User Manual
Table Of Contents
- CONTENTS
- Chapter 1 Product Overview
- Chapter 2 Working Principle
- 2.1 Microwave/Millimeter-Wave Frequency Conversio
- 2.2 Frequency Synthesis Module
- 2.3 IF Signal Processing Module
- 2.4 Data Processing, Display and Control Module
- Chapter 3 Analysis on Common Faults
- 3.1 Lighting failure of power indicator lamp
- 3.2 No response of key
- 3.3 No zero frequency signal
- 3.4 Frequency accuracy out of standard
- 3.5 No signal detected when the pan smaller than
- 3.6 Large deviation between the signal amplitude
- condition
- 3.7 SWR deviation at input port
- 3.8 Phase noise deviation
- 3.9 Abnormal attenuation control
- 3.10 No display for battery under charging and cu
- Chapter 4 Repair of Parts
- 4.1 Removal Process
- Chapter 5 Calibration of the Main Unit
- 5.1 Temperature Compensation
- 5.2 Automatic Test of Indicators
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Fig.7 Removal of the microwave/millimeter-wave frequency conversion module
5. Remove the front casing assembly:
Firstly, remove and replace the IF channel plate (7):
a) Remove 4 fixing screws of the IF channel plate (7).
b) Remove the interconnecting 50-core flat cables between the CPU board (9) and the IF channel plate (7).
c) The installation process is reverse to the removal process.
Fig.8 Removal of the IF channel plate
After that, remove and replace the CPU board (9):
a) Remove the interconnecting 50-core cables between the CPU board (9) and the keyboard (5).
b) Remove the connection cables between the CPU board (9) and 2 fan components (8).
c) Remove 4 fixing screws of the CPU board (9), and then remove the CPU board (9).
d) Remove the connection cable of the battery compartment (10) at the back.
e) The installation process is reverse to the removal process.