Thermo Scientific 42i Instruction Manual page 185

Thermo Fisher Scientific
Chapter 7
Servicing
This chapter explains how to replace the Model 42i subassemblies. It
assumes that a subassembly has been identified as defective and needs to be
replaced.
For fault location information refer to the
chapter and the "Troubleshooting" chapter in this manual.
The service mode in the "Operation" chapter also includes parameters and
functions that are useful when making adjustments or diagnosing
problems.
For additional service assistance, see
chapter.
This chapter includes the following parts information and component
replacement procedures:
"Safety Precautions" on page
●
"Firmware Updates" on page
●
"Accessing the Service
●
"Replacement Parts
●
"Cable List" on page
●
"External Device Connection
●
"Removing the Measurement Bench and Lowering the Partition
●
on page 7-8
"Pump Replacement" on page
●
"Fan/Filter Replacement" on page
●
"PMT Cooler and Reaction Chamber Assembly
●
7-11
"Photomultiplier Tube
●
"PMT High Voltage Power Supply
●
"PMT Voltage Adjustment" on page
●
"Reaction Chamber Cleaning or
●
"Preventive
"Service Locations" at the end of this
7-2
7-4
Mode" on page 7-4
List" on page 7-4
7-6
Components" on page
7-9
7-10
Replacement" on page
Replacement" on page
7-16
Removal" on page
Maintenance"
7-6
Panel"
Replacement" on page
7-13
7-14
7-17
Model 42i Instruction Manual 7-1