OHAUS Scout pro User manual

SERVICE MANUAL
SCOUT® PRO BALANCES
Ohaus Corporation 19A Chapin Road, P O Box 2033, Pine Brook, NJ 07058-2033 [phone]

SERVICE MANUAL
SCOUT® PRO BALANCES
The information ontained in this manual is believed to be a urate at the time of publi ation, but Ohaus
Corporation assumes no liability arising from the use or misuse of this material. Reprodu tion of this
material is stri tly prohibited.
Material in this manual is subje t to hange.
© Copyright 2003 Ohaus Corporation, all rights reserved.
® Registered trademark of Ohaus Corporation.

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TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION
1.1 Introdu tion .............................................................................................................1-1
1.2 Servi e Fa ilities .....................................................................................................1-1
1.3 Tools and Test Equipment Required.......................................................................1-2
1.3.1 Spe ial Tools and Test Equipment List ............................................................. 1-2
1.3.2 Standard Tools and Test Equipment List ...........................................................1-2
1.4 Test Masses Required ............................................................................................ 1-2
1.5 Spe ifi ations ..........................................................................................................1-3
CHAPTER 2 DIAGNOSIS
2.1 Troubleshooting ......................................................................................................2-1
2.2 Diagnosti Guide.....................................................................................................2-1
2.2.1 Diagnosis........................................................................................................... 2-1
2.3 Error Codes .............................................................................................................2-4
CHAPTER 3 REPAIR PROCEDURES
3.1 Repair Pro edures ..................................................................................................3-1
3.1.1 Cover Removal .................................................................................................. 3-1
3.1.2 Printed Cir uit Board Repla ement ...................................................................3-2
3.1.3 Transdu er Repla ement ..................................................................................3-4
CHAPTER 4 TESTING
4.1 Testing ....................................................................................................................4-1
4.1.1 Operation Test ...................................................................................................4-1
4.1.2 Segment Display Test........................................................................................ 4-1
4.2 Performan e Tests ..................................................................................................4-1
4.2.1 Repeatability Test ..............................................................................................4-2
4.2.2 Off-Center Load Test ..........................................................................................4-3
4.2.3 Linearity Test .....................................................................................................4-3
4.3 Down Stop Adjustment ............................................................................................4-4
CHAPTER 5 DRAWINGS AND PARTS LISTS
5.1 Drawings .................................................................................................................5-1
5.2 Parts Lists................................................................................................................ 5-3
APPENDIX A SERVICE TOOL INSTRUCTIONS
A. Servi e Tools Instru tions ...................................................................................... A-1
A.1 Requirements for S out Pro Tools ......................................................................... A-1
A.2 Software Installation ............................................................................................... A-1
A.3 Hardware Installation ............................................................................................. A-1
A.4 Spe ial Instru tions for USB Interfa e .................................................................... A-2
A.5 Using Configtool.Exe ............................................................................................. A-3
A.6 Final Servi e Calibration........................................................................................ A-5
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LIST OF TABLES
TABLE NO. TITLE
1-1 Calibration Points ................................................................................................. 1-2
1-2 Spe ifi ations .......................................................................................................1-3
2-1 Diagnosti Guide .................................................................................................. 2-2
2-2 Error Codes ..........................................................................................................2-4
4-1 Types of Performan e Tests .................................................................................4-1
4-2 Test Masses .........................................................................................................4-3
4-3 Test Mass Values ................................................................................................. 4-5
4-4 Transdu er Adjustment Toleran es ......................................................................4-5
5-1 Repla ement Parts List ........................................................................................5-3
LIST OF ILLUSTRATIONS
FIGURE TITLE
3-1 Shipping Lo k.......................................................................................................3-1
3-2 Bottom of Balan e ................................................................................................ 3-1
3-3 Printed Cir uit Board removal...............................................................................3-2
3-4 Transdu er Removal ............................................................................................3-4
4-1 LCD Full Display ..................................................................................................4-1
4-2 Transdu er Front View - Down Stop Adjustment .................................................. 4-4
5-1 S out Pro Exploded View..................................................................................... 5-2
A-1 S rew and Housing Removal .............................................................................. A-2
A-2 Conne tor J3 Lo ation......................................................................................... A-2
A-3 Conne tor J3 Shorted .......................................................................................... A-2
A-4 S reen 1 .............................................................................................................. A-3
A-5 S reen 2 .............................................................................................................. A-4
A-6 S reen 3 .............................................................................................................. A-4
A-7 S reen 4 .............................................................................................................. A-5
B-1 IC U9 Conne tions .............................................................................................. B-2
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APPENDIX B FACTORY CALIBRATIONS
B. Fa tory Calibrations ............................................................................................... B-1
B.1 Servi e Calibration................................................................................................. B-1
B.2 Fa tory Calibration ................................................................................................. B-3
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1-1
CHAPTER 1 INTRODUCTION
1 1 INTRODUCTION
This servi e manual ontains the information needed to perform routine maintenan e and servi e on
the Ohaus S out ® Pro Balan es. The ontents of this manual is ontained in five hapters and are
listed as follows:
Chapter 1 Introduction - Contains information regarding servi e fa ilities, tools, test equipment,
alibration masses and spe ifi ations.
Chapter 2 Diagnosis - Contains a diagnosti guide for troubleshooting problems and error ode
tables.
Chapter 3 Repair Procedures - Contains disassembly/assembly and repla ement pro edures.
Chapter 4 Testing - Contains an operational test, a segment display test and performan e tests.
Chapter 5 Drawings and Parts Lists - Contains an exploded view drawing and a parts list.
Before servi ing the balan e, you should be familiar with the Instru tion Manual whi h is pa ked with
every balan e. The pro edures in this manual assumes the te hni ian performing them has a working
knowledge of the use of standard hand tools and the repair of pre ision instruments.
1 2 SERVICE FACILITIES
To servi e the S out® Pro balan es, the servi e area should meet the following requirements:
 Should be temperature ontrolled and meet the balan e spe ifi ations for temperature
environmental requirements. See spe ifi ations for temperature ranges of the various
models.
 Must be free of vibrations su h as fork lift tru ks lose by, large motors, et .
 Must be free of air urrents or drafts from air onditioning/heating du ts, open windows,
people walking by, fans, et .
 Area must be lean and air must not ontain ex essive dust parti les.
 Work surfa e must be stable and level.
 Work surfa e must not be exposed to dire t sunlight or radiating heat sour es.

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CHAPTER 1 INTRODUCTION
1 4 TEST MASSES REQUIRED
The masses required to test the S out Pro balan es must meet or ex eed the requirements of ASTM
Class 4 Toleran e. The alibration points are listed in Table 1-1.
TABLE 1-1. CALIBRATION POINTS
CAPACITY SPAN CAL POINT LINEARITY CAL POINTS
200g 200g 100g, 200g
400g 200g 200g, 400g
600g 300g 300g, 600g
2000g 2000g 1000g, 2000g
4000g 4000g 2000g, 4000g
6000g 6000g 3000g, 6000g
1 3 TOOLS AND TEST EQUIPMENT REQUIRED
In order to properly servi e the S out Pro balan es, ertain Ohaus spe ial tools and test items are
required in addition to standard ele troni tool kits. These items are listed as follows:
1 3 1 Special Tools and Test Equipment List
1. Alternate voltage Power Adapter if lo al power requirements do not mat h Balan e
Adapter voltage ratings.
2. S out Pro RS232 option PN 71147376.
3. A PC running Mi rosoft Windows NT 4.0 or later, or Mi rosoft Windows 98 or later.
3. S out Pro instru tion manual.
4. S out Pro Tools.zip.
5. Set of Feeler gauges ranging from 0.40mm/0.16in. to 0.65mm/0.026in.
6. Mi ro sized alligator lip.
1.3.2 Standard Tools and Test Equipment List
1. Standard Ele troni s Tool Kit.
2. Digital Voltmeter (DVM) Input impedan e of at least 10 megohms in the 1 Volt d position.
3. Masses totaling up to 6000 grams are required. Ohaus makes various alibration sets
available. Please onta t your nearest Ohaus dealer for further details.

1-3
CHAPTER 1 INTRODUCTION
1 5 SPECIFICATIONS
Spe ifi ations for the S out Pro balan es are listed in Table 1-2. When a balan e has been servi ed,
it must meet the spe ifi ations listed in the table. Before servi ing the balan e, determine what
spe ifi ations are not met.
TABLE 1-2. SPECIFICATIONS
Capa ity (g) 200 400 400 400 2000 4000 6000
Readability (g) 0.01 0.1
Repeatability (Std. Dev.) (g) 0.01 0.1
Off Center Loading (g) ±0.01 ±0.1
Linearity (g) ±0.01 ±0.1
Tare range To apa ity by subtra tion
Over Range Capa ity Capa ity + 90d
Stabilization Time 3 se onds
Operating Temp. Range 50° to 104° F/10° to 40° C
Power Requirements AC Adapter (in luded) 4 AA Batteries (not in luded)
Item Numbers SPx202 SPx402 SPx401 SPx601 SPx2001 SPx4001 SPx6000

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CHAPTER 1 INTRODUCTION