OHAUS Defender 5000 TD52P User manual

Defender5000 Indicators
Service Manual
TD52P
TD52XW
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

i Defender 5000 Indicators Service Manual
TABLE OF CONTENTS
1. INTRODUCTION.......................................................................................................................................... 1
1.1 DEFINATION OF SIGNAL WARNING AND SYMBOLS ........................................................................... 1
1.1.1 Safety Precautions.............................................................................................................................. 1
1.1.2 Relay Option Safety Precautions ........................................................................................................ 1
1.2 SERVICE FACILITIES............................................................................................................................... 2
1.3 TOOLS AND TEST EQUIPMENT REQUIRED ......................................................................................... 2
1.3.1 Special Tools and Test Equipment List............................................................................................... 2
1.3.2 Standard Tools and Test Equipment List............................................................................................ 3
1.4 OVERVIEW OF PARTS AND CONTROLS............................................................................................... 3
1.4.1 TD52P ................................................................................................................................................. 3
1.4.2 TD52XW.............................................................................................................................................. 4
1.4.3 MAIN PC BOARD................................................................................................................................ 5
1.5 CONTROL FUNCTIONS ........................................................................................................................... 6
1.6 EXTERNAL CONNECTIONS .................................................................................................................... 7
1.6.1 Scale Base with Connector................................................................................................................. 7
1.6.2 RS232 interface Cable to TD52P........................................................................................................ 7
1.6.3 AC Power to TD52P............................................................................................................................ 7
1.6.4 AC Power to TD52XW......................................................................................................................... 7
1.6.5 Battery Power...................................................................................................................................... 7
1.7 Internal Connections.................................................................................................................................. 7
1.7.1 Opening the Housing........................................................................................................................... 7
1.7.2 Scale Base Without Connector ........................................................................................................... 8
1.7.3 RS232 Interface Cable to TD52XW .................................................................................................. 10
1.7.4 MICRO SD Card Installation ............................................................................................................. 10
1.8 TD52XW Rear Housing Orientation......................................................................................................... 10
1.9 Mounting Bracket..................................................................................................................................... 10
2SETTINGS.................................................................................................................................................. 11
2.1 Menu Structure.................................................................................................................................. 11
2.2 Menu Navigation...................................................................................................................................... 13
2.3 Calibration Menu...................................................................................................................................... 14
2.3.1 Zero Calibration................................................................................................................................. 14
2.3.2 Span Calibration................................................................................................................................ 15
2.3.3 Linearity Calibration........................................................................................................................... 16
2.3.4 GEO Adjustment ............................................................................................................................... 17
2.4 Setup Menu.............................................................................................................................................. 17

ii Defender 5000 Indicators Service Manual
2.4.1 Capacity Unit..................................................................................................................................... 18
2.4.2 Range................................................................................................................................................ 18
2.4.3 Capacity ............................................................................................................................................ 18
2.4.4 Graduation......................................................................................................................................... 18
2.4.5 Language .......................................................................................................................................... 19
2.4.6 Power On Zero.................................................................................................................................. 19
2.4.7 Power On Unit................................................................................................................................... 19
2.4.8 Key Beep........................................................................................................................................... 19
2.4.9 Transaction Counter.......................................................................................................................... 19
2.4.10 Password......................................................................................................................................... 20
2.4.11 Reset............................................................................................................................................... 20
2.5 Readout Menu ......................................................................................................................................... 20
2.5.1 Stability.............................................................................................................................................. 20
2.5.2 Zero Range ....................................................................................................................................... 20
2.5.3 Filter Level......................................................................................................................................... 20
2.5.4 Auto Zero Tracking............................................................................................................................ 21
2.5.5 Auto Dim............................................................................................................................................ 21
2.5.6 ScreenSaver...................................................................................................................................... 21
2.5.7 Auto Off ............................................................................................................................................. 21
2.5.8 Adjust Contrast.................................................................................................................................. 21
2.5.9 Reset................................................................................................................................................. 21
2.6 Discrete I/O.............................................................................................................................................. 22
2.7 Weighing Unit........................................................................................................................................... 23
2.7.1 Gram (g)............................................................................................................................................ 23
2.7.2 Kilogram (kg)..................................................................................................................................... 23
2.7.3 Pound (lb).......................................................................................................................................... 23
2.7.4 Ounce (oz)......................................................................................................................................... 23
2.7.5 Pound: Ounce (lb: oz) ....................................................................................................................... 23
2.7.6 Tonne (t)............................................................................................................................................ 23
2.7.7 Ton (ton)............................................................................................................................................ 23
2.7.8 Custom Unit (c) ................................................................................................................................. 24
2.8 GMP Menu............................................................................................................................................... 24
2.8.1 Date Format ...................................................................................................................................... 24
2.8.2 Date................................................................................................................................................... 24
2.8.3 Time Format...................................................................................................................................... 24
2.8.4 Time................................................................................................................................................... 25
2.8.5 Project ID........................................................................................................................................... 25
2.8.6 Scale ID............................................................................................................................................. 25

iii Defender 5000 Indicators Service Manual
2.8.7 Reset................................................................................................................................................. 25
2.9 Communication........................................................................................................................................ 25
2.9.1 RS232/2nd RS232 Configuration ....................................................................................................... 25
2.9.2 Print Setup of RS232/2nd RS232 ..................................................................................................... 27
2.9.3 RS485 Configuration......................................................................................................................... 29
2.9.4 Ethernet Configuration ...................................................................................................................... 29
2.9.5 Wifi Configuration.............................................................................................................................. 29
2.9.6 Bluetooth Configuration..................................................................................................................... 29
2.9.7 Analog ............................................................................................................................................... 29
2.10 Service Menu......................................................................................................................................... 29
2.10.1 RAMP.............................................................................................................................................. 29
2.10.2 Expand ............................................................................................................................................ 29
2.10.3 Firmware Update............................................................................................................................. 30
2.10.4 Factory Reset.................................................................................................................................. 30
2.10.5 Board Info........................................................................................................................................ 30
3MAINTENANCE......................................................................................................................................... 30
3.1 Model T52P Cleaning........................................................................................................................ 30
3.2 Model TD52XW Cleaning.................................................................................................................. 30
3.3 Troubleshooting................................................................................................................................. 31
3.4 Service Information............................................................................................................................ 31
4TECHNICAL DATA.................................................................................................................................... 32
4.1 Specifications........................................................................................................................................... 32
4.2 Accessories and Options......................................................................................................................... 33
4.3 Table of Geo Values ................................................................................................................................ 34
5REPLACING MAJOR COMPONENTS (INDICATOR).............................................................................. 35
5.1 Printed Circuit Board (PCB) Replacement............................................................................................... 35
5.2 LCD Replacement................................................................................................................................... 40
5.3 Cable Set Replacement........................................................................................................................... 41
5.3 Function Label Replacement................................................................................................................... 42
5.4 Transformer Replacement ....................................................................................................................... 43
APPENDIX A. CONFIGURING THE MAIN PCBA ........................................................................................... 45
APPENDIX B. SOFTWARE UPDATE VIA SERVICE TOOL ........................................................................... 47
APPENDIX C. SOFTWARE UPDATE VIA MICRO SD CARD ........................................................................ 49

1 Defender 5000 Indicators Service Manual
1. INTRODUCTION
This service manual contains the information needed to perform routine maintenance and service on the
Defender 5000 Series Scales. There will be two parts for the service manual where first part will describe
the service on the Indicator as this manual and second part would describe the service for the bases, please
refer to Defender Series Base Service Manual. Please read this manual completely before repair and
maintenance.
1.1 DEFINATION OF SIGNAL WARNING AND SYMBOLS
Safety notes are marked with signal words and warning symbols. These show safety issues and warnings.
Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions and false
results.
1.1.1 Safety Precautions
For safe and dependable operation of this equipment, please comply with the following
safety precautions:
Verify that the input voltage range printed on the data label matches the local AC power to be used.
Make sure that the power cord does not pose a potential obstacle or tripping hazard.
Use only approved accessories and peripherals.
Operate the equipment only under ambient conditions specified in these instructions.
Disconnect the equipment from the power supply when cleaning.
Do not operate the equipment in hazardous or unstable environments.
Do not immerse the equipment in water or other liquids.
Service should only be performed by authorized personnel.
The TD52XW is supplied with a grounded power cable. Use only with a compatible grounded power
outlet.
1.1.2 Relay Option Safety Precautions
This equipment may have an optional AC or DC Relay Option board installed. This option allows external
devices to be controlled by the Indicator.
CAUTION: ELECTRICAL SHOCK HAZARD. REMOVE ALL POWER CONNECTIONS TO
THE INDICATOR BEFORE SERVICING OR MAKING INTERNAL CONNECTIONS. THE
HOUSING SHOULD ONLY BE OPENED BY AUTHORIZED AND QUALIFIED PERSONNEL,
SUCH AS AN ELECTRICAL TECHNICIAN.
Before making connections to the Relay terminals, remove power from the system. If the system contains
an optional rechargeable battery system, be sure that the ON/CLR Off button is used to fully turn off the
system after removing the AC power plug.
More detailed installation instructions are included with the Discrete I/O kit at the time of purchase.

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1.2 SERVICE FACILITIES
To service an indicator, the service area should meet the following requirements:
Must be protected from electrostatic discharge.
Should be temperature controlled and meet the indicator specifications for temperature
environmental requirements. See specifications for temperature range.
Must be free of vibrations such as fork lift trucks close by, large motors, etc.
Must be free of air currents or drafts from air conditioning/heating ducts, open windows,
people walking by, fans, etc.
Area must be clean and air must not contain excessive dust particles.
Work surface must be stable and level.
Work surface must not be exposed to direct sunlight or radiating heat sources.
1.3 TOOLS AND TEST EQUIPMENT REQUIRED
In order to properly service the Indicator, certain special tools and test items are required in addition to
standard electronic tool kits. These items are listed as follows:
1.3.1 Special Tools and Test Equipment List
1. Ohaus Scale Base.
2. Load Cell Simulator optional.
3. Computer with RS232 Interface for testing the RS232 communications.
4. RS232 Interface cable.
5. Data Printer for use with RS232 communications.
6. ESD work station or mat.

3 Defender 5000 Indicators Service Manual
1.3.2 Standard Tools and Test Equipment List
1. Standard Electronics Tool Kit
2. Digital Voltmeter (DVM), with clip on probes. Input impedance of at least 10 megohms in
the 1 Volt dc position.
3. Soldering Iron, solder and flux remover.
1.4 OVERVIEW OF PARTS AND CONTROLS
1.4.1 TD52P
TABLE 1-1 TD52P PARTS
Item
Description
1
Data Label
2
Front Housing
3
Control Panel
4
Mounting Bracket
5
Screw (4)
6
Adjusting Knob (2)
7
Security Screw
8
Accessory Cover
9
Rear Housing
10
Power Connector
11
RS232 Connector
12
Load Cell Connector
1
2
3
6
9
8
4
5
7
10
11
12
Figure 1-1 TD52P Indicator

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1.4.2 TD52XW TABLE 1-2 TD52XW PARTS
Item
Description
1
Control Panel
2
Front Housing
3
Screw (6)
4
Adjusting knob (2)
5
Rear Housing
6
Mounting Bracket
7
Load Cell Connector
8
Strain Relief for Option
9
Power Cord
10
Strain Relief for Option
3
4
5
6
1
2
7
8
9
Figure 1-2 TD52XW Indicator
10

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1.4.3 MAIN PC BOARD
Figure 1-3 Main PC Board
TABLE 1-3 MAIN PC BOARD
Item
Description
1
IO/Analog/RS232-RS485-USB Device (J11)
2
SD Card (J8)
3
Rechargeable Battery Pack (J9)
4
USB Host/Ethernet (J4)
5
Security Switch (SW1)
6
Load Cell (J12)
7
RS232 (J5)
8
Load Cell (J3)
4
7
2
1
3
5
6
8

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1.5 CONTROL FUNCTIONS
Button
Action
Short press: If the terminal is Off, power on the terminal; if the terminal is On, clear the
data input.
Long press: Power off the terminal.
Short press: Send the current display value to RS232 port in the case where the
"Communication -> RS232 setup->Assignment->Demand" is "On".
Long press: Change the current weighing unit. Press and hold the key to scroll through
the list of enabled units. Release the key to switch to the unit selected.
Short press: Press the key to enter the Library.
Long press: Press and hold this key to change weighing modes. Press and hold the key
to scroll through all weighing modes. Release the key to switch to the mode selected.
Short press: Press the key to enter user profile.
Long press: Press the key to enter user menu.
The soft keys correspond to several icons at the bottom of the display area. These icons
indicate configuration, ID input, accumulate, exit, etc. (available in certain
circumstances).
To enter ‘2’-‘9’, press the numeric button in the mode of numeric input.
To Enter ‘A’, press 2 times in the mode of uppercase input. To
enter ‘Z’, press 5 times in the mode of lowercase input.
To enter ‘0’, press the button in the mode of numeric input. To enter a
space, press the button in the mode of uppercase or lower case input.
To enter '1', press the button in the mode of numeric input. To enter '#'
or '/', press the button in the mode of uppercase input. To enter '@', '_'
or '&', press the button in the mode of lowercase input.
Switch between three input modes, namely, numeric, lowercase and
uppercase input.
To enter '.', press the button in the mode of numeric input. To enter '+' or
'-', press the button in he mode of uppercase or lowercase input.
Short press: When the load on the pan is within the zero range, press this key to set the
display to zero.
Short press: When a tare has been entered and the load on the pan is within the zero
range, press this key to clear the tare value and set the display to zero.
Short press: When a container is on the pan, press this key to store the weight of the
container as the tare value.
Short press: Enter the known weight of a container using the numeric keypad, and then
press this key to establish the preset tare value.
Short press: When a tare has been entered, empty the pan and press this key to clear
the tare value.
Long press: If a preset tare has been entered, press this key to view the preset tare
value.

7 Defender 5000 Indicators Service Manual
1.6 EXTERNAL CONNECTIONS
This section of the manual explains the external connection of the product.
1.6.1 Scale Base with Connector
Ohaus bases with a connector can be attached to the external load cell connector (Figure 1-1, item 12). To
make the connection, plug the base connector onto the external load cell connector. Then rotate the base
connector’s locking ring clockwise. Refer to section 1.7.2 for bases without a connector.
1.6.2 RS232 interface Cable to TD52P
Connect the optional RS232 cable to the RS232 connector (Figure 1-1, item 11).
Pin
Connection
1
N/C
2
TXD
3
RXD
4
N/C
5
GND
6
N/C
7
CTS
8
RTS
9
N/C
1.6.3 AC Power to TD52P
Connect the AC power cord (supplied) to the power receptacle (Figure 1-1, item 10), then connect the AC
plug to an electrical outlet.
1.6.4 AC Power to TD52XW
Connect the AC plug to a properly grounded electrical outlet.
1.6.5 Battery Power
The indicator can be operated on a rechargeable battery pack (not supplied) when AC power is not
available. It will automatically switch to battery operation if there is power
failure or the power cord is removed. The indicator can operate for up to 21
hours on battery power. During battery operation, the battery charge symbol
indicates the battery status. The indicator will automatically turn-off when the
batteries are fully discharged. Find detailed installation information in battery
pack (P/N 30424405) operation manual.
1.7 Internal Connections
Some connections require the housing to be opened.
1.7.1 Opening the Housing
CAUTION: ELECTRICAL SHOCK HAZARD. REMOVE ALL POWER CONNECTIONS TO
THE INDICATOR BEFORE SERVICING OR MAKING INTERNAL CONNECTIONS. THE
HOUSING SHOULD ONLY BE OPENED BY AUTHORIZED AND QUALIFIED PERSONNEL,
SUCH AS AN ELECTRICAL TECHNICIAN.
TD52P
Remove the four Phillips head screws from the rear housing.
Remove the front housing being careful not to disturb the internal connections.
Once all connections are made, reattach the front housing.
Figure 1-4 RS232 Pins

8 Defender 5000 Indicators Service Manual
TD52XW
Remove the four hex head screws from the rear housing.
Open the housing by carefully pulling the front housing forward.
Once all connections are made, reattach the front housing.
The screws should be tightened to 2.5 N•m (20-25 in-lb) torque to ensure a watertight seal.
1.7.2 Scale Base Without Connector
For connecting bases (which do not have the connector) to a TD52P or TD52XW, a cable gland kit (P/N
30379716) is available as an accessory.
Removing the pre-installed Load Cell connector and wiring harness
Before doing the connections, remove the pre-installed Load Cell connector and wiring harness by following
the steps below.
1. Open the housing by carefully pulling the front housing forward.
2. Unplug the white load cell connector from the main PCBA board (red circle).
3. Remove the metal terminal (Figure 1-1, item 12) connector from the rear housing.(green circle)
Installing Cables and Connectors
In order to meet certain electrical noise emission limits and to protect the TD52P and TD52XW from
external influences, it is necessary to install a ferrite core on the load cell cable connected to the terminal.
The ferrite core is included with the terminal.
To install the ferrite, simply route the cable through the center of the core and then take one wrap around
the outside of the core and route the cable through the center again. Either the complete cable or the
individual wires can be wrapped through the ferrite. This should be done as close to the enclosure as
possible. See Figure 1-5.
Figure 1-5
Main Board Wiring Connections
Once the TD52P and TD52XW enclosure is open, connections can be made to the terminal strips on the
main board, as shown in Figure 1-6.

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Figure 1-6
Jumper Connections
The TD52P and TD52XW terminals are designed to support both 2mV/V and 3mV/V load cells from the
same circuitry. A load cell output rating selection jumper is not required.
Figure 1-7 shows the terminal definitions for the analog load cell terminal strip. Note that when using four-
wire load cells, jumpers must be placed between the +Excitation and +Sense terminals and between the
Excitation and Sense terminals.
Figure 1-7 Jumper Connections
After wiring is completed, replace the indicator housing screws. Make sure the liquid-tight connector is
properly tightened.

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1.7.3 RS232 Interface Cable to TD52XW
Pass the optional RS232 cable through the strain relief (Figure 1-2, item 10) and attach it to terminal block
J5 (Figure 1-3, item 7). Tighten the strain relief to maintain a watertight seal.
1.7.4 MICRO SD Card Installation
The SD memory card can be used for additional storage in the Checkweighing and Counting applications.
Figure 1-8 shows the installation of an SD card into the socket on the edge of the TD52P andTD52XW main
board.
Figure 1-8 Sliding an SD Card into the SD Socket (left); SD Card Installed (right)
1.8 TD52XW Rear Housing Orientation
The TD52XW is delivered in the wall mount orientation with the connections exiting below the display. The
rear housing may be reversed so the connections exit above the display when the TD52XW is placed
horizontally on a bench. To reverse the rear housing, remove the four Phillips head screws, carefully rotate
the housing 180°, and reinstall the screws.
Figure 1-9 Wall Mount Configuration
Figure 1-10 Bench Top Configuration
1.9 Mounting Bracket
Attach the bracket to a wall or table using fasteners (not supplied) that are appropriate for the type of
mounting surface. The bracket will accommodate up to 6 mm (1/4”) diameter screws. Locate the mounting
holes as shown in Figure 1-11.

11 Defender 5000 Indicators Service Manual
2 SETTINGS
This section of the manual explains the Menu Structure of the Indicator.
2.1Menu Structure
TABLE 2-1 MENU STRUCTURE
Calibration
Setup
Read Out
Application Mode
Zero
Capacity Unit
Stability
Weighing
Span
Range
Zero Range
Counting
Linearity
Capacity &
Graduation
>|1|< Capacity
Filter Level
Check
GEO
>|1|<Graduation
Auto Zero Track
Percent
>|2|< Capacity
Auto Dim
Dynamic
>|2|<Graduation
Brightness
Reset
Language
Screensaver
Power On Zero
Auto Off
Power On Unit
Base Auto Off
Key Beep
Adjust Contrast
Transaction Counter
Reset
Next Transaction
Password
Reset
Unit
GMP
Communication
Gram(g)
Date
Format
RS232/
2ndRS232/USB
Device*
Configuration
Baud Rate
Kilogram(kg)
Date
Parity
Pound(lb)
Time
Format
Stop Bit
Ounce(oz)
Time
Handshake
Pound:Ounce
(lb:oz)
Project ID
Alt Print CMD
Tonne(t)
Scale ID
Alt Tare CMD
Ton(ton)
Reset
Alt Zero CMD
Custom Unit
Reset
Unit Name
Print Setup
Assignment
Figure 1-11 Mounting Bracket Dimensions

12 Defender 5000 Indicators Service Manual
Unit
GMP
Communication
Factor
Select Template
Exponent
Edit Template
LSD
Edit String
Reset
Reset
RS485*
Configuration
Address
Baud Rate
Parity
Stop Bit
Handshake
Alt Print CMD
Alt Tare CMD
Alt Zero CMD
Reset
Print Setup
Assignment
Select Template
Edit Template
Edit String
Reset
Ethernet*
Configuration
Host Name
MAC Address
Port
Version
DHCP
IP Address
Subnet Mask
Gateway
Primary DNS
Secondary DNS
Alt Print CMD
Alt Tare CMD
Alt Zero CMD
Reset
Print Setup
Assignment
Select Template
Edit Template
Edit String
Reset
Wifi*
Configuration
MAC Address
Search
DHCP Client
IP Address
Subnet Mask
Gateway
Port
Alt Print CMD
Alt Tare CMD
Alt Zero CMD
Reset

13 Defender 5000 Indicators Service Manual
Unit
GMP
Communication
Print Setup
Assignment
Select Template
Edit Template
Edit String
Reset
Bluetooth*
Device name
OHBT_1
MAC Address
00-11-22-33-44-
55
Search Device
BT Base Info
Device name
MAC Address
LFT
Battery
Analog*
Source
None, Displayed
Weight, ABS-
Displayed
Weight, Gross
Weight
Output Type
4-20mA, 0-10V
Zero Value
0(any valid value
below the high
limit)
Full Scale Value
Desired source
value, scale
capacity
Cal Output Zero
Cal Output Full
SD Card
Maintenance
Library
Export Menu
Memory
Mode
Import Menu
Link to
Diagnosis
User
Mode
Service Menu
User Profiles
* Sub- menu for options will be active only when the specific board is installed.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by OHAUS
is under license.
2.2 Menu Navigation
To enter the Main Menu, press the button
from any application home screen.

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Changing Settings
To change a menu setting, navigate to that setting using the following steps:
1. Enter the Menu
From any Application screen, press the button. The Main Menu List appears on the screen.
2. Select the Sub-menu
Scroll to the desired Sub-menu in the Main Menu List using the soft key corresponding to the icon .
Press the soft key corresponding to the icon to display the Sub-menu items.
3. Select the Sub-Menu Item
Scroll to the desired Sub-menu Item using the soft key corresponding to the icon .
Press the soft key corresponding to the icon to view the Sub-menu item’s settings.
4. Select the Setting
Scroll to the desired Setting using the soft key corresponding to the icon .
Press the soft key corresponding to the icon to select the setting.
Press the soft key corresponding to the icon to return to the previous screen.
Press the soft key corresponding to the icon to exit the menu and return to the last active Application
mode.
2.3 Calibration Menu
The TD52 indicator offers three calibration methods:
Zero Calibration, Span Calibration and Linearity Calibration.
NOTES:
1. Make sure that appropriate calibration masses are available before calibration.
2. Make sure that the scale base is level and stable during the entire calibration process.
3. Calibration is unavailable with LFT set to ON.
4. Allow the Indicator to warm up for approximately 5 minutes after stabilizing to room temperature.
5. To abort calibration, press the soft key corresponding to the icon 'X' anytime during the calibration
process.
6. When any selection within the GMP menu is enabled, calibration results are automatically printed.
2.3.1 Zero Calibration
Zero calibration uses one calibration point. The zero calibration point is established with no weight on the
scale. Use this calibration method to adjust for a different pre-load without affecting the span or linearity
calibration.
Calibration procedures:
Long press the button to enter the Main
Menu. Press the soft key corresponding to the icon
to enter the Calibration sub-menu.
Zero Calibration is on the top of the list of Calibration
by default. Just press the soft key corresponding to
the icon to initiate Zero Calibration.

15 Defender 5000 Indicators Service Manual
Clear the pan and then press the soft key
corresponding to the icon .
The message 'Completed' will be displayed on the
screen.
Exit Zero Calibration by pressing the soft key
corresponding to the icon .
To return to the Main Menu, press the soft key
corresponding to the icon .
2.3.2 Span Calibration
Span Calibration uses one point. The span calibration point is established with a calibration mass placed
on the scale.
Note: Span Calibration should be performed after Zero Calibration.
Calibration procedures:
Long press the button to enter the Main
Menu.
Press the soft key corresponding to the icon to
enter the Calibration sub-menu.
Scroll to Span Calibration using the soft key
corresponding to the icon .
Press the soft key corresponding to the icon to
initiate Span Calibration.
Place a calibration mass of the specified weight on
the pan and press the soft key corresponding to the
icon . To change to a different calibration point,
input the value desired, and then place the
corresponding weight on the pan for calibration.
A suggestive message shows on the screen.
The message 'Completed' will be displayed on the
screen.

16 Defender 5000 Indicators Service Manual
Exit Span Calibration by pressing the soft key
corresponding to the icon .
To return to the Main Menu, press the soft key
corresponding to the icon .
Note: Span Calibration should be performed after
Zero Calibration.
2.3.3 Linearity Calibration
Linearity calibration uses 3 calibration points. The full calibration point is established with a weight on the
scale. The mid calibration point is established with a weight equal to half of the full calibration weight on
the scale. The zero calibration point is established with no weight on the scale. The mid calibration points
cannot be altered by the user during the calibration procedure.
Calibration procedures:
Long press the button to enter the Main
Menu.
Press the soft key corresponding to the icon to
enter the Calibration sub-menu.
Scroll to Linearity Calibration using the soft key
corresponding to the icon .
Press the soft key corresponding to the icon to
initiate Linearity Calibration.
Clear the pan and press the soft key corresponding
to the icon .
Put the calibration mass of the specified weight on
the pan, and then press the soft key corresponding
to the icon for confirmation. To change to a
different calibration point, input the value desired,
and then place the corresponding weight on the
pan for calibration.
Put the calibration mass on the pan, and then
press the soft key corresponding to the icon for
confirmation. To change to a different calibration
point, input the value desired, and then place the
corresponding weight on the pan for calibration.
The message 'Completed' will be displayed on the
screen.