Click 'Download sample' for the free sample file:

 Download sample

Make/Model Information:

  • Brand:   Icom
  • Models included:
    • Icom IC-7600

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   183
  • File size:  ∼ 18.90 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ROIC-0041

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

Apr. 2009
SERVICE MANUAL
ADDENDUM
CONTENTS
PARTS LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
VOLTAGE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . 41
Apr. 2009
S-14523XZ-C1
Mar. 2009
HF/50 MHz TRANSCEIVER
This service manual describes the latest technical
information for the IC-7600 HF/50 MHz TRANSCEIVER
TRANSCEIVER at the time of publication.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than specified. 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 TX OUTPUT POWER
IC-7600
[EUR-1]
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit Icom parts numbers
2. Component name
3. Equipment model name and unit name
4. Quantity required

1130013010 SN74AHC1G08DCK3 IC-7600 LOGIC UNIT 1 piece
8930079060 3073 DC PLATE IC-7600 CHASSIS 2 pieces
Addresses are provided on the inside back cover for your
convenience.
Icom, Icom Inc. and ICOM logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other countries.
ORDERING PARTS
1. Make sure that the 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
insulated tuning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the
transceiver is defective.
6. DO NOT transmit power into a Standard 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
Analyzer when using such test equipment.
8. READ the instructions of test equipment throughly
before connecting a test equipment to the transceiver.
REPAIR NOTES
INTRODUCTION CAUTION
TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 CIRCUIT DESCRIPITON
3-1 RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-3 FREQUENCY SYNTHESIZER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3-4 VOLTAGE BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3-5 CPU PORT ALLOCATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
SECTION 4 ADJUSTMENT PROCEDURES
4-1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 REFERENCE FREQUENCY SIGNAL LEVEL ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-3 PLL UNIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-4 PA UNIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-5 CTRL UNIT ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-6 MAIN ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-7 MAIN UNIT (SCOPE) ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4-8 RF UNIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4-9 SOFTWARE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
SECTION 5 PARTS LIST
SECTION 6 MECHANICAL PARTS
SECTION 7 BOARD LAYOUTS
SECTION 8 GENERAL WIRING
SECTION 9 BLOCK DIAGRAM
SECTION 10 VOLTAGE DIAGRAM
LOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
DISPLAY UNIT (Incl. VR-A, VR-B, VR-C, MIC, JACK and RIT BOARDS) . . . . . . . . . . . . . . . . 10-5
MAIN UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8
PLL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14
RF UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-17
TUNER UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-19
FILTER UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20
CTRL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21
BPF UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24
DCDC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24
BPF UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24
PREAMP BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-25
PA UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-25
SECTION 1. SPECIFICATIONS
N General
• Frequency coverage : (unit: MHz)
Receive
0.030–60.000* 1*2
Transmit
1.800–1.999* 2, 3.500–3.999* 2,
5.33050* 3, 5.34650*3, 5.36650*3,
5.37150* 3, 5.40350*3,
7.000–7.300* 2, 10.100–10.150* 2,
14.000–14.350* 2, 18.068–18.168* 2,
21.000–21.450* 2, 24.890–24.990* 2,
28.000–29.700* 2, 50.000–54.000*2
*1Some frequency bands are not guaranteed.
*2Depending on version. *3USA version only.
• Mode : USB, LSB, CW, RTTY, PSK,
• No. of memory channels : 101 (99 regular, 2 scan edges)
• Antenna connector type : SO-239 × 2 and phono jack
(RCA; 50 ø impedance)
• Temperature range : 0°C to +50°C (+32°F to +122°F)
• Frequency stability : Less than ±0.5 ppm 5 min. after
power ON. (0°C to +50°C; +32°F to
+122°F)
• Frequency resolution : 1 Hz
• Power supply : 13.8 V DC ±15% (negative ground)
• Power consumption
Transmit : Max. power 23 A
Receive : Standby 3.0 A
Max. audio 3.5 A
• Dimensions : 340(W) × 116(H) × 279.3(D) mm
(projections not included) 13 3/8(W) × 49/16(H) × 11(D) in
• Weight (approx.) : 10.0 kg; 22 lb
• ACC 1 connector : 8-pin DIN connector
• ACC 2 connector : 7-pin DIN connector
• CI-V connector : 2-conductor 3.5 (d) mm (1/8?)
• Display : 5.8-inch (diagonal)
TFT color LCD
N Transmitter
• Output power (continuously adjustable)
SSB/CW/RTTY/FM : Less than 2 to 100 W
AM : Less than 1 to 30 W
• Modulation system
SSB : Digital PSN modulation
AM : Digital Low power modulation
FM : Digital Phase modulation
• Spurious emission
HF bands : Less than –50 dB
50 MHz band : Less than –63 dB
• Carrier suppression : More than 40 dB
• Unwanted sideband : More than 55 dB
suppression
• ?TX variable range : ±9.999 kHz
• Microphone connector : 8-pin connector (600 ø)
• ELEC-KEY connector : 3-conductor 6.35(d) mm (1/4?)
• KEY connector : 3-conductor 6.35(d) mm (1/4?)
• SEND connector : Phono jack (RCA)
• ALC connector : Phono jack (RCA)
N Receiver
• Receive system : Double superheterodyne
• Intermediate frequencies
1st : 64.455 MHz
2nd : 36 kHz
• Sensitivity (typical)
SSB, CW, RTTY : 0.15 µV (1.80–29.99 MHz)*1
(10 dB S/N) BW=2.4 kHz 0.12 µV (50.0–54.0 MHz)*2
AM (10 dB S/N) : 6.3 µV (0.1–1.799 MHz)*1
BW=6 kHz 2 µV (1.80–29.99 MHz)*1
1.6 µV (50.0–54.0 MHz)*2
FM (12 dB SINAD) : 0.5 µV (28.0–29.99 MHz)*1
BW=15 kHz 0.3 µV (50.0–54.0 MHz)*2
*1Pre-amp 1 is ON. *2Pre-amp 2 is ON.
• Squelch sensitivity (Pre-amp: ON)
SSB : Less than 3.2 µV
FM : Less than 0.3 µV
• Selectivity (IF ?lter shape is set to SHARP.)
SSB (BW: 2.4 kHz) : More than 2.4 kHz/–6 dB
Less than 3.8 kHz/–60 dB
CW (BW: 500 Hz) : More than 500 Hz/–6 dB
Less than 900 Hz/–60 dB
RTTY (BW: 350 Hz) : More than 350 Hz/–6 dB
Less than 650 Hz/–60 dB
AM (BW: 6 kHz) : More than 6.0 kHz/–6 dB
Less than 15.0 kHz/–60 dB
FM (BW: 15 kHz) : More than 12.0 kHz/–6 dB
Less than 20.0 kHz/–60 dB
• Spurious and image : More than 70 dB
rejection ratio (except IF through on 50 MHz band)
• AF output power : More than 2.0 W at 10%
(at 13.8 V DC) distortion with an 8 ø load
• RIT variable range : ±9.999 kHz
• PHONES connector : 3-conductor 6.35 (d) mm (1/4?)
• External SP connector : 2-conductor 3.5 (d) mm
(1/8?)/8 ø
• DSP ANF attenuation : More than 30 dB
(with 1 kHz single tone)
• DSP NR attenuation : More than 6 dB
(noise rejection in SSB)
N Antenna tuner
• Matching impedance range
HF bands : 16.7 to 150 ø unbalanced
(Less than VSWR 3:1)
50 MHz band : 20 to 125 ø unbalanced
(Less than VSWR 2.5:1)
• Minimum operating input : 8 W (HF bands)
power 15 W (50MHz band)
• Tuning accuracy : VSWR 1.5:1 or less
• Insertion loss : Less than 1.0 dB
(after tuning at RF power 100W)
Spurious signals may be displayed on the spectrum scope screen
regardless of the transceiver’s state (Tx or Rx). They are gener -
ated in the scope circuit. This does not indicate a transceiver mal-
function.
All stated specifications are typical and subject to change without
notice or obligation.
SECTION 2. INSIDE VIEWS
• MAIN UNIT
USB INTERFACE
ATTENUATOR CIRCUITS
DDS CIRCUITS
3RD LO CIRCUIT
(For SCOPE )
2ND RX LO CIRCUITS
VCA (For TX AF CIRCUITS)
(IC2601) T8 LINE CONTROLLER
(Q1102)
DC AMP
(IC1404)
D/A CONVERTER
(IC1403)
2ND TX IF FILTER SW
(IC3502)
2ND TX IF FILTER SW
(IC3501)
A/D, D/A CONVERTER
(IC4301)
LIMITER
(IC3002)
FLASH ROM
(IC5102)
R8 LINE CONTROLLER
(Q1112)
1/2 PRESCALER
(IC4005)
A/D CONVERTER
(IC4004)
VCA (For RX AF CIRCUIT)
(IC2331)
FLASH ROM
(IC5002)
TRX DSP
(IC5001)
SCOPE DSP
(IC5101)
4 - 13
4-7 MAIN UNIT ADJUSTMENT (SCOPE CIRCUIT)
ADJUSTMENT ADJUSTMENT CONDITION OPERATION ADJUSTMENT
POINT VALUE
DISPLAY
1 • Frequency : 14.200 MHz
(Main band)
• Mode : CW
• [DUALWATCH] : "OFF"
• [P.AMP] : "OFF"
• [ATT] : "OFF"
• [SCOPE] : "ON"
• [SCOPE ATT] : "OFF"
• [SPAN] : "±25 kHz"
• Receiving
• Connect an SSG to [ANT1] and set
Frequency : 14.200 MHz
Modulation : None
Level : +54 dBµ † (–53 dBm)
L6032? L6037?
L6041? L6023?
L6028? C6076
(in sequence)
L6023, L6028,
(repeatedly)
Maximum
waveform
on the
SCOPE
screen
2• Connect an SSG to J6001 and set
Frequency : 71.715 MHz
Modulation : None
Level : +100 dBµ † (–7 dBm)
Minimum
waveform
on the
SCOPE
screen
3• Connect an SSG to [ANT1] and set
Frequency : 14.200 MHz
Modulation : None
Level : +54 dBµ† (–53 dBm)
L6023, L6028
(repeatedly)
Maximum
waveform
on the
SCOPE
screen
SCOPE GAIN 1 • Receiving 1) Connect an SSG to [ANT1] and set
Frequency : 14.200 MHz
Modulation : None
Level : +54 dBµ † (–53 dBm)
2) Adjust the waveform to set the peak of
the wave spectrum reaches the 6th scale.
R6071 (See ? g.1)
SCOPE ATT 1 • [SCOPE ATT] : "30 dB"
• Receiving
1) Connect an SSG to [ANT1] and set
Frequency : 14.200 MHz
Modulation : None
Level : +54 dBµ † (–53 dBm)
2) Adjust the waveform to set the peak of
the wave spectrum reaches the 3rd scale.
R6043 (See ? g.2)
†; The output level of the standard signal generator (SSG) is indicated as the SSG’s terminated circuit.

6th scale

3rd scale
7 - 10
V0 V5 V10 V15 V20 V25 V30 V35 V40 V45 V50 V55 V60 V65 V70 V75 V80 V85 V90
• FILTER UNIT
(BOTTOM VIEW)
The combination of top side and bottom side of this
page shows the actual con?guration of P.C. board.
1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan S-14523XZ-C1
© 2009 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.