board Components ................................................................ 42
A-dec 311/411 Dental Chair Circuit Board for 371/372 Dental
Light on an A-dec 311 and 411 Chair ......................................... 42
311/411 Chair Circuit Board LED Indicators ................................. 43
311/411 Chair Circuit Board Identication .................................. 43
A-dec 511 Chair Board Components for 371/372 Dental Light
on an A-dec 511 Chair .......................................................... 44
371/372 Dental Light Output Functions...................................... 44
511 Chair Circuit Board LED Indicators....................................... 45
511 Chair Circuit Board Identication ........................................ 45
A-dec 371/372 Dental Light Relay Circuit Board ........................... 46
371/372 Dental Output Functions ............................................ 46
371/372 Dental Light Relay Board LED Indicators .......................... 47
371/372 Dental Light Relay Circuit Board Identication .................. 47
371/372 and 571L/572L Wiring on the 311 and 411 Chair Board ........... 48
A-dec 371/372 Dental Light (Halogen 2-Axis) Wiring ......................... 49
371/372 Dental Light Connections ............................................ 49
On/Off Switch .................................................................... 49
A-dec 371/372 Dental Light Wire Connections on an
A-dec 311 Chair .................................................................. 50
A-dec 371/372 Dental Light Wire Connections on an
A-dec 511 Chair .................................................................. 51
A-dec 371/372 Dental LIght Wire Connections on Cascade, Decade,
Performer, Priority Chairs ...................................................... 52
Dental Light Troubleshooting ................................................ 54
A-dec Monitor Mounts .......................................... 57
Monitor Mount Specications and Adjustments .......................... 58
Monitor Mount Specications .................................................... 58
Monitor Mount Adjustments ...................................................... 58
Tray Holder Tension Adjustment (581) .......................................... 60
Panning Friction Adjustment (587) .............................................. 60
86.0326.00 Rev C Contents 3
A-dec Dental Lights and Monitor Mounts Overview 4
Overview
Customer Service
For questions not addressed in this document, contact A-dec Customer Service
using contact information for your region.
U.S. and Canada
A-dec Inc.
2601 Crestview Drive
Newberg, OR 97132 USA
Tel: 1.800.547.1883 within US and Canada
Tel: 1.503.538.7478 outside US and Canada
www.a-dec.com
www.a-dec.biz
United Kingdom
A-dec United Kingdom
Austin House, 11 Liberty Way
Nuneaton, Warwickshire CV11 6RZ
England
Tel: 0800 ADECUK (233285) within UK
Tel: 44 24 7635 0901 outside UK
www.a-dec.co.uk
Other Sources of Information
Dental Lights and Monitor Mounts Service Reference
This document is a companion to the A-dec Dental Lights and Monitor Mounts
Service Reference (p/n 86.0328.00). The Service Reference contains flow
diagrams and illustrated parts breakdown for lights and monitor mounts.
Circuit board component information is available in both this document and
the Service Reference.
Other A-dec Service Documents
The A-dec 311, 411, and 511 Dental Chairs Service Guide (p/n 86.0380.00)
contains service, maintenance, and troubleshooting content. The A-dec 311,
411, and 511 Dental Chairs Service Reference (p/n 86.0381.00) contains illustrated
parts breakdown content. Circuit board components and flow diagrams are in
both documents. These documents include cuspidors, floor boxes, and support
centers.
The A-dec 300, 400, and 500 Delivery Systems Service Guide (p/n 86.0382.00)
contains service, maintenance, and troubleshooting content. The A-dec 300, 400,
and 500 Delivery Systems Service Reference (p/n 86.0383.00) contains illustrated
parts breakdown content. Circuit board components and flow diagrams are in
both documents. These documents include cuspidors, floor boxes, and support
centers.
Australia
A-dec Australia
Unit 8, 5-9 Ricketty St.
Mascot, NSW 2020
Australia
Tel: (02) 8332 4000
1.800.225.010
www.a-dec.com.au
Web Contact
Partner Resources websites: www.a-dec.biz.
A-dec Dental Lights
This section provides service, usage, adjustments, and maintenance content for A-dec dental lights.
A-dec LED Dental Light (570L — 577L)
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis)
A-dec 371/372 Dental Light (Halogen 2-Axis)
86.0326.00 Rev C A-dec Dental Lights 5
A-dec Dental Lights and Monitor Mounts A-dec Dental Lights 6
Dental Light Specifications
NOTE Specications are subject to change without notice. Some requirements may vary from country to country. For more information, contact your
authorized A-dec dealer.
A-dec LED Dental Light (570L - 577L) A-dec 571/572 and 6300 Dental Light
(Halogen 3-Axis)
Focal Range 16” - 30” (400 mm - 750 mm) 18” - 31” (457 - 787 mm) 18” - 31” (457 - 787 mm)
Bulb n/a Quartz Xenon Halogen, single-end prongs Quartz Xenon Halogen, single-end prongs
Bulb Rating LED: White HBLED, 88-92 CRI 17 V / 95 W 17 V / 95 W
Color temperature White 5,000 Kelvin 5,000 Kelvin 5,000 Kelvin
Light pattern 5.7” x 3.8” at 27.6” (145 mm x 95 mm at 700 mm) 3.3” x 6.3” at 27.6” (84 mm x 160 mm at 701 mm) 3.3” x 6.3” at 27.6” (84 mm x 160 mm at 701 mm)
Nominal Light Intensity ** Cure-safe Mode: 25,000 lux (2323 fc)
High: 30,000 lux (2787 fc)
Medium: 25,000 lux (2323 fc)
Low: 15,000 lux (1394 fc)
Heat Output
(BTU per Hour)
* For electrical specifications, identification of symbols, and other regulatory requirements, refer to the Regulatory Information, Specifications, and Warranty Instructions for Use
(p/n 86.0221.00).
** The LED cure-safe mode provides effective illumination while preventing the premature curing of photo-initiated composites, sealants, and adhesives. This mode uses a medium intensity
light setting and a non-reactive wavelength of light.
24 325 325
High: 24,000 lux (2230 fc)
Medium: 20,000 lux (1858 fc)
Low: 8,000 lux (743 fc)
A-dec 371/372 Dental Light
(Halogen 2-Axis)
High: 24,000 lux (2230 fc)
Medium: 20,000 lux (1858 fc)
Composite: 8,000 lux (743 fc)
Dental Light Mounting Locations
Cabinet-Mounted
(LED and 6300)
Radius Style (LED, 371/372, 571/572, 6300)
Dental Light on A-dec 500 Chair Support Mount
Ceiling-Mounted
(LED and 6300)
Track-Mounted
(LED and 6300)
LED, 371/372, 571/572 Dental Light on
A-dec 300 Chair and 2” Post Mount Support Mount
Wall-Mounted
(LED and 6300)
LED, 371/372, 571/572 Dental Light on
A-dec 500 Chair Support Side Mount
86.0326.00 Rev C A-dec Dental Lights 7
A-dec Dental Lights and Monitor Mounts A-dec Dental Lights 8
CB 1
MAINS
INPUT
VACUUM
RELAY
13A @ 250V~ MAX
POWER ON MODE
ASSISTANT'S ARM
& CONTROL HEAD
CB 3
8A MAX
OUTPUT
0V~ 24V~
DATA
CB 5
CB 4
MAINS OUTPUT
POWER 4A MAX
SIDE
SUPPORT
ARM
DENTAL
LIGHT
MASTER TOGGLE
CONTROL OF POWER
SWITCH ON
NC COM NO
NO CONNECTION
REQUIRED
SWITCH OFF
CB 2
CONNECT AIR SUPPLY
FROM MASTER TOGGLE
10
A
M
P
10
A
M
P
10
A
M
P
10
A
M
P
10
A
M
P
10
A
M
P
10
A
M
P
Dental Light Circuit Breaker Locations
A circuit breaker will interrupt the flow of electricity under abnormal conditions. If the circuit breaker should trip, inspect the wiring to ensure there are no
shorts, and reset by pushing the circuit breaker. If the circuit breaker for the dental light is located on the power supply, its location varies by chair. For non-chair
based lights, the operatory circuit breaker is used.
Chair Model/
Location
Circuit Breaker Location
Mounting Location Circuit Breaker Location
Track Mount
A-dec 311/411
Under Motor
Pump Cover
Cabinet Mount
®
A-dec 511
Under Motor
Post Mount: Cascade,
Decade,
®
Performer,®
early model A-dec chairs
Pump Cover
Ceiling Mount
Cascade,
Performer,
®
Decade,®
®
A-dec
Before
June 2012
Effective June
2012
200, early model
A-dec chairs
Under the Utility Floor
Box Cover
Wall Mount
Dental Light Operations
Dental Light Touchpad Controls
Dental light can be operated from the touchpad on the A-dec 200, 300 and 500 systems. Press the light button on the touchpad to turn on the light, and press and
hold the light button to turn the light off.
Dental Light
Button
Standard Touchpad
Dental Light
Indicator
Deluxe Touchpads
Dental Light Button
Dental Light
Indicator
86.0326.00 Rev C A-dec Dental Lights 9
A-dec Dental Lights and Monitor Mounts A-dec Dental Lights 10
B
B
Power and Intensity Settings
A-dec LED Dental Light Manual On/Off and Intensity
The mode button is used to select the intensity level. The illuminated indicator
shows the selected mode. The dental light retains the selected mode unless the
entire system is turned off, which resets the light to medium intensity.
Mode Indicator
Panel
Power Button
Mode Button
Cure-Safe
High
Medium
Low
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis) Manual On/Off and Intensity
The on/off switch is used to activate the light. The intensity switch toggles
between this light’s three intensity settings (composite, high, and medium).
The dental light button on the touchpad works as a three-way switch with the
on/off switch on the light.
A-dec 371/372 Dental Light (Halogen 2-Axis) Manual On/Off and Intensity
The on/off switch is used to activate the light and to toggle between
intensities. With a touchpad, press the dental light button to activate the light
and to toggle between intensity settings.
(Older models do not
have on/off switch)
NOTE For the A-dec 371/372 Dental Light, medium and composite
intensity settings are available if preferred over high and
composite. Contact A-dec Customer Service for instructions.
Intensity
Switch
On/Off Switch
Halogen Dental Light Intensity Switch Voltage Measurements
The following are the voltage measurements for Halogen lights. If the switch
needs to be replaced, the replacement kit is p/n 90.1039.00.
Position Voltage Wire
Open 5 VDC White
Closed 0 VDC White
NOTE All DC voltage measurements are taken with the black
multimeter lead on the black/white wire.
CAUTION Circuit boards are sensitive to static electricity.
Electrostatic Discharge (ESD) precautions are required when
touching a circuit board or making connections to or from the
circuit board. Circuit boards should be installed only by an
electrician or qualied service person.
Auto On/Off Function
All of the dental lights turn on when the chair back reaches a preset operating
position. When the chair back moves out of the operating position, the light
automatically turns off.
• To turn off the auto on/off feature, press and hold the program and dental
light buttons for three seconds at the same time. One beep confirms the
feature is off.
• To turn on the auto on/off feature, press and hold the program and dental
light buttons for three seconds at the same time. Three beeps confirm the
feature is on.
86.0326.00 Rev C A-dec Dental Lights 11
A-dec Dental Lights and Monitor Mounts A-dec Dental Lights 12
Dental Light Bulb Replacement
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis)
1. Turn off the light, and allow the light to cool.
2. Pull the plastic holder from the light yoke. Remove the bulb from the holder,
but do not remove the outer wrapper.
Holder
Bulb
CAUTION Do not remove the outer wrapper when handling the
new bulb. Finger oils can affect light performance and severely limit
bulb life. If you should inadvertently touch the bulb, gently clean it
with cotton dampened with isopropyl or ethyl alcohol.
WARNING To avoid burning your ngers, allow the light shield to
cool before removing. Never operate the dental light with the light
shield removed. The light shield contains UV blocking additives.
The light shield is also your protection in the unlikely event that
the bulb shatters.
5. Hold the new bulb in its outer wrapper with the pins facing away, and
carefully insert it in the socket. The bulb base is fragile and can break under
excess pressure.
NOTE Part of the pins are still visible when the bulb is fully
inserted.
Outer Wrapper
New Bulb
6. Remove and discard the outer wrapper, reinstall the light shield, and secure
with the toggles.
CAUTION Do not attempt to install the light shield if it has
a broken tab. Contact your authorized A-dec dealer for a
replacement shield and install before operating the light.
7. Verify the operation of the light by turning it on and operating it at each
intensity setting.
CAUTION Use of a halogen bulb other than A-dec p/n
041.709.00 (Philips 14623, G 6.35, 17V, 95W) may result in
damage to the bulb socket.
8. Reorder the bulb, p/n 041.709.00.
3. Release the toggles on the light shield and set the shield aside.
4. Use a gauze pad or cloth to protect ngers. Carefully pull the old bulb from
its socket and discard.
A-dec 371/372 Dental Light (Halogen 2-Axis)
B
Tab
B
A spare bulb is included with your dental light. Follow these steps when
replacing the bulb.
WARNING To avoid burning your ngers, allow the light shield to
cool before removing. Never operate the dental light with the light
shield removed. The light shield contains UV blocking additives.
The light shield is also your protection in the unlikely event that
the bulb shatters.
1. Turn off the light and allow it to cool.
2. Gently pull out on the light shield tabs, then pull the edges of the shield
toward you. Set the light shield aside.
Shield
Bulb Cap
Tab
4. Using a gauze pad or cloth to protect your ngers, carefully pull the old bulb
from its socket. Discard the bulb.
CAUTION Do not remove the outer wrapper when handling the
new bulb. Finger oils can affect light performance and severely
limit bulb life. If you should inadvertently touch the bulb, gently
clean it with cotton dampened with isopropyl or ethyl alcohol.
5. Holding the new bulb in its outer wrapper with the pins away from you,
carefully insert the bulb pins into the socket. A small section of each pin is
still visible when the bulb is fully seated.
Outer
Wrapper
New Bulb
6. Remove and discard the outer wrapper, then reinstall the bulb cap and light
shield.
CAUTION Do not attempt to install the light shield if it has
3. Remove the bulb cap by rotating it counterclockwise. Set the bulb cap aside.
a broken tab. Contact your authorized A-dec dealer for
replacement shield and install before operating the light.
CAUTION Take care when handling the bulb. The bulb base is
fragile and can break under excessive pressure.
7. Verify the operation of the light by turning it on and operating it at each
intensity setting.
8. Reorder the bulb, p/n 041.709.00.
86.0326.00 Rev C A-dec Dental Lights 13
A-dec Dental Lights and Monitor Mounts A-dec Dental Lights 14
Dental Light Shield Cleaning
Halogen Dental Light Shield
1. Turn off the dental light.
WARNING To avoid personal injury, be sure that the light has
cooled before cleaning it.
3. Release the toggles on either side of the light to remove the light shield.
4. To clean the light shield use a small amount of non-abrasive liquid soap and
warm water to wash it. Rinse and dry with a non-abrasive, lint free cloth.
If necessary, soak the pad or cloth with water or with a diluted solution of
mild dish washing liquid before cleaning. Make certain no residue remains on
the surface. Do not use abrasives or chlorine (such as household bleach) on the
surface of the reflector. These can damage or discolor the reflector surface.
CAUTION Do not rub heavily, clean the light shield when it is hot,
or soak the shield assembly in cleaning solution. Doing so may
damage the shield assembly components. Clean the light shield
only as instructed.
CAUTION Do not attempt to install the light shield if it has
a broken tab. Contact your authorized A-dec dealer for a
replacement shield and install before operating the light.
LED Dental Light Shield
A-dec recommends barriers to protect the dental light shield. In the event that
the light shield needs to be cleaned, carefully clean the light shield in place
using a soft cotton cloth with non-abrasive soap and water.
Do not remove the shield unless absolutely necessary. The shield is fitted with
a gasket to keep dust and debris from entering the lens assembly. If liquid or
dirt should bypass the gasket, the shield may be removed for cleaning.
CAUTION Only remove the shield if absolutely necessary. Use
a at-blade tool that won’t damage the light housing. After
removing the shield, do not touch or attempt to clean the multilens assembly or you may damage the components.
Reflector
Toggle
Light Shield
Dental Light Adjustments
A-dec LED Dental Light Rotation Adjustments
CAUTION Circuit boards are sensitive to static electricity.
Electrostatic Discharge (ESD) precautions are required when
touching a circuit board or making connections to or from the
circuit board. Circuit boards should be installed only by an
electrician or qualied service person.
LED Light Range of Motion Adjustments
The LED light offers three axes of rotation.
LED Light Horizontal and Diagonal Rotation Adjustment
To adjust the horizontal and diagonal tension, remove the indicator cover.
1. Use a 7/64” hex key to remove the three screws in the indicator cover.
2. To adjust the friction, turn the locking nut clockwise to increase the tension.
3. To adjust the diagonal tension, turn the screw clockwise to increase the
tension.
Clockwise increases the tension.
LED Light Forward Tilt Adjustment
To adjust the forward tilt motion of the light head, use a 7/64”
hex key to turn the tension screw clockwise to increase tension or
counterclockwise to decrease tension.
Clockwise increases
the tension.
4. Use the three screws to install the indicator cover.
86.0326.00 Rev C A-dec Dental Lights 15
A-dec Dental Lights and Monitor Mounts A-dec Dental Lights 16
A-dec 571/572 and 6300 Dental Light (Halogen 3-Axis) Rotation Adjustments
571/572/6300 Light Head Rotation
The light head needs adjusting if it is difficult to position, moves too easily, or
drifts out of position.
Horizontal Rotation
Diagonal Rotation
Vertical Rotation
571/572/6300 Horizontal Rotation
Use a hex key to make horizontal rotation adjustments, beginning with the top
screw on both sides of the switch housing.
• Increase the tension by turning the screws clockwise.
• Loosen the tension by turning the screws counterclockwise.
Horizontal Rotation
Tension Screws
571/572/6300 Diagonal Axis Rotation
Adjust the screw at the bottom of the switch housing.
• Increase the tension by turning the screw clockwise.
• Loosen the tension by turning the screw counterclockwise
• To eliminate all movement in the diagonal axis, tighten the adjustment
screw until it is tight.
Diagonal Axis
Tension Screw
571/572/6300 Vertical Rotation
1. On one side of the light head, loosen the setscrew.
2. Remove the light yoke plug.
3. Use a large at-blade screwdriver to turn the adjustment screw under the
light yoke plug.
• Increase the tension by turning the screw clockwise.
• Loosen the tension by turning the screw counterclockwise
4. Retighten the setscrew, and reinstall the light yoke plug.
571/572/6300 Focus
1. Place a white towel over the chair headrest to represent the oral cavity.
2. Position the light head at the distance normally used when working in the
oral cavity (select a distance representative of most procedures).
3. Turn the light on.
4. Use a large screwdriver to turn the focus adjusting screw until the light is
most uniform.
Focus Adjustment Screw
Light Yoke Plug
Setscrew
86.0326.00 Rev C A-dec Dental Lights 17
A-dec Dental Lights and Monitor Mounts A-dec Dental Lights 18
A-dec 371/372 Dental Light (Halogen 2-Axis) Rotation Adjustments
371/372 Horizontal Rotation
To adjust the horizontal rotation, use a 5/32” hex key to tighten or loosen the
adjustment screw at the top of the light housing.
Horizontal
Tension
371/372 Vertical Rotation
Dental Light Flexarm Counterbalance Adjustment
To adjust the flexarm counterbalance:
1. Use a Phillips head screwdriver to remove the end caps.
2. Use a hex key to remove the two screws that secure the cover.
3. Remove the cover.
4. Use a 1/2” combination wrench to adjust the nut on the end of the spring.
• If the dental light drifts down, turn the nut clockwise.
• If the dental light drifts up, turn the nut counterclockwise.
5. Set the cover back onto the exarm (but do not reattach) and check for drift.
To adjust the vertical rotation, use a 3/16” hex key to tighten or loosen the
vertical tension screw.
Vertical Tension Screw
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