Service Manual Part 1

ManualsBrandsTait ManualsElectronicsMobile Transceiver

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This Section provides general fault finding assistance, and is intended to be used in con-

junction with the circuit descriptions and block diagrams in Section 2 and the circuit

diagrams and PCB information in Section 7.

The following topics are covered in this Section:

Section Title Page

5.1 Servicing Warning 5.2

5.2 Visual Checks 5.2

5.3 Component Checks 5.2

5.5.1

5.3.2

Transistor Check

Integrated Circuit (IC) Check

5.2

5.4 DC Checks 5.3

5.5 Receiver RF Checks 5.4

5.5.1

5.5.2

5.5.3

VCO Frequency

Control Line Voltages

RF Sensitivity

5.4

5.5

5.6 Transmitter RF Checks 5.5

5.7 Trunked Radios: System Check 5.6

5.7.1

5.7.1.1

5.7.1.2

5.7.2

Base Station Check

T2030 Radios

T2040 Radios

Base Station Control Channel Hunt

5.6

5.8 Trunked Radios: Test Mode 5.7

5.8.1

5.8.2

5.8.2.1

5.8.2.2

5.8.3

5.8.3.1

5.8.3.2

5.8.4

5.8.5

5.8.5.1

5.8.5.2

5.8.6

Test Mode Overview

Manual Test Mode (MTM)

T2030 & T2035 MTM Operation

T2040 & T2050 MTM Operation

Computer Controlled Test Mode (CCTM)

CCTM Selection

CCTM Protocol

Power-Up State

Test Facilities Available

Resetting The Radio

Test Facilities Table

Trunked Radios: Radio Mode/Status Display Codes

5.7

5.8

5.9

5.10

5.11

5.12

5.15

5.9 Options Interface Specifications 5.17

5.10 Fault Finding Charts 5.20