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Chapter 7
Servicing
This chapter explains how to replace the Model 43i Trace Level-Enhanced
subassemblies. It assumes that a subassembly has been identified as
defective and needs to be replaced.
For fault location information refer to the "Preventive Maintenance"
chapter and the "Troubleshooting" chapter in this manual.
The service mode, described in the "Operation" chapter, includes
parameters and functions that are useful when making adjustments or
diagnosing problems.
For additional service assistance, see "Service Locations" at the end of this
chapter.
Read the safety precautions before beginning any procedures in this
Safety
chapter.
Precautions
WARNING The service procedures in this manual are restricted to qualified
representatives.
▲
If the equipment is operated in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
▲
CAUTION Carefully observe the instructions in each procedure.
▲
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground antistatic wrist strap must
be worn while handling any internal component (Figure 7–1). If an
antistatic wrist strap is not available, be sure to touch a grounded metal
object before touching any internal components. When the instrument is
unplugged, the chassis is not at earth ground.
▲
Thermo Fisher Scientific
Model 43i Trace Level-Enhanced Instruction Manual
7-1
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Troubleshooting
