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Chapter 8
Thermo Fisher Scientific
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
Hardware ............................................................................................ 8-1
Optical Bench .................................................................................. 8-2
Band-pass Filter ................................................................................ 8-2
Bench Heater Board ......................................................................... 8-2
Chopper Motor ................................................................................ 8-2
Optical Pickup ................................................................................. 8-3
Gas Filter Wheel .............................................................................. 8-3
Infrared Source ................................................................................. 8-3
Pre-amplifier Assembly with IR Detector ......................................... 8-3
Sample Flow Sensor ......................................................................... 8-3
Pressure Transducer ......................................................................... 8-3
Capillary .......................................................................................... 8-3
Pump ............................................................................................... 8-3
Purge Flow Switch (optional) ........................................................... 8-3
Software .............................................................................................. 8-3
Instrument Control .......................................................................... 8-4
Monitoring Signals ........................................................................... 8-4
Output Communication .................................................................. 8-4
Electronics .......................................................................................... 8-4
Motherboard .................................................................................... 8-5
External Connectors ...................................................................... 8-5
Internal Connectors ...................................................................... 8-5
Measurement Interface Board .......................................................... 8-6
Measurement Interface Board Connectors ..................................... 8-6
Flow Sensor Assembly ...................................................................... 8-6
Pressure Sensor Assembly ................................................................. 8-6
Bench Heater Board ......................................................................... 8-7
Pre-amp Board Assembly ................................................................. 8-7
Digital Output Board ....................................................................... 8-7
I/O Expansion Board (Optional) ..................................................... 8-7
Front Panel Connector Board .......................................................... 8-7
I/O Components ................................................................................. 8-8
Analog Voltage Outputs ................................................................... 8-8
Analog Current Outputs (Optional) ................................................ 8-8
Analog Voltage Inputs (Optional) .................................................... 8-9
Digital Relay Outputs ...................................................................... 8-9
Model 48i Trace Level-Enhanced Instruction Manual
Contents
xi
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Troubleshooting
