Leica Rugby 620 User manual

Leica Rugby 620
User Manual
Version 1.0
English

Rugby 620, Introduction 2
Introduction
Purchase Congratulations on the purchase of a Leica Rotating Laser product.
This manual contains important safety directions as well as instructions for setting up
the product and operating it. Refer to "1 Safety Directions" for further information.
Read carefully through the User Manual before you switch on the product.
Product
identification
The type and serial number of your product are indicated on the type plate.
Enter the type and serial number in your manual and always refer to this information
when you need to contact your agency or Leica Geosystems authorised service work-
shop.
Validity of this
manual
This manual applies to the Rugby 620 lasers. Differences between the models are
marked and described.
Available
documentation
Refer to the following resources for all Rugby 620 documentation/software:
• the Leica Rugby CD
• https://myworld.leica-geosystems.com
myWorld@Leica Geosystems (https://myworld.leica-geosystems.com) offers a
wide range of services, information and training material.
With direct access to myWorld, you are able to access all relevant services whenever
it is convenient for you, 24 hours a day, 7 days per week. This increases your efficiency
and keeps you and your equipment instantly updated with the latest information from
Leica Geosystems.
Type: _______________
Serial No.: _______________
Name Description/Format
Rugby 620
Quick Guide
Provides an overview of the product. Intended as a quick
reference guide.

Rugby 620
User Manual
All instructions required in order to operate the product
to a basic level are contained in the User Manual.
Provides an overview of the product together with tech-
nical data and safety directions.
-
Service Description
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company own. View detailed information on your products, buy
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products with the latest software and keep up-to-date with the
latest documentation.
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mySupport Create new support requests for your products that will be answered
by your local Leica Geosystems Support Team. View the complete
history of your Support and view detailed information on each
request in case you want to refer to previous support requests.

Rugby 620, Introduction 3
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- Information, Knowledge, Training. Study the latest online training
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Service Description

Rugby 620, Table of Contents 4
Table of Contents
In this manual Chapter Page
1SafetyDirections 6
1.1 General 6
1.2 Definition of Use 7
1.3 Limits of Use 7
1.4 Responsibilities 7
1.5 Hazards of Use 8
1.6 Laser Classification 10
1.6.1 General 10
1.6.2 Rugby 620 10
1.7 Electromagnetic Compatibility EMC 11
1.8 FCC Statement, Applicable in U.S. 12
2 Description of the System 14
2.1 System Components 14
2.2 Rugby Laser Components 15
2.3 Case Components 15
2.4 Setup 16
3Operation 17
3.1 Buttons 17
3.2 LED Indicators 17
3.3 Turning on and off the Rugby 18
3.4 Automatic Mode 18
3.5 Manual Mode 19
3.6 Elevation Alert (H.I.) Function 20
4Receivers 21
4.1 Rod Eye 140, Classic Receiver 21
4.2 Menu - Rod Eye 140, Classic Receiver 23
4.3 Rod Eye Basic Receiver 23
5Applications 25
5.1 Setting Forms 25
5.2 Checking Grades 26
5.3 Manual Grades 27
6 Batteries 28
6.1 Operating Principles 28
6.2 Battery for Rugby 28
7AccuracyAdjustment 31
7.1 Checking the Level Accuracy 31
7.2 Adjusting the Level Accuracy 32
8Troubleshooting 34
9 Care and Transport 36
9.1 Transport 36
9.2 Storage 36
9.3 Cleaning and Drying 37

Rugby 620, Table of Contents 5
10 Technical Data 38
10.1 Conformity to National Regulations 38
10.2 General Technical Data of the Laser 38
11 Lifetime Manufacturer’s Warranty 40
12 Accessories 41
Index 42

Rugby 620, Safety Directions 6
1SafetyDirections
1.1 General
Description The following directions enable the person responsible for the product, and the
person who actually uses the equipment, to anticipate and avoid operational hazards.
The person responsible for the product must ensure that all users understand these
directions and adhere to them.
About Warning
Messages
Warning messages are an essential part of the safety concept of the instrument. They
appear wherever hazards or hazardous situations can occur.
Warning messages...
• make the user alert about direct and indirect hazards concerning the use of the
product.
• contain general rules of behaviour.
For the users‘ safety, all safety instructions and safety messages shall be strictly
observed and followed! Therefore, the manual must always be available to all persons
performing any tasks described herein.
DANGER, WARNING, CAUTION and NOTICE are standardized signal words for iden-
tifying levels of hazards and risks related to personal injury and property damage. For
your safety it is important to read and fully understand the table below with the
different signal words and their definitions! Supplementary safety information
symbols may be placed within a warning message as well as supplementary text.
Type Description
DANGER Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING Indicates a potentially hazardous situation or an unintended
use which, if not avoided, could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation or an unintended
use which, if not avoided, may result in minor or moderate
injury.
NOTICE Indicates a potentially hazardous situation or an unintended
use which, if not avoided, may result in appreciable material,
financial and environmental damage.
Important paragraphs which must be adhered to in practice as
they enable the product to be used in a technically correct and
efficient manner.

Rugby 620, Safety Directions 7
1.2 Definition of Use
Intended use • The product casts a horizontal laser plane or a laser beam for the purpose of align-
ment.
• The laser beam can be detected by means of a laser detector.
• Remote control of product.
• Data communication with external appliances.
Reasonably
foreseeable misuse
• Use of the product without instruction.
• Use outside of the intended use and limits.
• Disabling safety systems.
• Removal of hazard notices.
• Opening the product using tools, for example screwdriver, unless this is permitted
for certain functions.
• Modification or conversion of the product.
• Use after misappropriation.
• Use of products with recognisable damages or defects.
• Use with accessories from other manufacturers without the prior explicit approval
of Leica Geosystems.
• Inadequate safeguards at the working site.
• Deliberate dazzling of third parties.
• Controlling of machines, moving objects or similar monitoring application without
additional control- and safety installations.
1.3 Limits of Use
Environment Suitable for use in an atmosphere appropriate for permanent human habitation: not
suitable for use in aggressive or explosive environments.
DANGER Local safety authorities and safety experts must be contacted before working in
hazardous areas, or close to electrical installations or similar situations by the person
in charge of the product.
1.4 Responsibilities
Manufacturer of
the product
Leica Geosystems AG, CH-9435 Heerbrugg, hereinafter referred to as Leica Geosys-
tems, is responsible for supplying the product, including the user manual and original
accessories, in a safe condition.
Person responsible
for the product
The person responsible for the product has the following duties:
• To understand the safety instructions on the product and the instructions in the
user manual.
• To ensure that it is used in accordance with the instructions.
• To be familiar with local regulations relating to safety and accident prevention.
• To inform Leica Geosystems immediately if the product and the application
becomes unsafe.
• To ensure that the national laws, regulations and conditions for the operation of
e.g. radio transmitters, lasers are respected.

Rugby 620, Safety Directions 8
1.5 Hazards of Use
CAUTION Watch out for erroneous measurement results if the product has been dropped or has
been misused, modified, stored for long periods or transported.
Precautions:
Periodically carry out test measurements and perform the field adjustments indicated
in the user manual, particularly after the product has been subjected to abnormal use
and before and after important measurements.
DANGER Because of the risk of electrocution, it is dangerous to use poles and extensions in the
vicinity of electrical installations such as power cables or electrical railways.
Precautions:
Keep at a safe distance from electrical installations. If it is essential to work in this
environment, first contact the safety authorities responsible for the electrical instal-
lations and follow their instructions.
NOTICE With the remote control of products, it is possible that extraneous targets will be
picked out and measured.
Precautions:
When measuring in remote control mode, always check your results for plausibility.
WARNING If the product is used with accessories, for example masts, staffs, poles, you may
increase the risk of being struck by lightning.
Precautions:
Do not use the product in a thunderstorm.
WARNING Inadequate securing of the working site can lead to dangerous situations, for example
in traffic, on building sites, and at industrial installations.
Precautions:
Always ensure that the working site is adequately secured. Adhere to the regulations
governing safety and accident prevention and road traffic.
CAUTION If the accessories used with the product are not properly secured and the product is
subjected to mechanical shock, for example blows or falling, the product may be
damaged or people can sustain injury.
Precautions:
When setting-up the product, make sure that the accessories are correctly adapted,
fitted, secured, and locked in position.
Avoid subjecting the product to mechanical stress.
CAUTION During the transport, shipping or disposal of batteries it is possible for inappropriate
mechanical influences to constitute a fire hazard.
Precautions:
Before shipping the product or disposing of it, discharge the batteries by running the
product until they are flat.
When transporting or shipping batteries, the person in charge of the product must
ensure that the applicable national and international rules and regulations are
observed. Before transportation or shipping contact your local passenger or freight
transport company.

Rugby 620, Safety Directions 9
WARNING During dynamic applications, for example stakeout procedures there is a danger of
accidents occurring if the user does not pay attention to the environmental conditions
around, for example obstacles, excavations or traffic.
Precautions:
The person responsible for the product must make all users fully aware of the existing
dangers.
WARNING If you open the product, either of the following actions may cause you to receive an
electric shock.
• Touching live components
• Using the product after incorrect attempts were made to carry out repairs
Precautions:
Do not open the product. Only Leica Geosystems authorised service workshops are
entitled to repair these products.
WARNING If the product is improperly disposed of, the following can happen:
• If polymer parts are burnt, poisonous gases are produced which may impair health.
• If batteries are damaged or are heated strongly, they can explode and cause
poisoning, burning, corrosion or environmental contamination.
• By disposing of the product irresponsibly you may enable unauthorised persons to
use it in contravention of the regulations, exposing themselves and third parties to
the risk of severe injury and rendering the environment liable to contamination.
Precautions:
Product-specific treatment and waste management information can be downloaded
from the Leica Geosystems home page at http://www.leica-geosystems.com/treatment
or received from your Leica Geosystems dealer.
WARNING Only Leica Geosystems authorised service workshops are entitled to repair these prod-
ucts.
WARNING High mechanical stress, high ambient temperatures or immersion into fluids can cause
leakage, fire or explosions of the batteries.
Precautions:
Protect the batteries from mechanical influences and high ambient temperatures. Do
not drop or immerse batteries into fluids.
WARNING If battery terminals are short circuited e.g. by coming in contact with jewellery, keys,
metalized paper or other metals, the battery can overheat and cause injury or fire, for
example by storing or transporting in pockets.
Precautions:
Make sure that the battery terminals do not come into contact with metallic objects.
The product must not be disposed with household waste.
Dispose of the product appropriately in accordance with the national
regulations in force in your country.
Always prevent access to the product by unauthorised personnel.

Rugby 620, Safety Directions 10
1.6 Laser Classification
1.6.1 General
General The following chapters provide instructions and training information about laser safety
according to international standard IEC 60825-1 (2007-03) and technical report IEC TR
60825-14 (2004-02). The information enables the person responsible for the product
and the person who actually uses the equipment, to anticipate and avoid operational
hazards.
1.6.2 Rugby 620
General The rotating laser built into the product produces a visible laser beam which emerges
from the rotating head.
The laser product described in this section is classified as laser class 2 in accordance
with:
• IEC 60825-1 (2007-03): "Safety of laser products"
• EN 60825-1 (2007-10): "Safety of laser products"
These products are safe for momentary exposures but can be hazardous for deliberate
staring into the beam. The beam may cause dazzle, flash-blindness and after-images,
particularly under low ambient light conditions.
Rugby 620:
CAUTION From a safety perspective, class 2 laser products are not inherently safe for the eyes.
Precautions:
1) Avoid staring into the beam.
2) Avoid pointing the beam at other people.
According to IEC TR 60825-14 (2004-02), products classified as laser class 1,
class 2 and class 3R do not require:
• laser safety officer involvement,
• protective clothes and eyewear,
• special warning signs in the laser working area
if used and operated as defined in this User Manual due to the low eye hazard
level.
National laws and local regulations could impose more stringent instructions
for the safe use of lasers than IEC 60825-1 (2007-03) and IEC TR 60825-14
(2004-02).
Description Value
Maximum peak radiant power 2.7 mW ± 5%
Pulse duration (effective) 1.1 ms
Pulse repetition frequency 10 rps
Beam divergence < 1.5 mrad
Wavelength 635 nm ±10 nm

Rugby 620, Safety Directions 11
Labelling
1.7 Electromagnetic Compatibility EMC
Description The term Electromagnetic Compatibility is taken to mean the capability of the product
to function smoothly in an environment where electromagnetic radiation and electro-
static discharges are present, and without causing electromagnetic disturbances to
other equipment.
WARNING Electromagnetic radiation can cause disturbances in other equipment.
Although the product meets the strict regulations and standards which are in force in
this respect, Leica Geosystems cannot completely exclude the possibility that other
equipment may be disturbed.
CAUTION There is a risk that disturbances may be caused in other equipment if the product is
used with accessories from other manufacturers, for example field computers,
personal computers or other electronic equipment, non-standard cables or external
batteries.
Precautions:
Use only the equipment and accessories recommended by Leica Geosystems. When
combined with the product, they meet the strict requirements stipulated by the guide-
lines and standards. When using computers or other electronic equipment, pay atten-
tion to the information about electromagnetic compatibility provided by the manufac-
turer.
CAUTION Disturbances caused by electromagnetic radiation can result in erroneous measure-
ments.
Although the product meets the strict regulations and standards which are in force in
this respect, Leica Geosystems cannot completely exclude the possibility that the
product may be disturbed by intense electromagnetic radiation, for example, near
radio transmitters, two-way radios or diesel generators.
Precautions:
Check the plausibility of results obtained under these conditions.
CAUTION If the product is operated with connecting cables attached at only one of their two
ends, for example external supply cables, interface cables, the permitted level of elec-
tromagnetic radiation may be exceeded and the correct functioning of other products
may be impaired.
Precautions:
While the product is in use, connecting cables, for example product to external battery,
product to computer, must be connected at both ends.
Laser Radiation
Do not stare into the beam
Class 2 Laser Product
according to IEC 60825-1
(2007 - 03)
Po 2.70 mW
= 635 ± 10 nm
a) Laser beam
005758_001
a

Rugby 620, Safety Directions 12
Radios or digital
cellular phones
Use of product with radio or digital cellular phone devices:
WARNING Electromagnetic fields can cause disturbances in other equipment, in installations, in
medical devices, for example pacemakers or hearing aids and in aircraft. It can also
affect humans and animals.
Precautions:
Although the product meets the strict regulations and standards which are in force in
this respect, Leica Geosystems cannot completely exclude the possibility that other
equipment can be disturbed or that humans or animals can be affected.
• Do not operate the product with radio or digital cellular phone devices in the vicinity
of filling stations or chemical installations, or in other areas where an explosion
hazard exists.
• Do not operate the product with radio or digital cellular phone devices near to
medical equipment.
• Do not operate the product with radio or digital cellular phone devices in aircraft.
1.8 FCC Statement, Applicable in U.S.
The greyed paragraph below is only applicable for products without radio.
WARNING
WARNING Changes or modifications not expressly approved by Leica Geosystems for compliance
could void the user's authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful interfer-
ence in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Rugby 620, Safety Directions 13
Labelling Rugby 620
Labelling Rod Eye
Labelling Rod Eye
Complies with FDA performance standards for
laser products except for deviations pursuant to
Laser Notice Nr. 50 July 24, 2007
This device complies with part 15 of the FCC
Rules. Operation is subject to the following
two conditions: (1) This device may not
cause harmful interference, and (2) This
device must accept any interference
received, including interference that
may cause undesired operation.
Leica Geosystems AG
CH-9435 Heerbrugg
Power : 8.4V / 0.5A
Art.No.: 799042
Made in China
Serial Number:10636202500
Type: Rugby 620
005781_001
Rod Eye 140:
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including
interference that may cause undesired operation.
CH-9435 Heerbrugg
Swiss Technology
by Leica Geosystems
Power : 3V / 60mA
Art.No.: 785493
Made in China
Type: RE140
005146_001
Rod Eye Basic:
Made in China
undesired operation.
received, including interference that may cause
and (2) this device must accept any interference
(1) This device may not cause harmful interference,
Operation is subject to the following two conditions:
This device complies with part 15 of the FCC Rules.
S.No.: 1234567
20XX. XX
Manufactured:
CH-9435 Heerbrugg
Leica Geosystems AG
Power: 9.0V / 0.2A
Art.No.: 769811
REBASType:
005664_001

Rugby 620, Description of the System 14
2 Description of the System
2.1 System Components
General description The Rugby 620 is a laser tool for general construction and levelling applications such as
•Settingforms
• Checking grades
• Controlling depths for excavations
If set up within the self-levelling range, the Rugby automatically levels to create an
accurate horizontal plane of laser light.
Once the Rugby has levelled, the head will start rotating and the Rugby is ready for
use.
30 seconds after the Rugby has completed the levelling, the H.I. Alert system becomes
active and protects the Rugby against changes in elevation caused by movement of
the tripod to ensure accurate work.
Available system
components
The delivered components depend on the package ordered.
005782_001
Rugby 620
Li-Ion/Alkaline
Rod Eye 140 Rod Eye Basicor

Rugby 620, Description of the System 15
2.2 Rugby Laser Components
Rugby laser
components
2.3 Case Components
Case components
a) Carry Handle
b) LED Indicators
c) Buttons
d) Battery compartment
e) Charge jack (for Li-Ion battery pack)
005783_001
a
b
c
d
e
a) Rugby laser
b) Rod eye receiver mounted on the bracket
c) Li-Ion battery pack or Alkaline battery pack
d) 2x AA-cell battery
e) User Manual/CD
f) Second receiver (can be purchased separately)
g) 4 x D-cell battery (for alkaline versions only)
h) Charger (for Li-Ion versions only)
005784_001
a
b
c
d
e
f
g
h

Rugby 620, Description of the System 16
2.4 Setup
Location • Keep the location clear of possible obstructions that could block or reflect the laser
beam.
• Place the Rugby on a stable ground. Ground vibration and extremely windy condi-
tions can affect the operation of the Rugby.
• When working in a very dusty environment place the Rugby up-wind so the dirt is
blown away from the laser.
Setting up on a
Tripod
• Attach the Rugby securely to a tripod or laser trailer, or mount on a stable level
surface.
• Always check the tripod or laser trailer before attaching the Rugby. Make sure all
screws, bolts and nuts are tight.
• If a tripod has chains, they should be slightly loose to allow for thermal expansion
during the day.
• Secure the tripod on extremely windy days.
Step Description
1. Set up the tripod.
2. Place the Rugby on the tripod.
3. Tighten the screw on the underside of the tripod to secure the Rugby on the
tripod.
005785_001

Rugby 620, Operation 17
3Operation
3.1 Buttons
Buttons
Description of the
Buttons
3.2 LED Indicators
Main Functions Description
The LED Indicators have three main functions:
• To indicate the level status of the axes.
• To indicate the battery status.
• To indicate an H.I. Alert condition.
Diagram of the LED Indicators
a) Up and Down Arrow buttons
b) Power button
c) Automatic/Manual Mode button
005786_001
a
b
c
Button Function
Up and Down
Arrow
Press to enter a slope for an axis in Manual Mode.
Power Press to turn on or off the Rugby.
Automatic/
Manual Mode
Press once to change the X-axis to Manual Mode with Y-axis self-
levelling.
Press again to change the Y-axis to Manual Mode with X-axis
self-levelling.
Press again to change both axes to Manual Mode with no self-
levelling.
Press again to change back to Full Automatic Mode.
Note the changes in the LED indicators in the Manual
Modes. The red LED indicates that the corresponding axis
is in Manual Mode.
a) Low Battery Indicator LED
b) X-axis Indicator LED
c) Y-axis Indicator LED
005787_001
a
b
c

Rugby 620, Operation 18
Description of the
LEDs
3.3 Turning on and off the Rugby
Turning on and off Press the Power button to turn on or off the Rugby.
After turning on:
• If set up within the 5° self-levelling range, the Rugby automatically levels to create
an accurate horizontal plane of laser light.
• Once levelled, the head starts rotating and Rugby is ready for use.
• After 30 seconds of completing the levelling, the H.I. Alert system becomes active
to protect the laser against changes in elevation caused by movement or settling
of the tripod.
• The self-levelling system and H.I. Alert function continues to monitor the position
of the laser beam to ensure consistent and accurate work.
3.4 Automatic Mode
Description of the
Automatic Mode
The Rugby always starts up in Automatic Mode.
In Automatic Mode the Rugby automatically levels if set up within the 5° self-levelling
range.
IF the is/are THEN
Low Battery Indicator
LED (Li-Ion)
off the battery is okay.
flashing slowly the battery has ≤10% (4 h) power
remaining.
flashing quickly the battery has ≤5% (2 h) power remaining.
red the battery cannot power the Rugby. Charge
the battery.
Low Battery Indicator
LED (alkaline)
off the battery is okay.
flashing slowly the battery is getting low.
flashing rapidly the battery needs to be changed.
X-axis and Y-axis Indi-
cator LEDs
green the axis is level.
flashing green the axis is levelling.
red the axis is in Manual Mode.
both flashing
red
an H.I. Alert is indicated.

Rugby 620, Operation 19
3.5 Manual Mode
Description of the
Manual Mode
After start-up the Manual Mode can be activated. In Manual Mode the self-levelling will
be deactivated. The following options are available:
• Change the X-axis to Manual Mode
• Change the Y-axis to Manual Mode
• Change to Full Manual Mode
After turning the Rugby off and on again, the Rugby is in Automatic Mode.
Changing the X-axis
to Manual Mode
After startup, press the Automatic/Manual Mode Button once to change the X-axis to
Manual Mode.
The X-axis and Y-axis are marked on the top of the Rugby.
Changing the Y-axis
to Manual Mode
Press the Automatic/Manual Mode button again to change the Y-axis to Manual Mode.
The X-axis and Y-axis are marked on the top of the Rugby.
• The X-axis does not self-level and a slope can be entered in this axis using the Up
and Down Arrow buttons on the Rugby.
• The X-axis LED is red.
• The Y-axis continues to self-level and the Y-axis
LED flashes green until level.
When the X-axis is in Manual Mode, the X-axis can be sloped upwards or downwards
as illustrated.
005788_001
• The Y-axis does not self-level and a slope can be entered in this axis using the Up
and Down Arrow buttons on the Rugby.
• The Y-axis LED is red.
• The X-axis continues to self-level and the X-axis
LED flashes green until level.
When the Y-axis is in Manual Mode, the Y-axis can be sloped upwards or downwards
as illustrated.
005789_001

Rugby 620, Operation 20
Changing to Full
Manual Mode
Press the Automatic/Manual Mode button again to change to Full Manual Mode.
The X and Y axes are marked on the top of the Rugby.
3.6 Elevation Alert (H.I.) Function
Description of the
Elevation Alert
function
• The Elevation Alert or Height of Instrument (H.I.) function prevents incorrect work
caused by movement or settling of the tripod that would cause the laser to level at
a lower height.
• The Elevation Alert function becomes active and monitors the movement of the
laser 30 second after the Rugby has completely levelled and the head of the laser
starts rotating.
• The Elevation Alert monitors the laser. If disturbed, both the X-axis LED and Y-axis
LED flash and the Rugby beeps rapidly.
• To stop the alert turn Rugby off and on again. Check the height of the laser before
beginning to work again.
The Elevation Alert function turns on automatically every time the Rugby is
turned on.
Disable or enable
the Elevation Alert
function
The Elevation Alert function can be disabled or enabled by pressing the following
button combination:
• With the Rugby turned on, press and hold the Up and Down Arrow buttons.
• Press the Automatic/Manual Mode button.
The Rugby beeps once to indicate the change.
• Both the X-axis and Y-axis do not self-level and a slope can be entered in the X-axis
using the Up and Down Arrow buttons on the Rugby.
• The X-axis LED is red.
• The Y-axis LED is red.
When both the X-axis and Y-axis are in Manual Mode, the X-axis can be sloped using
the Up and Down Arrow buttons.
005790_001