Download Model 48i High Level

Contents
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Chapter 7
Servicing .............................................................................................................7-1
Safety Precautions ............................................................................... 7-2
Firmware Updates ............................................................................... 7-3
Accessing the Service Mode................................................................. 7-3
Replacement Parts List ........................................................................ 7-4
Cable List............................................................................................ 7-5
External Device Connection Components .......................................... 7-5
Removing the Measurement Bench and Lowering the Partition Panel 7-7
Fuse Replacement ............................................................................... 7-8
Fan Replacement................................................................................. 7-9
IR Source Replacement ..................................................................... 7-10
Filter Wheel Replacement ................................................................. 7-11
Chopper Motor Replacement............................................................ 7-13
Optical Bench Replacement .............................................................. 7-13
Optical Switch Replacement ............................................................. 7-15
Bench Heater Assembly Replacement................................................ 7-16
Detector/Preamplifier Assembly Replacement ................................... 7-17
Preamp Board Calibration................................................................. 7-18
Pump Replacement ........................................................................... 7-19
Pressure Transducer Replacement ..................................................... 7-20
Pressure Transducer Calibration........................................................ 7-21
Flow Transducer Replacement .......................................................... 7-23
Flow Transducer Calibration............................................................. 7-24
Capillary Cleaning or Replacement ................................................... 7-25
Optional Zero/Span and Sample Solenoid Valve Replacement.......... 7-26
Analog Output Testing ..................................................................... 7-27
Analog Output Calibration ............................................................... 7-29
Analog Input Calibration .................................................................. 7-30
Calibrating the Input Channels to Zero Volts ................................ 7-30
Calibrating the Input Channels to Full-Scale ................................. 7-31
Ambient Temperature Calibration .................................................... 7-32
I/O Expansion Board (Optional) Replacement ................................. 7-33
Digital Output Board Replacement................................................... 7-34
Motherboard Replacement................................................................ 7-35
Measurement Interface Board Replacement ...................................... 7-36
Front Panel Board Replacement........................................................ 7-37
LCD Module Replacement ............................................................... 7-38
Service Locations............................................................................... 7-39
Chapter 8
System Description...........................................................................................8-1
Hardware ............................................................................................ 8-1
Optical Bench .................................................................................. 8-2
Band-pass Filter................................................................................ 8-2
Model 48i High Level Instruction Manual
Thermo Electron Corporation