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IC-77
ICOM IC-77 Manuals
Manuals and User Guides for ICOM IC-77. We have
2
ICOM IC-77 manuals available for free PDF download: Service Manual, Instruction Manual
Icom IC-77 Service Manual (71 pages)
Brand:
Icom
| Category:
Transceiver
| Size: 24.81 MB
Table of Contents
Introduction
2
Ordering Parts
2
Danger
2
Repair Notes
2
Table of Contents
3
Specifications
4
Disassembly Instructions
5
To Remove the Front Panel
5
Remove Flat Cables
5
Inside Views
6
PLL, PA and Filter Units
6
Main Unit
6
Circuit Description
7
Receiver Circuits
7
RF Switching/Rf Switching Circuit
7
Preamplifier/1St Mixer Circuit
7
1St/2Nd if Circuit
8
2Nd Mixer Circuit
8
Noise Blanker Circuit
8
BFO Circuit/Bfo Frequency in each Mode
8
SSB/CW Demodulator Circuits
9
AM Demodulator/Agc Circuits
9
AF Input Mode Selector Switch
9
S-Meter/Squelch Circuit
9
AF Amplifier Circuit
10
Transmitter Circuits
10
Microphone Amplifier Circuit
10
CW Keying Circuit
10
RF Circuit
11
Low-Pass Filter Circuit
11
ALC Circuit
11
APC Circuit
11
Temperature Protection Circuit
12
RF Meter/Pll Circuit
12
Frequency Construction
12
General Description/1St lo Circuit
12
Reference Oscillator/Logic Circuit
13
Band Selection Data
13
RIT Control
13
Cpu/Input Port Allocations
13
Output Ports
14
Key Matrix
14
Regulator Circuits
14
Adjustment Procedures
15
Preparation before Servicing
15
Required Test Equipment
15
Connection
15
PLL Adjustment
16
Receiver Adjustment
16
PLL Unit
17
Main and VR Units
19
Transmitter Adjustment
20
PA and Filter Units
21
Parts List
24
MIC Board
25
Sensor Board
26
PA Unit
36
Filter Unit
37
Mechanical Parts
38
Front, Cabinet Parts and Accessories
38
Chassis Parts
40
Board Layouts
42
Front, VR and Jack Units
49
Front Unit
49
VR Unit
50
Jack Unit
50
Block Diagram
57
Voltage Diagram
59
Main, PA and Filter Units
59
PLL and Front Units
64
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ICOM IC-77 Instruction Manual (25 pages)
hf transceiver
Brand:
ICOM
| Category:
Transceiver
| Size: 2.59 MB
Table of Contents
When First Applying Power
2
Precautions
2
Table of Contents
3
Unpacking
3
Accessories Included
3
Panel Description
4
Front Panel
4
Function Display
6
Microphone (HM-36)
7
HM-36 Schematic Diagram
7
Operation
8
Initial Settings
8
Lock Function
9
Channel Selection
9
Frequency Indication
9
Channel Scan
9
Receiving
10
Basic Receiving
11
RIT Function
11
Preamp
11
Attenuator, Noise Blanker, Squelch Function
11
Transmitting
12
Basic Transmitting
13
Microphone Gain Control
13
RF Power Control
13
CW Operation
13
Installation and Connections
14
Rear Panel
14
ACC Socket Information
15
Mounting the Receiver
16
Antenna
16
PL-259 Connector Installation
16
Grounding
16
Connections Chart
17
Power Supply Connections
18
Connecting an Icom DC Power Supply
18
Connecting a Non-Icom DC Power Supply
18
Connecting a Vehicle Battery
18
Specifications
19
Maintenance
20
Troubleshooting
20
Fuse Replacement
21
CPU Backup Battery
21
Options
22
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ICOM Categories
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