Alinco DJ-191 - Service Manual

Service M anual
CONTENTS
•SPECIFICATIONS.......................................................2
•CIRCUIT DESCRIPTION............................................3
•SEMICONDUCTOR DATA........................................9
•EXPLODED VIEW.......................................................15
•PARTS LIST .............................................................. 18
•ADJUSTMENT...........................................................21
•P C BOARD VIEW.......................................................26
•CIRCUIT DIAGRAM...................................................41
• BLOCK DIAGRAM...................................................45
ALINCO, INC

Summary

Circuit Description

Receiver System

Details the double superheterodyne receiver system with IF stages.

Transmitter System

Explains the transmitter's modulation, power amplification, and APC circuits.

PLL Synthesizer Circuit

Describes the PLL system for frequency synthesis and control.

CPU and Peripheral Circuits

Covers CPU functions, LCD, lamps, and reset/backup circuits.

CPU Terminal Functions

Lists and explains functions of the CPU chip pins.

Semiconductor Data

EEPROM 24 LC16 BT-I;SN

Details the pin assignment and block diagram for the EEPROM.

DTMF Receiver LC73881 M-TLM

Describes the DTMF receiver IC, its pin functions, and block diagram.

Electronic Volume M5222 FP-600 C

Explains the electronic volume IC, including its block diagram.

PLL M64076 GP

Details the PLL IC, its pin assignment, and block diagram.

C-MOS Voltage Detector RH5 VL25 AA-T1

Presents the block diagram for a C-MOS voltage detector IC.

C-MOS Voltage Detector RH5 VA32 AA-T1

Presents the block diagram for a C-MOS voltage detector IC.

FM IF IC MC3372 VM-EL

Details the FM IF IC, including its block diagram.

Audio Power Amplifier NJM2070 M T1

Explains the audio power amplifier IC with its block diagram.

Operational Amplifier NJM2100 M T1

Covers the operational amplifier IC, including its pin assignment and block diagram.

Transistor, Diode, LED Drawings

Shows outline drawings for various transistors, diodes, and LEDs.

LCD Connection

Illustrates the connection diagram for the LCD display.

P. A. Module (IC101)

Shows the schematic for the Power Amplifier module.

Exploded View

Front View 1

Shows the first perspective of the exploded view of the device.

Front View 2

Presents the second perspective of the exploded view of the device.

Rear View

Displays the exploded view of the rear of the device.

Parts List

CPU Unit Parts

Lists components for the CPU unit.

CHARGE Unit Parts

Lists components for the charge unit.

Mechanical Parts

Lists mechanical components for the device.

PTT Unit Parts

Lists components for the PTT unit.

JACK Unit Parts

Lists components for the jack unit.

VCO Unit Parts

Lists components for the VCO unit.

SW Unit Parts

Lists components for the SW unit.

RF Unit Parts

Lists components for the RF unit.

Adjustment

Required Test Equipment

Lists essential equipment for radio parameter adjustments.

Adjustment Mode

Explains how to enter and use the device's adjustment mode.

Reference Frequency Adjustment

Details the procedure for adjusting the reference frequency.

High Power Adjustment

Describes how to set the high output power level.

Low Power Adjustment

Details the procedure for setting the low output power level.

Minimum Frequency Sensitivity Adjustment

Explains how to adjust the minimum frequency sensitivity.

Medium Frequency Sensitivity Adjustment

Details adjusting the medium frequency sensitivity.

Maximum Frequency Sensitivity Adjustment

Explains how to adjust the maximum frequency sensitivity.

S-meter (1) Adjustment

Describes how to perform the first level S-meter adjustment.

S-meter (FULL) Adjustment

Details how to perform the full S-meter adjustment.

Deviation Adjustment

Explains how to adjust the frequency deviation.

DTMF (1) Test

Describes how to test DTMF code "1".

DTMF (D) Test

Describes how to test DTMF code "D".

Tone 67 Hz Test

Explains how to test the 67 Hz tone encoder.

Tone 88.5 Hz Test

Details testing the 88.5 Hz tone encoder.

Tone 250.3 Hz Test

Describes testing the 250.3 Hz tone encoder.

Tone Burst Test

Explains how to test the tone burst function.

Aging Test

Details how to perform the aging test when necessary.

Note on Adjusting Sensitivity

Provides important notes regarding sensitivity adjustment procedures.

PC Board View

CPU Unit Side A (VALUE)

Shows the component layout for the CPU unit, side A (value).

CPU Unit Side A (REFERENCE)

Shows the component layout for the CPU unit, side A (reference).

CPU Unit Side B (VALUE)

Shows the component layout for the CPU unit, side B (value).

CPU Unit Side B (REFERENCE)

Shows the component layout for the CPU unit, side B (reference).

SW Unit Side A (VALUE;REFERENCE)

Displays component layouts for SW unit, side A (value and reference).

SW Unit Side B (VALUE;REFERENCE)

Displays component layouts for SW unit, side B (value and reference).

PTT Unit Side A (VALUE;REFERENCE)

Shows component layouts for PTT unit, side A (value and reference).

PTT Unit Side B (VALUE;REFERENCE)

Displays component layouts for PTT unit, side B (value and reference).

VCO Unit Side A (VALUE;REFERENCE)

Displays component layouts for VCO unit, side A (value and reference).

VCO Unit Side B (VALUE;REFERENCE)

Displays component layouts for VCO unit, side B (value and reference).

JACK Unit Side A (VALUE;REFERENCE)

Displays component layouts for JACK unit, side A (value and reference).

JACK Unit Side B (VALUE;REFERENCE)

Displays component layouts for JACK unit, side B (value and reference).

CHARGE Unit Sides A;B (VALUE;REFERENCE)

Shows component layouts for CHARGE unit, sides A & B.

TSO Unit Side A (VALUE;REFERENCE)

Displays component layouts for TSO unit, side A (value and reference).

TSO Unit Side B (VALUE;REFERENCE)

Displays component layouts for TSO unit, side B (value and reference).

Circuit Diagram

PTT Unit Circuit Diagram

Illustrates the schematic for the PTT unit.

VCO Unit Circuit Diagram

Shows the schematic diagram for the VCO unit.

SW Unit Circuit Diagram

Presents the schematic diagram for the SW unit.

SP-JACK Unit Circuit Diagram

Illustrates the schematic for the speaker and jack unit.

CHARGE Unit Circuit Diagram

Shows the schematic diagram for the charge unit.

TSQ Unit Circuit Diagram

Presents the schematic diagram for the TSQ unit.

Alinco DJ-191 Specifications

General

Modulation	FM
Battery	Li-ion 7.4V 1800mAh
Waterproof	No
Type	Handheld
Power Output	5W
Dimensions	58 x 110 x 32 mm
Weight	220 g