Service Manual Part 1

  8
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 
This Section provides information necessary for servicing T2000 Series II radios, and
covers the following topics:
Section Title Page
3.1 Servicing Precautions 3.2
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
Caution: Accidental Transmit
Caution: Antenna Loading
Caution: Beryllium Oxide & Power Transistors
Caution: CMOS Devices
Caution: Screw Head Types
3.2
3.2
3.2
3.2
3.3
3.2 Disassembly Instructions 3.5
3.2.1
3.2.2
3.2.3
3.2.3.1
3.2.3.2
3.2.4
3.2.4.1
3.2.4.2
3.2.5
3.2.6
To Gain Access To The Logic PCB
To Remove The Bottom Cover And Microprocessor Shield
To Detach The Control Head
Locally Mounted Models
Remotely Mounted Models
To Disassemble The Control Head
T2010, T2015, T203X & T2060 Radios
T2020, T2040 & T2050 Radios
To Detach The EMC Filter PCB
To Remote A Locally Mounted T2020, T2040 & T2050
3.5
3.5
3.6
3.6
3.6
3.7
3.7
3.9
3.11
3.11
3.3 Power Amplifier - Special Instructions 3.12
3.3.1
3.3.2
To Replace PA Transistors
To Remove Case Mica Capacitors
3.12
3.12
3.4 Repair 3.13
3.4.1
3.4.1.1
3.4.1.2
3.4.1.3
3.4.1.4
3.4.2
3.4.2.1
3.4.2.2
Surface Mount Devices
Surface Mount Device (SMD) Precautions
Servicing Equipment Required
Removal & Replacement Of SMD Components
Common Causes Of SMD Failure
Leaded Component Removal
Desoldering Iron Method
Component Cutting Method
3.13
3.13
3.13
3.15
3.17
3.17
3.17
3.18
3.5 Programming 3.18