Click 'Download sample' for the free sample file:

 Download sample

Make/Model Information:

  • Brand:   Icom
  • Models included:
    • Icom IC-M604

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   50
  • File size:  ∼ 4.10 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ROIC-0119

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

 Download sample

S-14306MZ-C1
Aug. 2006
SERVICE
MANUAL
VHF MARINE TRANSCEVER
iC-m604
This service manual describes the latest service information
for the IC-M604 VHF MARINE TRANSCEIVER at the time
of publication.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 15.6 V. This will ruin the
transceiver.
DO NOT expose the transceiver to rain, snow or any liquids.
DO NOT reverse the polarities of the power supply when
connecting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100
mW) to the antenna connector. This could damage the
transceiver’s front end.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
MODEL VERSION MICROPHONE COLOR
IC-M604 USA HM-126RB BLACK
USA-1 HM-126RG GRAY
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit order numbers
2. Component part number and name
3. Equipment model name and unit name
4. Quantity required

1110003490 S.IC TA31136FN IC-M604 MAIN UNIT 5 pieces
8820001210 Screw 2438 screw IC-M604 Top cover 10 pieces
Addresses are provided on the inside back cover for your
convenience.
Icom, Icom Inc. and logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other countries.
ORDERING PARTS
1. Make sure a problem is internal before disassembling
the transceiver.
2. DO NOT open the transceiver until the transceiver is
disconnected from its power source.
3. DO NOT force any of the variable components. Turn
them slowly and smoothly.
4. DO NOT short any circuits or electronic parts. An insu-
lated tuning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the trans-
ceiver is defective.
6. DO NOT transmit power into a signal generator or a
sweep generator.
7. ALWAYS connect a 50 dB to 60 dB attenuator between
the transceiver and a deviation meter or spectrum ana-
lyzer when using such test equipment.
8. READ the instructions of test equipment thoroughly
before connecting equipment to the transceiver.
REPAIR NOTES
INTRODUCTION DANGER
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
2 - 1 IC-M604 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2 - 2 HM-157 (Optional product) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
SECTION 3 DISASSEMBLY INSTRUCTION
SECTION 4 CIRCUIT DESCRIPTION
4 - 1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
4 - 2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 3
4 - 3 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 4
4 - 4 DSC CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 5
4 - 5 LOGIC CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 5
4 - 6 POWER SUPPLY CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 6
4 - 7 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 6
SECTION 5 ADJUSTMENT PROCEDURES
5 - 1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
5 - 2 PLL ADJUSTMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 2
5 - 3 RECEIVER ADJUSTMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 3
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS
7 - 1 IC-M604 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 1
7 - 2 HM-126RB/RG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 3
7 - 3 HM-157 (Optional product) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 3
SECTION 8 SEMI-CONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
9 - 1 VR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9 - 2 SQL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9 - 3 DIAL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9 - 4 CONNECT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9 - 5 LOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 2
9 - 6 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 4
9 - 7 AF UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 6
9 - 8 HM-126RB/RG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 8
9 - 9 HM-157 (Optional product) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 8
SECTION 10 BLOCK DIAGRAM
SECTION 11 WIRING DIAGRAM
SECTION 12 VOLTAGE DIAGRAM
12 - 1 LOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
12 - 2 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 2
12 - 3 AF UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 4
12 - 4 HM-126RB/RG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 5
12 - 5 HM-157 (Optional product) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 6
TABLE OF CONTENTS
¤ GENERAL
• Frequency coverage : 156.025–157.425 MHz (TX)
156.050–163.275 MHz (RX)
• Mode : 16K0G3E (FM) / 16K0G2B (DSC)
• Power supply voltage : 13.8 V DC ±15 % (negative ground)
• Operating temperature range : –20°C to +60°C; –4°F to +140°F
• Current drain (at 13.8 V DC) : Transmit at 25 W 5.5 A approx.
Receive max. audio 1.5 A approx.
• Antenna impedance : 50 ? (nominal)
• Dimensions (projections not included) : 220(W) ×110(H)×109.4(D) mm; 821/32(W) × 411/32(H) × 45/16(D) in
• Weight : 1400 g; 3.09 lb
¤ TRANSMITTER
• Output power (at 13.8 V DC) : High 25 W
Low 1 W
• Modulation : Variable reactance frequency modulation
• Maximum frequency deviation : ±5.0 kHz
• Frequency stability : ±0.3 kHz
• Spurious emissions : Less than –70 dBc
• Adjacent channel power : More than 70 dB
• Residual modulation : More than 40 dB
• Audio harmonic distortion : Less than 10% at 60% deviation
• Audio frequency response : +1 dB to –3 dB of 6 dB/octave from 300 Hz to 3000 Hz
• Microphone impedance : 2 k?
¤ RECEIVER
• Receive system : Double conversion superheterodyne system
• Intermediate frequencies : 1st 21.7 MHz*
1, 30.15 MHz*
2nd 450 kHz
• Sensitivity : Less than –10 dBµ at 12 dB SINAD (for both regular and CH70)
• Squelch sensitivity : Less than –10 dBµ at threshold
• Adjacent channel selectivity : More than 80 dB
• Spurious response : More than 80 dB
• Intermodulation rejection ratio : More than 80 dB
• Hum and noise : More than 40 dB
• Audio output power (at 13.8 V DC) : 5.0 W typical at 10% distortion with a 4 ? load
• Audio frequency responce : +1 dB to –3 dB of –6 dB octave from 300 Hz to 3000 Hz
1Channel 70, *
2Normal channels
Specifications are measured in accordance with TIA/EIA 603
All stated specifications are subject to change without notice or obligation.
SECTION 1 SPECIFICATIONS
¤ VHF MARINE CHANNEL LIST
*1 .ylno rewop woL *2 .rewop hgih yratnemoM *3 .ylno noitarepo CSD
)zHM( ycneuqerFrebmun lennahC
057.061051.6513030
051.651051.651 A30
008.061002.651 40
007.061001.6512020
002 .651002.651A40
058.061052.651 50
052.651052.651A50 A50
003.651003.65160 6 06 0
059.061053.651 70
053.651053.651A70 A70
004.651004.65180 80 80
054.651054.65190 9 09 0
005.651005.65101 0 10 1
055.651055.65111 1 11 1
006.651006.65121 21 21
*31 2 *31 1 056.651056.651 31
41 41 007.651007.651 41
*51 2 *51 1 057.651057.651 *51 1
61 61 008.651008.651 61
*71 1 *71 1 058.651058.651 71
005.161009.651 81
A81 A81 009.651009.651
055.161059.651 91
059.651059.651A91 A91
*02 02 1 006.161000.751 02
000.751000.751 A02
050.651050.651 A10
10 056.061050.651 10
NAC evieceRtimsnarT TNI
)zHM( ycneuqerFrebmun lennahC
007.161001.751 22
001.751001.751A22 A22
057.161051.7513232
056.161ylno xRb 12
051.751051.751 A32
008.161002.75142 4 24 2
058.161052.75152 5 25 2
058.161ylno xRb52
009.161003.75162 6 26 2
059.161053.75172 7 27 2
000.261004.75182 82 82
000.261ylno xRb82
526.061520.6510606
576.061570.651 16
570.651570.651A16 A16
527.061521.651 26
521.651521.651A26
577.061571.651 36
571.651571.651 A36
528.061522.6514646
522.651522.651A46 A46
578.061572.651 56
572.651572.651A56 A56 A56
529.061523.651 66
*A66A66 1 523.651523.651 A66
*76 2 573.651573.6517676
050.751050.751A12 A12
056.161050.7511212
NAC evieceRtimsnarT TNI
)zHM( ycneuqerFrebmun lennahC
575.651575.65117 17 17
526.651526.65127 27 27
576.651576.65137 37 37
*07 3 *07 3 525.651525.651 *07 3
527.651527.65147 47 47
*57 1 *57 1 577.651577.651 *57 1
*67 1 *67 1 528.651528.651 *67 1
*77 1 *77 1 578.651578.651 77
525.161529.651 87
529.651529.651A87 A87
575.161579.651 97
579.651579.651A97 A97
526.161520.751 08
520.751520.751A08 A08
576.161570.751 18
570.751570.751A18 A18
527.161521.751 28
521.751521.751A28 A28
577.16 1571.7513838
571.751571.751A38 A38
577.161ylno xRb38
528.161522.75148 48 48
522.751522.751 A48
578.161572.75158 5 85 8
572.751572.751 A58
529.161523.75168 68 68
574.651574.65196 9 69 6
524.651524.6518686
NAC evieceRtimsnarT TNI
)zHM( ycneuqerFrebmun lennahC
520.261524.75188 88 88
524.751524.751 A88
573.751573.751 A78
579.161573.75178 78 78
523.751523.751
NAC evieceRtimsnarT TNI
)zHM( ycneuqerF
524.261ylno XR
054.261ylno XR
005.261ylno XR
574.261ylno XR
525.261ylno XR
056.161ylno XR
577.161ylno XR
572.361ylno XR
004.261ylno XR
055.261ylno XR
evieceRtimsnarT lennahc XW
:ETON 38 dna 28 ,18 ,46 ,16 ,32 ,12 ,3 ,slennahc xelpmiS TONNAC .sretaw .A.S.U ni cilbup lareneg eht yb desu yllufwal eb
9-5 LOGIC UNIT (TOP VIEW)
The combination of this page and the next page
shows the unit layout in the same configuration as the
actual P.C. Board.
H5 H10 H15 H20 H25 H30 H35 H40 H45 H50 H55 H60 H65 H70 H75 H80 H85 H90 H95 H100 H105 H110 H115 H120 H125 H130 H135 H140 H145 H150 H0
H/L CH/WX 16
DISTRESS
ENT 0 CE
1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan S-14306MZ-C1
© 2006 Icom Inc.


Payment

Before sending payment please download the sample file to verify the following:

  •   Check the Brand, Model and Year.
  •   Review the Table of Contents (TOC).
  •   Review the Bookmarks.
  •   Inspect the quality of images.

7.00USD

Paypal
Credit card*
Debit card**

*Credit card or Debit card processing at Paypal portal.
**Debit card: available only from selected countries/territories.