Equipment information:

Icom IC-78 Transceiver
Manufacturer:
Icom
Model: IC-78
Date: 2000
Category: Radio, Communication
Group: Transceiver
Description: HF TRANCEIVER
Information:
                                    

These manuals are available for the above equipment:

Icom -- IC-78 -- Service Manual
File name: Icom-6901-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 56
Size: 11.66 Mbytes (12224764 Bytes)
Language: english
Revision:
Manual-ID/Number: S-13707MZ-C1
Date: 2000
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: 942f68f24d10911ef9ab122662290792
ed2kID: ba7fc772a331e309cd8356bd8080b6c5
Downloads: 58 since 19 July 2015
Information:
This service manual describes the latest service information
for the IC-78 HF TRANSCEIVER at the time of publication.

SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPTION
4 – 1 RECEIVER CIRCUITS
.................................................................................................................
4 – 1
4 – 2 TRANSMITTER CIRCUITS
..........................................................................................................
4 – 4
4 – 3 PLL CIRCUIT
...............................................................................................................................
4 – 6
4 – 4 LOGIC CIRCUITS
........................................................................................................................
4 – 6
4 – 5 POWER SUPPLY CIRCUITS
.......................................................................................................
4 – 8
SECTION 5 ADJUSTMENT PROCEDURES
5 – 1 PREPARATION BEFORE
SERVICING.........................................................................................
5 – 1
5 – 2 PLL ADJUSTMENT
.......................................................................................................................
5 – 2
5 – 3 TRANSMITTER
ADJUSTMENTS..................................................................................................
5 – 4
5 – 4 RECEIVER
ADJUSTMENTS.........................................................................................................
5 – 8
5 – 5 SET MODE
ADJUSTMENT...........................................................................................................
5 – 10
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
SECTION 8 SEMI-CONDUCTOR INFORMATIONS
SECTION 9 BOARD LAYOUTS
9 – 1 MAIN UNIT
..................................................................................................................................
9 – 1
9 – 2 PA
UNIT........................................................................................................................................
9 – 3
9 – 3 PLL UNIT
.....................................................................................................................................
9 – 3
9 – 4 LOGIC UNIT
................................................................................................................................
9 – 5
9 – 5 PHONE BOARD
............................................................................................................................
9 – 5
9 – 6 MIC BOARD
.................................................................................................................................
9 – 5
9 – 7 VR
BOARD...................................................................................................................................
9 – 5
9 – 8 SENSOR
BOARD..........................................................................................................................
9 – 6
9 – 9 FILTER UNIT
................................................................................................................................
9 – 7
SECTION 10 BLOCK DIAGRAM
SECTION 11 WIRING DIAGRAM
SECTION 12 VOLTAGE DIAGRAMS
Icom-6901-Manual-Page-1-Picture
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Icom -- IC-78 -- User Manual
File name: Icom-6912-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 48
Size: 2.64 Mbytes (2769070 Bytes)
Language: english
Revision:
Manual-ID/Number: A-5658H-1EX-w
Date: 2000
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: 015b0ef049ca94fcb282dfb28a7a6201
ed2kID: 4afe1ea4c54b0d474ddfaa7b08b65115
Downloads: 45 since 19 July 2015
Information:
IMPORTANT
.............................................................. i
EXPLICIT DEFINITIONS
........................................... i
PRECAUTIONS
........................................................ i
1 TABLE OF CONTENTS ....................................... 1
SUPPLIED ACCESSORIES ..................................... 1
2 PANEL DESCRIPTION ................................... 2–7
n Front panel
....................................................... 2
n Function display
............................................... 4
n Rear panel
........................................................ 5
n Microphone (HM-36) ........................................ 7
3 INSTALLATION AND CONNECTIONS ......... 8–12
n Unpacking
........................................................ 8
n Selecting a location
.......................................... 8
n Grounding
......................................................... 8
n Antenna connection
.......................................... 8
n Required connections ....................................... 9
n Power supply connections .............................. 10
n Advanced connections .................................... 11
n External antenna tuners ................................. 12
4 OPERATION
................................................. 13–27
n Selecting a channel
......................................... 13
n Frequency indication
....................................... 14
n Lock function
................................................... 14
n Scan
function................................................... 14
n Basic voice receive and transmit..................... 15
n Mode selection
................................................ 15
n RF gain and Squelch....................................... 15
n Functions for
transmit...................................... 16
n Functions for receive
....................................... 19
n Filter selection
................................................. 21
n Filter
setting..................................................... 22
n Functions for
CW............................................. 23
n Functions for RTTY
......................................... 25
n Channel comment programming ..................... 27
5 SET MODE
................................................... 28–33
n
General............................................................
28
n Quick set mode items...................................... 29
n Initial set mode
items....................................... 31
6 EXTRA FEATURES...................................... 34–36
n
Instruction........................................................
34
n VFO operation
................................................. 34
n 2-Tone alarm operation ................................... 36
7 INSTALLATION AND CONNECTIONS........ 37–38
n Opening the transceiver’s case ...................... 37
n Optional bracket and carrying handle.............. 37
n CR-338 HIGH STABILITY CRYSTAL UNIT ......... 38
n Optional IF filters
............................................ 38
8 MAINTENANCE ........................................... 39–40
n Troubleshooting
.............................................. 39
n Fuse replacement
........................................... 40
n Resetting the CPU
.......................................... 40
9 REMOTE JACK INFORMATION.................. 41–42
n CI-V remote control
......................................... 41
n Data cloning between transceivers ................. 42
10 SPECIFICATIONS ........................................... 43
12 OPTIONS
.................................................. 44–45
Icom-6912-Manual-Page-1-Picture
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