Furuno FS-1550 Manuals

Furuno FS-1550 Manuals

Manuals and User Guides for Furuno FS-1550. We have 2 Furuno FS-1550 manuals available for free PDF download: Owner's Manual, Service Manual

Furuno FS-1550 Service Manual

Furuno FS-1550 Service Manual (66 pages)

SSB Radio telephone

Brand: Furuno | Category: Telephone | Size: 4.47 MB

Table of Contents

Contents
3
Specifications
5
Maintenance Parts List
7
Circuit Description
8
Transmitter Section
9
Transceiver Unit
9
Local Oscillator Section
10
Local Oscillator Frequency
10
Receiver Section
11
Panel/Cpu Section
12
System Control
13
Block Diagram of U1 of CPU Board
13
Transmissoin of Command/Data
14
Driving the LCD
14
Chip Selection (Address Decoder)
15
Reading of Key Operation
15
Lamp Status
16
Power Supply Section
17
Antenna Coupler Unit
18
Tuning Sequence of Coupler
18
Impedance Characteristics of Vertical Grounding Antenna
19
Capacitive Antenna
19
Inductive Antenna
19
Matching Circuit
20
Operations of L-C Matching Network
22
Block Diagram
23
Setting up
30
Function of DIP Switches
30
Alternation of IANT and IFIL
31
Writing a Frequency into Memory
32
Alternation of Input Voltage for Rectifier Unit PR -270
33
Alternating of Input Voltage for DC-DC Converter PC-220
34
Adjustment
35
Necessary Test Instruments
35
Line Voltage Check
36
Local OSC Frequency/Level Check
36
PA Bias Adjustment
37
Transmitter Output Level Adjustment
38
Procedure for Power Adjustment
40
Receiver Adjustment
41
Quick Check of Receiver Sensitivity
41
Check of Antenna Coupler
42
Troubleshooting
43
Self-Test
43
Check of Relay
43
Replacement of Major Parts
44
Final Transistor Replacement
44
Direction of the Transistor
44
Replacement of PC Board
45
Parts Location
50
Specifications of Major Components
54

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Furuno FS-1550 Owner's Manual

Furuno FS-1550 Owner's Manual (73 pages)

150W SSB Radiotelephone

Brand: Furuno | Category: Telephone | Size: 2.73 MB

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