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Manuals
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Transceiver
DR-140T
Service manual
Alinco DR-140T Service Manual
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Service manual
(43 pages)
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Table of Contents
Contents
Specifications
Circuit Description
Receiver System
Transmitter System
PLL Circuit
Terminal Function of CPU
Semiconductor Data
AK2341 (XA0239) CTCSS Encoder/Decoder Data and Block Diagram
AN78L05M (XA0238) 5V Voltage Regulator
LA4425A (XA0410) 5W Audio Power Amplifiers
M5218FP (XA0068) Dual Low Noise Operational Amplifiers
M56760FP (XA0235) 540Mhz Frequency Synthesizer
M67746 (XA0412) 144 ~ 148Mhz 60W RF Power Module
M68702H (XA0444) 150 ~ 175Mhz 60W RF Power Module
M68702L (XA0445) 135 ~ 160Mhz 60W RF Power Module
MC7808CT (XA0082) 8V Voltage Regulator
RH5VL32AA-T1 (XA0198) C-MOS Voltage Detector
RH5VL45AA-T1 (XA0208) C-MOS Voltage Detector
TK10930VTL (XA0223) Narrow Band FM if IC
Μpc2710T (XA0449) RF Amplifier
24LC16B (XA0351) 16K Bits CMOS Serial EEPROM Block Diagram
Transistor, Diode and LED Outline Drawings
LCD Pattern
LCD Connection Table
Exploded View - Bottom View
LCD Assembly Exploded View
Top and Front Exploded Views
Parts List
Adjustment
Required Test Equipment
PLL Adjustment
TX Adjustment
RX Adjustment
Adjustment Points
Main Unit Side a
Main Unit Side B
CPU Unit Side a
CPU Unit Side B
VCO Unit Side a
VCO Unit Side B
EJ-20U (CTCSS Unit: Option)
Block Diagram
CPU Unit Diagram
VCO Unit
EJ-20U (CTCSS Unit: Option) Diagram
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Contents
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Specifications
3
Receiver System
4
Transmitter System
5
Tx Adjustment
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This manual is also suitable for:
Dr-140e
Dr-140te1
Dr-140te2
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