OHAUS ST300, Service Manual, Page: 5 / 29

CHAPTER 1 GETTING STARTED
Starter Series Portable Meter Service Manual 1-1 Ohaus Corporation www.ohaus.com
1.1 INTRODUCTION
This service manual contains the information needed to perform routine maintenance and
service on the Ohaus Starter ST300, ST300C, ST300D and ST400D Series portable meters.
Familiarity with the meter
’s Instruction Manual is assumed. The contents of this manual are
contained in five chapters:
Chapter 1 Getting Started
– Contains information on service facilities, tools and test
equipment, specifications, and the mechanical and electronic functions of the meter.
Chapter 2 Maintenance Procedures
– Contains preventive maintenance procedures and
disassembly, repair and replacement procedures.
Chapter 3 Reset to factory settings
–
Explains procedures for resetting the meter to
factory default settings.
Chapter 4 Drawings and Parts
Lists
– Contains exploded views of Starter ST300,
St300C, ST300D and ST400D portable meters identifying all serviceable components.
1.2 DEFINITION OF SIGNAL WORDS 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.
Signal Words
CAUTION
For a hazardous situation with low risk, resulting in damage to the device or
the property or in loss of data, or injuries if not avoided.
Attention For important information about the product.
Note For useful information about the product.
Warning Symbols
General Hazard
Electrostatic discharge sensitive