OHAUS Adventurer AX124/E User manual

AdventurerTM Balances
Service Manual

TABLE OF CONTENTS
Adventurer ™ Balances Service Manual i Ohaus Corporation www.ohaus.com
Page No.
1 GETTING STARTED .................................................................................................................1
1.1 Introduction..........................................................................................................................1
1.2 Service Facilities..................................................................................................................1
1.3 Tools and Test Equipment Required...................................................................................1
1.3.1 Special Tools.................................................................................................................1
1.3.2 Standard Tools and Test Equipment.............................................................................2
1.4 Specifications ......................................................................................................................2
1.5 Admissible Ambient Conditions...........................................................................................9
1.6 Balance Operation.............................................................................................................10
1.6.1 Overview of the Controls.............................................................................................10
1.6.2 Main Application Screen .............................................................................................11
1.6.3 Principal Functions and Main Menu............................................................................11
1.7 The Load Cell....................................................................................................................12
1.8 Printing ..............................................................................................................................13
1.8.1 Connecting, Configuring and Testing the Printer/Computer Interface ........................13
1.8.2 Output Format.............................................................................................................13
1.8.3 Interface Commands...................................................................................................14
1.9 RS232 (DB9) Pin Connections..........................................................................................16
1.10 The USB Interface.............................................................................................................16
1.11 System Requirements .......................................................................................................16
1.12 USB Connection................................................................................................................16
1.13 Virtual Port Software Installation .......................................................................................17
1.14 USB Input ..........................................................................................................................17
1.14.1 Auto-Print Operation ...................................................................................................17
2 TROUBLESHOOTING.............................................................................................................18
2.1 Troubleshooting.................................................................................................................18
2.1.1 General procedures for Troubleshooting ....................................................................18
2.2 Diagnostic Guide ...............................................................................................................18
2.2.1 Diagnosis ....................................................................................................................18
3 MAINTENANCE PROCEDURES ............................................................................................21
3.1 Preventive Maintenance....................................................................................................21
3.1.1 Preventive Maintenance Checklist..............................................................................21
3.2 Opening the Balance.........................................................................................................21
3.2.1 Removing Adventurer Analytical Housing...................................................................22
3.3 Replacing Adventurer Load Cell........................................................................................29
3.3.1 Replacing Adventurer Type conventional MFR load cell. ...........................................29
3.3.2 Replacing Adventurer Models Block type load cell. .......................................................31
3.4 Replacing Adventurer Main PCBA. ...................................................................................34
3.6 Load cell Removal and Disassembly.................................................................................36
3.6.1 Load Cell Disassembly –Precision Balances.............................................................36
3.6.2 Position Sensor Board Removal/Replacement/Adjustment –Precision.....................40
3.6.3 Main Printed Circuit Board (PCB) Replacement –All Balances .................................42
3.6.4 Load Cell Reassembly –Precision Balances..............................................................42
3.6.5 Removing the InCal Mechanism from InCal Precision Balances................................46
3.6.6 Removing Internal Calibration Weights Components on Load cell.............................48
4 TESTING..................................................................................................................................49
4.1 Test Masses Required.......................................................................................................49
4.2 Operational Test................................................................................................................49
4.3 LCD Display Test...............................................................................................................50
4.4 Performance Test –Precision & Analytical Balances........................................................50
4.4.1 Precision Test –Precision & Analytical Balances.......................................................51
4.4.2 Off-Center Load Test Precision & Analytical Balances...............................................52
4.4.3 Off-Center Load Adjustment for Precision Models......................................................53
4.4.4 Off-Center Load Adjustment for Block Style Models...................................................54
4.4.5 Repeatability Test .......................................................................................................55

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Ohaus Corporation www.ohaus.com ii Adventurer ™ Balances Service Manual
4.4.6 Linearity Test...............................................................................................................57
5 PARTS LISTS & DIAGRAMS..................................................................................................59
5.1 Adventurer Draft Shield .....................................................................................................60
5.2 Adventurer Analytical Type: Housing & Parts (4 decimal balances)..................................61
5.3 Adventurer Precision 3 Decimal InCal Models ..................................................................63
5.4 Adventurer Precision Conventional MFR Load Cell 3 Decimal InCal Model.....................65
5.5 Adventurer Precision 3 Decimal Excal Model....................................................................67
5.6 Adventurer Precision Conventional MFR Load Cell 3 Decimal ExCal Model....................69
5.7 Adventurer Precision 2 and 1 Decimal Incal Balances......................................................71
5.8 Adventurer Precision Conventional MFR Load Cell 2 and 1 Decimal Incal Model............73
5.9 Adventurer Precision 2 and 1 Decimal ExCal Balances....................................................75
5.10 Adventurer Precision Conventional MFR Load Cell 2 and 1 Decimal ExCal Model..........77
5.11 Adventurer Precision AX5202 and AX8201 InCal Balances .............................................79
5.12 Adventurer Precision AX8201 ExCal Balances.................................................................81
APPENDIX A. SERVICE MENU ..................................................................................................83
A.1 Entering the Service Menu ................................................................................................83
A.2 Service Ramp....................................................................................................................84
A.3 Service Software Update...................................................................................................85
A.4 Service 3 Point Linearity Calibration..................................................................................86
A.5 Service 5 Point Linearity Calibration..................................................................................87
A.6 Service Internal Weight Calibration ...................................................................................88
A.7 Service Span Calibration...................................................................................................89
A.8 Service Internal Calibration ...............................................................................................89
A.9 Service Internal Repeatability Test....................................................................................90
A.10 Service Balance Info..........................................................................................................90
A.11 Service Calibration Data....................................................................................................91
APPENDIX B. SOFTWARE SERVICE & REPAIR TOOL INSTRUCTIONS ...............................92
B.1 Software Installation and Software Selection ....................................................................92
B.2 Product Selection ..............................................................................................................93
B.3 To Restore the EEPROM data ..........................................................................................93
B.4 COM Port Configuration ....................................................................................................95
B.5 To Replace a Load Cell.....................................................................................................96
B.6 Install New Main Printed Circuit Board (PCBA).................................................................97
B.7 Update the Software in the Balance..................................................................................98
B.8 Diagnostics........................................................................................................................99
B.9 Incal Weight Mechanism Testing.....................................................................................100

TABLE OF CONTENTS
Adventurer ™ Balances Service Manual iii Ohaus Corporation www.ohaus.com
LIST OF TABLES
TABLE NO. TITLE Page No.
1-1 Specifications: Adventurer Internal and External Calibration............................................2
1-2 Specifications: Adventure OIML Type M Models..............................................................7
1-3 Specifications: Adventurer NTEP Type N Models InCal and External Calibration ..........8
1-4 Adventurer Controls........................................................................................................10
1-5 Adventurer Output Format..............................................................................................13
1-6 Adventurer Interface Command List...............................................................................14
1-7 Adventurer USB Interface Command List.......................................................................17
4-1 Test Masses Required....................................................................................................49
4-2 Tolerances-Precision Models .........................................................................................50
4-3 Tolerances –Analytical Models......................................................................................51
5-1 Adventurer Draft shield...................................................................................................60
5-2 Adventurer Analytical Type: HOUSING & PARTS (4 decimal balances). ......................62
5-3 Adventurer Precision 3 Decimal InCal Model.................................................................64
5-4 Adventurer Precision Conventional MFR Load Cell 3 Decimal InCal Model ..................66
5-5 Adventurer Precision 3 Decimal ExCal Model................................................................68
5-6 Adventurer Precision Conventional MFR Load Cell 3 Decimal ExCal Model.................70
5-7 Adventurer Precision 2 and 1 Decimal InCal Balances ..................................................72
5-8 Adventurer Precision Conventional MFR Load Cell 2 and 1 Decimal InCal Model........74
5-9 Adventurer Precision 2 and 1 Decimal ExCal Balances.................................................76
5-11 Adventurer Precision AX5202 and AX8201 InCal Balances.........................................80
5-12 Adventurer Precision AX8201 ExCal Balances............................................................82
LIST OF ILLUSTRATIONS
FIGURE NO. TITLE Page No.
1-1 Adventurer Controls ........................................................................................................10
1-2 Main Application Screen .................................................................................................11
1-4 Load Cell Assembly ........................................................................................................12
3-1 Analytical Weighing Pan and Wind Ring Attached..........................................................22
3-2 Analytical Weighing Pan and Wind Ring Removed.........................................................22
3-3 EMC Plate Attached........................................................................................................22
3-4 EMC Plate Removed.......................................................................................................22
3-5 Analytical Draft Sheild Screws Location..........................................................................23
3-6 Adventurer Analytical Draft Sheid Assembly...................................................................23
3-7 Adventurer Analytical Balance Only................................................................................23
3-8 Side View of Adventurer Balances..................................................................................24
3-9 Lifting up the back of Adventure top housing..................................................................24
3-10 Sliding Adventurer Top Housing upfront. ......................................................................24
3-11 Location of TFT LCD and Keypad membrane cables...................................................24
3-12 Keypad Membrane Lock and Unlock position...............................................................25
3-13 Keypad membrane cable removed. ..............................................................................25
3-14 TFT LCD cable connectors in lock position and unlock position...................................25
3-15 TFT LCD film cable removed ........................................................................................26
3-16 Latch located at the right corner side of the top housing...............................................26
3-17 Latch located at the right side of the bottom housing....................................................26
3-18 Adventurer balance bottom housing with top housing removed....................................27

TABLE OF CONTENTS
Ohaus Corporation www.ohaus.com iv Adventurer ™ Balances Service Manual
3-19 Adventurer Precision balance with weighing pan..........................................................27
3-20 Adventurer Precision balance with weighing pan removed...........................................28
3-21 Adventurer Precision balance Pan Support removed ...................................................28
3-22 Adventurer Precison Balance Releasing hinges...........................................................29
3-23 Adventurer Precision Balances Load cell cover removed.............................................29
2-24 Load Cell Cable Connecting to Main PCBA Removed..................................................29
3-25 Location of the 3 screws holding the load cell to balance bottom housing....................30
3-26 Conventional MFR cell removed (Notice the different of the bottom housing)..............30
3-27 Adventurer Analytical Load cell metal cover removed ..................................................31
3-28 Cable connecting from load cell to main PCBA.............................................................31
3-29 Load cell cable connecting to Main PCBA Removed....................................................31
3-30 4 screws holding the cell to the balance bottom housing..............................................32
3-31 Block Style load cell removed (Notice the difference of the bottom housing). ..............32
3-32 SG Load cell metal cover attached ...............................................................................32
3-33 SG Load cell metal cover removed...............................................................................32
3-34 SG Load cell cable to main PCBA removed. ................................................................33
3-35 Location of the 4 screws securing Strain Gage load cell to the balance bottom housing
..............................................................................................................................................33
3-36 Strain Gage Load cell removed (Notice the difference of the bottom housing).............33
3-37 Two cables attached to main PCBA..............................................................................34
3-38 Two cables removed from main PCBA .........................................................................34
3-39 Location of the 3 screws securing the Main PCBA to the bottom housing....................34
3-40 Main PCBA removed from bottom housing...................................................................35
3-41 Location of the two screws holding the communication PCBA and the cable linking from
the communication cable to main PCBA...............................................................................35
3-42 Communication PCBA removed. ..................................................................................35
3-43 Service Fixture, screws and washers for Adventure Precision balances (Readability =
0.001g.) PN 923345 .............................................................................................................36
3-44 Service Fixture, screws and washers for Adventurer Precision balances (Readability =
0.01g to 0.1g.) PN 923389....................................................................................................36
3-45 Mounting Adventurer 3 Decimal Service Fixture...........................................................36
3-46 Mounting Adventurer 2 and 1 Decimal Service Fixture.................................................36
3-47 Precision Load Cell top .................................................................................................37
3-48 Precision Load Cell bottom. ..........................................................................................37
3-49 Bent Flexure..................................................................................................................37
3-50 Position Sensor Board ..................................................................................................38
3-51 Contact Board with ribbon cable. ..................................................................................38
3-52 Fine wires connected to the Contact Board, and affixed to Ratio Beam.......................38
3-53 Contact Board taped to Ratio Beam after removal from frame.....................................38
3-54 Hanger ..........................................................................................................................39
3-55 Two screws secure Magnet Half...................................................................................39
3-56 Sideways Motion Stop Plate. .......................................................................................39
3-57 Ratio Beam clearing stop on Up/Down Stop Screw as it is lifted out............................39
3-58 Magnets must be clean.................................................................................................39
3-59 Position Sensor Board. .................................................................................................40
3-60 4.3 LCD attached..........................................................................................................40
3-61 Units showing Over load message................................................................................41
3-62 Adjust position of Sensor Board until Over load does not appear.................................41
3-63 Position Sensor Board. .................................................................................................41

TABLE OF CONTENTS
Adventurer ™ Balances Service Manual v Ohaus Corporation www.ohaus.com
3-64 Installing Ratio Beam, clearing the Up/Down Stop Screw............................................42
3-65. Service Fixture for 3 decimal Precision Load Cell, attached to Hanger, Ratio Beam,
and Load Cell frame..............................................................................................................43
3-66. Service Fixture for 2 and 1 decimal Precision Load Cell, attached to Hanger, Ratio
Beam, and Load Cell frame...................................................................................................43
3-67. Sideways Motion Stop Plate ......................................................................................43
3-68. Two screws secure Magnet Half.................................................................................43
3-69. Contact Board .............................................................................................................43
3-70. Solder points on Position Sensor Board. ....................................................................44
3-71. Precision Load Cell top ...............................................................................................44
3-72. Precision Load Cell bottom. ........................................................................................44
3-73. Ratio Beam Flexures and Vertical Flexure.................................................................44
3-74. Insert the 3 screws to secure Precision Load Cell in Bottom Housing........................45
3-75. When Position Sensor Board shows normal weight, tighten its screws with an Allen
Key........................................................................................................................................45
3-76 Location of the 4 screws holding the weight protection metal plate..............................46
3-77 Location of the two weight retainer ...............................................................................46
3-78 Weight retainer removed...............................................................................................47
3-79 Picture showing InCal weight removed and showing the InCal mechanism.................47
3-80 Location of the two screws holding the weighing arm assembly in place. ....................48
3-81 Weighing arm assembly removed.................................................................................48
4-1 Adventurer LCD boot up screen......................................................................................50
4-2 Analytical and Precision balance Mass Placement Locations for Off-Center Load Test.
..............................................................................................................................................52
4-3 Off-Center Load Adjustments on Adventurer Precision Balance ....................................53
4-4. Off-Center Load Adjustment screw holes on Adventure Precision models...................53
4-5. Using a Needle File to adjust Off Center Load on Block Style Load Cells....................54
5-1. Adventurer Draft Shield.................................................................................................60
5-2. Adventurer Analytical Type: Housing & Parts. (4 decimal balances)............................61
5-3. Adventurer Precision 3 Decimal InCal Model................................................................63
5-4. Conventional MFR Load Cell 3 Decimal InCal Model...................................................65
5.5 Precision Adventurer 3 Decimal EXCal Model................................................................67
5.6 Conventional MFR Load Cell 3 Decimal ExCal Model....................................................69
5.7 Adventurer Precision 2 and 1 Decimal InCal Balances...................................................71
5.8 Conventional MFR Load Cell 2 and 1 Decimal InCal Model ...........................................73
5.9 Precision Adventurer 2 and 1 Decimal ExCal Balances..................................................75
5.10 Conventional MFR Load Cell 2 and 1 Decimal ExCal Model........................................77
5-10 Adventurer Precision Conventional MFR Load Cell 2 and 1 Decimal ExCal Model......78
5.11 Adventurer Precision AX5202 and AX8201 InCal Balances .........................................79
5.12 Adventurer Precision AX8201 ExCal Balances.............................................................81
A-1 Adventurer™ AX Overlay. ..............................................................................................83
A-2 Service Mode Window 1.................................................................................................83
A-3 Service Mode Window 2.................................................................................................84
A-4 Service Ramp .................................................................................................................84
A-5 Service Software Upgrade..............................................................................................85
A-6 Service Software Upgrade Window USB Connection and Software Version. ................85
A-7 Service 3 Point Linearity Calibration...............................................................................86
A-8 Service 5 Point Linearity Calibration...............................................................................87
A-9 Service Internal Weight Calibration.................................................................................88

TABLE OF CONTENTS
Ohaus Corporation www.ohaus.com vi Adventurer ™ Balances Service Manual
A-10 Service Span Calibration. .............................................................................................89
A-11 Service Internal Calibration...........................................................................................89
A-12 Service Internal Repeatability Test...............................................................................90
A-13 Service Balance Info.....................................................................................................90
A-14 Service Calibration Data...............................................................................................91
A-15 Content of Service Calibration Data-example...............................................................91
B-1. Software Selection.........................................................................................................92
B-2. Product Selection...........................................................................................................93
B-3. Restore EEPROM..........................................................................................................94
B-4. Write Image File.............................................................................................................94
B-5. COM Port Configuration. ...............................................................................................95
B-7. Replace Loadcell Tab....................................................................................................96
B-8. Function selection Replace Loadcell............................................................................96
B-9. Replace Main PCBA Tab...............................................................................................97
B-10. Function Selection Replace Main PCB.......................................................................97
B-11. Download Software Tab. ............................................................................................98
B-12. Diagnostics Tab..........................................................................................................99
B-13. Diagnostics Command Testing....................................................................................99

CHAPTER 1 GETTING STARTED
Adventurer ™ Balances Service Manual 1 Ohaus Corporation www.ohaus.com
1 GETTING STARTED
1.1 Introduction
This service manual contains the information needed to perform routine maintenance and service
on the Ohaus Adventurer (AX) Precision and Analytical balances.
Before servicing the balance, you should be familiar with the Instruction Manual which is packed
with every balance.
1.2 Service Facilities
To service a balance, the service area should meet the following requirements:
Should be temperature controlled and meet the balance specifications for temperature
environmental requirements. See specifications for temperature ranges of the various
models.
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.
Use an approved Electro-Static Device.
1.3 Tools and Test Equipment Required
1.3.1 Special Tools
1. Fixture P/N 923345 Corp. Item No. 00923345 for use with 150g to 410g Load Cells.
2. Fixture P/N 923389 Corp. Item No. 00923389 for use with 510g to 4100g Load Cells.

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 2 Adventurer ™ Balances Service Manual
1.3.2 Standard Tools and Test Equipment
1. Digital Voltmeter (DVM) –Input impedance at least 10 megohms in 1 V DC position.
2. Nutdriver, 6mm.
3. Hex or Allen key wrenches, metric.
4. Other assorted hand tools, tweezers, adjustable open wrenches, etc.
5. Soldering iron (50 watt) and solder (rosin core solder, not acid core).
6. Solder remover.
1.4 Specifications
Table 1-1 Specifications: Adventurer Internal and External Calibration
Mars Model:
AX124
AX124/E
AX224
AX224/E
AX324
Capacity
120g
120g
220g
220g
320g
Readability d
0.0001g
Repeatability (std. dev.) (g)
0.0001g
Linearity (g)
±0.0002g
Span Calibration Points (g)
25g, 50g
75g, 100g
25g, 50g
75g,
100g
50g, 100g
150g,
200g
50g,
100g
150g,
200g
100g
200g, 300g
Calibration
Auto-Cal
External
Auto-Cal
External
Auto-Cal
Weighing units
Baht, carat, grain, gram, milligram, mesgal, momme, Newton,
ounce, pennyweight, pound, Tael (Hong Kong), Tael,
(Singapore), Tael (Taiwan), tical, tola, troy ounce, custom (1)
Applications
Weighing, Parts Counting, Percent Weighing, Check Weighing,
Animal Weighing, Formulation, Density Determination,
Totalization, Display Hold
Stabilization time (typical)
≤ 3 seconds
Sensitivity Temperature Drift
(PPM/K)
1.5
Typical Operating Range
USP (u=0.1%,k=2)
0.20 g –
120 g
0.20 g –
120 g
0.20 g –
220 g
0.20 g –
220 g
0.20 g –
320 g
Optimal Operating Range
USP (u=0.1%,k=2)
0.082 g –
120 g
0.082 g –
120 g
0.082 g –
220 g
0.082 g –
220 g
0.082 g –
320 g
Display
Full-Color WQVGA Graphic LCD
Display size
4.3 in / 10.9 cm (diagonal)
Backlight
White LED
Controls
4-wire resistive touch screen + 6 membrane keys
Communication
RS-232, USBx2
Balance power input
12 VDC, 0.5A
Power supply
AC Adapter Input: 100-240 VAC 0.3A 50-60 Hz
AC Adapter Output: 12 VDC 0.84A
Platform size (diameter)
90 mm / 3.5 in
Assembled dimensions
(W x D x H)
350 x 240 x 345 mm
13.8 x 9.5 x 13.6 inch
Shipping dimensions
(W x D x H)
507 x 387 x 531 mm
20.0 x 15.4 x 20.9 inch
Net weight
5.1 Kg / 11.3 lb
Shipping weight
7.8 Kg / 17.2 lb

CHAPTER 1 GETTING STARTED
Adventurer ™ Balances Service Manual 3 Ohaus Corporation www.ohaus.com
Mars Model:
AX223
AX223/E
AX423
AX423/E
AX523
AX523/E
Capacity
220g
220g
420g
420g
520g
520g
Readability d
0.001g
Repeatability (std.
dev.) (g)
0.001g
Linearity (g)
±0.002g
Span Calibration
Points (g)
50g,
100g
150g,
200g
50g, 100g
150g,
200g
100g,
200g
300g,
400g
100g, 200g
300g, 400g
200g, 300g
400g, 500g
200g, 300g
400g, 500g
Calibration
Auto-Cal
External
Auto-Cal
External
Auto-Cal
External
Weighing units
Baht, carat, grain, gram, milligram, mesgal, momme, Newton, ounce,
pennyweight, pound, Tael (Hong Kong), Tael, (Singapore), Tael (Taiwan), tical,
tola, troy ounce, custom (1)
Applications
Weighing, Parts Counting, Percent Weighing, Check Weighing, Animal Weighing,
Formulation, Density Determination, Totalization, Display Hold
Stabilization time
(typical)
≤ 2 seconds
Sensitivity
Temperature Drift
(PPM/K)
3
Typical Operating
Range
USP (u=0.1%,k=2)
2.0 g –
220 g
2.0 g -220
g
2.0 g –
420 g
2.0 g –
420 g
2.0 g –
520 g
2.0 g –520 g
Optimal Operating
Range
USP (u=0.1%,k=2)
0.82 g -
220 g
0.82 g -
220 g
0.82 g -
420 g
0.82 g -420
g
0.82 g –
520 g
0.82 g –
520 g
Display
Full-Color WQVGA Graphic LCD
Display size
4.3 in / 10.9 cm (diagonal)
Backlight
White LED
Controls
4-wire resistive touch screen + 6 membrane keys
Communication
RS-232, USBx2
Balance power input
12 VDC, 0.5A
Power supply
AC Adapter Input: 100-240 VAC 0.3A 50-60 Hz
AC Adapter Output: 12 VDC 0.84A
Platform size
(diameter)
130 mm/5.1 in
Assembled
dimensions
(W x D x H)
350 x 240 x 345 mm
13.8 x 9.5 x 13.6 inch
Shipping dimensions
(W x D x H)
507 x 387 x 531 mm
20.0 x 15.4 x 20.9 inch
Net weight
5.8Kg/12.8lb
5.6Kg/12.4lb
5.8Kg/12.8lb
5.6Kg/12.4lb
5.8Kg/12.8lb
5.6Kg/12.4lb
Shipping weight
8.5Kg/18.8lb
8.3Kg/18.3lb
8.5Kg/18.8lb
8.3Kg/18.3lb
8.5Kg/18.8lb
8.3Kg/18.3lb

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 4 Adventurer ™ Balances Service Manual
Mars Model:
AX622
AX622/E
AX1502
AX1502/E
AX2202
AX2202/E
AX4202
AX4202/E
AX5202
Capacity
620g
620g
1520g
1520g
2200g
2200g
4200g
4200g
5200g
Readability d
0.01g
Repeatability (std.
dev.) (g)
0.01g
Linearity (g)
±0.02g
Span Calibration
Points (g)
300g,
400g
500g,
600g
300g,
400g
500g,
600g
500g
1000g,
1500g
500g
1000g,
1500g
500g,
1000g
1500g,
2000g
500g,
1000g
1500g,
2000g
1000g,
2000g
3000g,
4000g
1000g,
2000g
3000g,
4000g
2000g,
3000g
4000g,
5000g
Calibration
Auto-
Cal
External
Auto-Cal
External
Auto-Cal
External
Auto-Cal
External
Auto-
Cal
Weighing units
Baht, carat, grain, gram, kilogram, mesgal, momme, Newton, ounce, pennyweight, pound, Tael (Hong
Kong), Tael, (Singapore), Tael (Taiwan), tical, tola, troy ounce, custom (1)
Applications
Weighing, Parts Counting, Percent Weighing, Check Weighing, Animal Weighing, Formulation, Density
Determination, Totalization, Display Hold
Stabilization time
(typical)
≤ 1.5 seconds
Sensitivity
Temperature Drift
(PPM/K)
3
1.9
Typical Operating
Range
USP(u=0.1%,k=2)
20.0 g -
620 g
20.0 g -
620 g
20.0 g -
1520 g
20.0 g -
1520 g
20.0 g -
2200 g
20.0 g -
2200 g
20.0 g -
4200 g
20.0 g -
4200 g
20.0 g -
5200 g
Optimal Operating
Range
USP(u=0.1%,k=2)
8.2 g -
620 g
8.2g -
620 g
8.2 g -
1520 g
8.2 g -
1520 g
8.2 g -
2200 g
8.2 g -
2200 g
8.2 g -
4200 g
8.2 g -
4200 g
8.2 g -
5200 g
Display
Full-Color WQVGA Graphic LCD
Display size
4.3 in / 10.9 cm (diagonal)
Backlight
White LED
Controls
4-wire resistive touch screen + 6 membrane keys
Communication
RS-232, USBx2
Balance power
input
12 VDC, 0.5A
Power supply
AC Adapter Input: 100-240 VAC 0.3A 50-60 Hz
AC Adapter Output: 12 VDC 0.84A
Platform size
175 x 195 mm / 6.9 x 7.7 in
Assembled
dimensions
(W x D x H)
350 x 240 x 105 mm
13.8 x 9.5 x 4.2 inch
Shipping
dimensions
(W x D x H)
557 x 392 x 301 mm
22.0 x 15.5 x 11.9 inch
Net weight
4.6Kg/
10.2lb
3.9Kg/
8.6lb
4.6Kg/
10.2lb
3.9Kg/
8.6lb
4.6Kg/
10.2lb
3.9K/
8.6lb
4.6Kg/
10.2lb
3.9Kg/
8.6lb
3.8Kg/
8.4lb
Shipping weight
6.5Kg/
14.4b
5.8Kg/
12.8b
6.5Kg/
14.4b
5.8Kg/
12.8b
6.5Kg/
14.4b
5.8Kg/
12.8b
6.5Kg/
14.4b
5.8Kg/
12.8b
5.7Kg/
12.6lb

CHAPTER 1 GETTING STARTED
Adventurer ™ Balances Service Manual 5 Ohaus Corporation www.ohaus.com
Mars Model:
AX4201
AX4201/E
AX8201
AX8201/E
Capacity
4200g
4200g
8200g
8200g
Readability d
0.1g
Repeatability (std. dev.) (g)
0.1g
Linearity (g)
±0.2g
Span Calibration Points (g)
1000g, 2000g
3000g, 4000g
1000g, 2000g
3000g, 4000g
2000g, 4000g
6000g, 8000g
2000g, 4000g
6000g, 8000g
Calibration
Auto-Cal
External
Auto-Cal
External
Weighing units
Baht, carat, grain, gram, kilogram, mesgal, momme, Newton, ounce, pennyweight,
pound, Tael (Hong Kong), Tael, (Singapore), Tael (Taiwan), tical, tola, troy ounce,
custom (1)
Applications
Weighing, Parts Counting, Percent Weighing, Check Weighing, Animal Weighing,
Formulation, Density Determination, Totalization, Display Hold
Stabilization time (typical)
≤ 1.5 seconds
Sensitivity Temperature
Drift (PPM/K)
9
Typical Operating Range
USP (u=0.1%,k=2)
200.0 g –4200 g
200.0 g –4200 g
200.0 g –8200 g
200.0 g –8200 g
Optimal Operating Range
USP (u=0.1%,k=2)
82 g - 4200 g
82 g - 4200 g
82 g –8200 g
82 g - 8200 g
Display
Full-Color WQVGA Graphic LCD
Display size
4.3 in / 10.9 cm (diagonal)
Backlight
White LED
Controls
4-wire resistive touch screen + 6 membrane keys
Communication
RS-232, USBx2
Balance power input
12 VDC, 0.5A
Power supply
AC Adapter Input: 100-240 VAC 0.3A 50-60 Hz
AC Adapter Output: 12 VDC 0.84A
Platform size
175 x 195 mm / 6.9 x 7.7 in
Assembled dimensions
(W x D x H)
350x240x105 mm
13.8x9.5x4.2inch
Shipping dimensions
(W x D x H)
557x392x301 mm
22.0x15.5x11.9inch
Net weight
4.6Kg / 10.2lb
3.9Kg / 8.6lb
3.8Kg / 8.4lb
3.4Kg / 7.5lb
Shipping weight
6.5Kg / 14.4b
5.8Kg / 12.8b
5.7Kg / 12.6lb
5.3Kg / 11.6lb

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 6 Adventurer ™ Balances Service Manual
Mars Model:
AX422
AX422/E
AX822
AX822/E
AX2201
AX2201/E
Capacity
420g
420g
820g
820g
2200g
2200g
Readability d
0.01g
0.1g
Repeatability (std.
dev.) (g)
0.01g
0.1g
Linearity (g)
±0.02g
0.1g
Span Calibration
Points (g)
100g,
200g
300g,
400g
100g,
200g
300g,
400g
200g,
400g
600g,
800g
200g, 400g
600g, 800g
500g, 1000g
1500g,
2000g
500g, 1000g
1500g,
2000g
Calibration
Auto-Cal
External
Auto-Cal
External
Auto-Cal
External
Weighing units
Baht, carat, grain, gram, kilogram, mesgal, momme, Newton, ounce,
pennyweight, pound, Tael (Hong Kong), Tael, (Singapore), Tael (Taiwan), tical,
tola, troy ounce, custom (1)
Applications
Weighing, Parts Counting, Percent Weighing, Check Weighing, Animal Weighing,
Formulation, Density Determination, Totalization, Display Hold
Stabilization time
(typical)
≤ 1.5 seconds
Sensitivity
Temperature Drift
(PPM/K)
3
Typical Operating
Range
USP (u=0.1%,k=2)
20.0 g -
420 g
20.0 g -
420 g
20.0 g -
820 g
20.0 g -820
g
200.0 g –
2200 g
200.0 g –
2200 g
Optimal Operating
Range
USP (u=0.1%,k=2)
8.2 g -
420 g
8.2 g -420
g
8.2 g -
820 g
8.2 g - 820
g
82 g - 2200 g
82 g - 2200 g
Display
Full-Color WQVGA Graphic LCD
Display size
4.3 in / 10.9 cm (diagonal)
Backlight
White LED
Controls
4-wire resistive touch screen + 6 membrane keys
Communication
RS-232, USBx2
Balance power input
12 VDC, 0.5A
Power supply
AC Adapter Input: 100-240 VAC 0.3A 50-60 Hz
AC Adapter Output: 12 VDC 0.84A
Platform size
(diameter)
175 x 195 mm / 6.9 x 7.7 in
Assembled
dimensions
(W x D x H)
350x240x105 mm
13.8x9.5x4.2inch
Shipping dimensions
(W x D x H)
557x392x301 mm
22.0x15.5x11.9inch
Net weight
4.6Kg/
10.2lb
3.9Kg/
8.6lb
4.6Kg/
10.2lb
4.6Kg/
10.2lb
4.6Kg/
10.2lb
4.6Kg/
10.2lb
Shipping weight
6.5Kg/
14.4b
5.8Kg/
12.8b
6.5Kg/
14.4b
6.5Kg/
14.4b
6.5Kg/
14.4b
6.5Kg/
14.4b

CHAPTER 1 GETTING STARTED
Adventurer ™ Balances Service Manual 7 Ohaus Corporation www.ohaus.com
Table 1-2 Specifications: Adventure OIML Type M Models
Mars MODEL
AX124M
AX224M
AX324M
AX223M
AX423M
AX523M
AX1502M
AX2202M
AX4202M
AX5202M
AX8201M
Max
120g
220g
320g
220g
420g
520g
1520g
2200g
4200g
5200g
8200g
Min
0.01g
0.01g
0.01g
0.02g
0.02g
0.02g
0.5g
0.5g
0.5g
0.5g
5g
d=
0.0001g
0.001g
0.01g
0.1g
e=
0.001g
0.01g
0.1g
1g
Approval Class
I
II
Repeatability
(std. dev.) (g)
0.0001g
0.001g
0.01g
0.1g
Linearity (g)
±0.0002g
±0.002g
±0.02g
± 0.2g
Span Calibration
Points (g)
25g, 50g
75g,
100g
50g,
100g
150g,
200g
100g
200g,
300g
50g,
100g
150g,
200g
100g,
200g
300g,
400g
200g,
300g
400g,
500g
500g
1000g,
1500g
500g,
1000g
1500g,
2000g
1000g,
2000g
3000g,
4000g
2000g,
3000g
4000g,
5000g
2000g,
4000g
6000g,
8000g
Calibration
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Auto-Cal
Weighing units
milligram, gram, carat
kilogram, gram, carat
Applications
Weighing, Parts Counting, Percent Weighing, Check Weighing, Animal Weighing, Formulation, Density
Determination, Totalization, Display Hold
Stabilization time
(typical)
≤3 seconds
≤2 seconds
≤1.5 seconds
Sensitivity
Temperature Drift
(PPM/K)
1.5
3
3
1.9
Typical Operating
Range USP
(u=0.1%,k=2)
0.20 g –
120 g
0.20 g –
220 g
0.20 g –
320 g
2.0 g –
220g
2.0 g -
420 g
2.0 g –
520 g
20.0 g –
1520 g
20.0 g –
2200 g
20.0 g –
4200 g
20.0 g –
5200 g
200.0 g –
8200 g
Optimal Operating
Range USP
(u=0.1%,k=2)
0.082 g –
120 g
0.082 g –
220 g
0.082 g –
320 g
0.82 g –
220 g
0.82 g –
420 g
0.82 g –
520 g
8.2 g –
1520 g
8.2 g –
2200 g
8.2 g –
4200 g
8.2 g –
5200 g
82 g –
8200 g
Display
Full-Color WQVGA Graphic LCD
Display size
4.3 in / 10.9 cm (diagonal)
Backlight
White LED
Controls
4-wire resistive touch screen + 6 membrane keys
Communication
RS-232, USBx2
Balance power input
12 VDC, 0.5A
Power supply
AC Adapter Input: 100-240 VAC 0.3A 50-60 Hz
AC Adapter Output: 12 VDC 0.84A
Platform size
(diameter)
90 mm / 3.5 in
130 mm / 5.1 in
175x195 mm / 6.9x7.7 in
Assembled
dimensions
(W x D x H)
350x240x345 mm
13.8x9.5x13.6 inch
350x240x345 mm
13.8x9.5x13.6 inch
350x240x105 mm
13.8x9.5x4.2 inch
Shipping dimensions
(W x D x H)
507x387x531 mm
20.0x15.4x20.9 inch
507x387x531 mm
20.0x15.4x20.9 inch
557x392x301 mm
22.0x15.5x11.9 inch
Net weight
5.1 Kg / 11.3 lb
5.8 Kg / 12.8 lb
4.6 Kg / 10.2 lb
3.8 Kg / 8.4 lb
Shipping weight
7.8 Kg / 17.2 lb
8.5 Kg / 18.8 lb
6.5 Kg / 14.4 lb
5.7 Kg / 12.6 lb
Note: M=OIML Approved

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 8 Adventurer ™ Balances Service Manual
Table 1-3 Specifications: Adventurer NTEP Type N Models InCal and External Calibration
Mars Model
AX224N
AX223N/E
AX423N
AX 423N/E
AX523N/E
AX622N/E
AX1502N/E
AX2202N/E
AX4202N/E
AX8201N/E
Max
220g
220g
420g
420g
520g
620g
1520g
2200g
4200g
8200g
Min
0.01g
0.02g
0.02g
0.02g
0.02g
0.5g
0.5g
0.5g
0.5g
5g
d=
0.0001g
0.001g
0.01g
0.1g
e=
0.001g
0.01g
0.1g
1g
Approval Class
I
II
Repeatability
(std. dev.) (g)
0.0001g
0.001g
0.01g
0.1g
Linearity (g)
±0.0002g
±0.002g
±0.02g
±0.2g
Span Calibration
Points (g)
50g, 100g
150g,
200g
50g, 100g
150g,
200g
100g,
200g
300g,
400g
100g, 200g
300g, 400g
200g, 300g
400g, 500g
300g, 400g
500g, 600g
500g
1000g,
1500g
500g, 1000g
1500g, 2000g
1000g, 2000g
3000g, 4000g
2000g,
4000g
6000g,
8000g
Calibration
Auto-Cal
External
Auto-Cal
External
External
External
External
External
External
External
Weighing units
gram, milligram, carat, pennyweight,
grain, ounce, troy ounce
gram, kilogram, carat, pennyweight,
grain, pound, ounce, troy ounce
Applications
Weighing, Parts Counting, Percent Weighing, Check Weighing, Animal Weighing, Formulation, Density Determination, Totalization, Display
Hold
Stabilization time
(typical)
≤3
seconds
≤2 seconds
≤1.5 seconds
Sensitivity
Temperature
Drift (PPM/K)
1.5
3
3
9
Typical
Operating Range
USP
(u=0.1%,k=2)
0.20g –
220 g
2.0 g –
220 g
2.0 g –
420 g
2.0 g –
420 g
2.0 g –
520 g
20.0 g –
620 g
20.0 g –
1520 g
20.0 g –
2200 g
20.0 g –
4200 g
200.0 g –
8200g
Optimal
Operating Range
USP
(u=0.1%,k=2)
0.082 g –
220 g
0.82 g –
220 g
0.82 g –
420 g
0.82 g –
420 g
0.82 g –
520 g
8.2 g –
620 g
8.2 g –
1520 g
8.2 g –
2200 g
8.2 g –
4200 g
82 g –
8200 g
Display
Full-Color WQVGA Graphic LCD
Display size
4.3 in / 10.9 cm (diagonal)
Backlight
White LED
Controls
4-wire resistive touch screen + 6 membrane keys
Communication
RS-232, USBx2
Balance power
input
12 VDC, 0.5A
Power supply
AC Adapter Input: 100-240 VAC 0.3A 50-60 Hz
AC Adapter Output: 12 VDC 0.84A
Platform size
(diameter)
90 mm / 3.5 in
130 mm / 5.1 in
175x195 mm / 6.9x7.7 in
Assembled
dimensions
(W x D x H)
350x240x105 mm
13.8x9.5x4.2 inch
Shipping
dimensions
(W x D x H)
557x392x301 mm
22.0x15.5x11.9 inch
Net weight
5.1 Kg /
11.3 lb
5.6 Kg /
12.4 lb
5.8 Kg /
12.8 lb
5.6 Kg / 12.4 lb
3.9 Kg / 8.6 lb
3.4 Kg /
7.5 lb
Shipping weight
7.8 Kg /
17.2 lb
8.3 Kg /
18.3 lb
8.5 Kg /
18.8 lb
8.3 Kg / 18.3 lb
5.8 Kg / 12.8 lb
5.3 Kg /
11.6 lb
Note: N = NTEP Approved

CHAPTER 1 GETTING STARTED
Adventurer ™ Balances Service Manual 9 Ohaus Corporation www.ohaus.com
1.5 Admissible Ambient Conditions
Ambient conditions
Indoor use only
Altitude: Up to 2000 m
Specified Temperature range: 10°C to 30°C
Humidity: maximum relative humidity 80 % for temperatures up to 30°C
decreasing linearly to 50% relative humidity at 40°C
Mains supply voltage fluctuations: up to ±10% of the nominal voltage
Installation category II
Pollution degree: 2
Materials
Bottom Housing; die-cast Aluminum, Painted
Top Housing: Plastic (ABS)
Weighing Platforms: 18/10 stainless steel
Draft Shield: Glass, plastic (ABS)
Feet: Plastic (ABS)

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 10 Adventurer ™ Balances Service Manual
1.6 Balance Operation
OPERATION
1.6.1 Overview of the Controls
This equipment utilizes a touch-sensitive display with Touch areas and Buttons to control the
equipment’s functions.
CONTROLS
Figure 1-1 Adventurer Controls.
Table 1-4 Adventurer Controls.
Button
Action
Short Press (if powered Off): Turns on the scale
Long Press (if powered On): Turns off the scale
Note: The balance will automatically power on when power is connected.
Short Press: Prints the present data to a printer or a computer.
Short Press: Perform Zero operation
Short Press: Perform Calibration operation
Short Press: Perform Tare operation

CHAPTER 1 GETTING STARTED
Adventurer ™ Balances Service Manual 11 Ohaus Corporation www.ohaus.com
1.6.2 Main Application Screen
Figure 1-2 Main Application Screen
1.6.3 Principal Functions and Main Menu
Weighing: Press Zero to set the display to zero. Place an item on the pan. Display indicates
gross weight.
Taring: With no load on the pan, press Zero to set the display to zero. Place an empty
container on the pan and press Tare. Add material to the container and its net weight
is displayed. Remove container and container’s weight appears as a negative number.
Press Tare to clear.
Zero: Press Zero to zero the balance
1.6.3.1 Menu and Screen Navigation
Touch Menu to open the menu list.
Calibration:
Touch to view calibration options.
Balance Setup:
Touch to view balance settings.
Weighing Units:
Touch to view weighing units.
Data Maintenance:
Touch to view data maintenance settings.
GLP and GMP Data:
Insert user data for traceability.
Factory Reset:
Touch to do a Factory reset of menu settings.
Communication:
Touch to view COM Device Settings and Print Settings.
Lockout:
Touch to view lockout options.
Application
Instructional Messages
Stability (*), Net (NET),
Gross (G) and/or center
of zero (>0<) indicators
Reference Fields
Application Buttons:
Functions vary by
application
Result Field:
Information varies by
application
Touch gto change unit
Capacity and readability

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 12 Adventurer ™ Balances Service Manual
1.7 The Load Cell
Figure 1-4 illustrates a typical Magnetic Force Restoration (MFR) Load Cell.
The force of a weight placed on the Weighing Pan moves the Hanger which is guided by the
Upper and Lower Flexure Arms. The Load Flexure transfers the force vertically to the Ratio Beam.
The Ratio Beam Flexures form a pivot for the Ratio Beam. When the Ratio Beam is moved, the
Force Coils mounted on the Ratio Beam are moved. The Force Coils are located in the magnetic
field created by the Permanent Magnets. The magnetic forces are affected by temperature. A
Temperature Sensor is attached near the magnets to measure the temperature and allow the
electronics to compensate for the changes in temperature.
Operation
A mass placed on the Pan applies a downward force to the Load Flexure by means of the Hanger.
The Load Flexure moves one end of the Ratio Beam which pivots, moving the Force Coil up into
the air gap of the Magnet. The Force Coils are located in the field of the Permanent Magnets. The
movement of the Vane (which is connected to the Ratio Beam) is detected by the Position Sensor.
The Position Sensor contains a sender and receiver. When the Vane moves, the amount of light
sent to the receiver also changes. The change in the position of the Sensor Vane is measured and
used along with the Temperature Sensor signal to adjust the current in the Force Coils. The
current in the Force Coils produces a magnetic field which restores the Ratio Beam to its normal
position.
Figure 1-4. Load Cell Assembly.
Ratio Beam
Flexure
Vertical
Flexure
Top Bracket
Hanger
Bottom Flexure Arm
Flexure
Magnet
Printed Circuit
Board
Temperature
Sensor
Position
Sensor
Vane
Force
Coils
Ratio
Beam
Counter
Weight
Upper Flexure Arm
Pan