Icom IC-FR6100 User manual
S-14419XZ-C1
Feb. 2008
UHF FM REPEATER
This service manual describes the latest service information
for the IC-FR6000 UHF DIGITAL REPEATER at the time of
publication.
NEVER connect the repeater to an AC outlet or to a DC
power supply that uses more than specifed. This will ruin
the repeater.
DO NOT expose the repeater to rain, snow or any liquids.
DO NOT reverse the polarities of the power supply when
connecting the repeater.
DO NOT apply an RF signal of more than 20 dBm (100 mW)
to the antenna connector. This could damage the repeater’s
front-end.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
MODEL VERSION FREQUENCY
RANGE CH. SPACING TX
POWER
IC-FR6000
USA-01 400–470 MHz 6.25/12.5/25.0
kHz 50 W
USA-02 450–520 MHz
EXP-01 400–470 MHz 12.5/25.0 kHz
EXP-02 450–520 MHz
IC-FR6100 EUR-01 400–470 MHz 12.5/20.0/25.0
kHz 25 W
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
<ORDER EXAMPLE>
1110003491 S.IC TA31136FNG IC-FR6000 MAIN UNIT 5 pieces
8820001210 Screw 2438 screw IC-FR6000 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 the problem is internal before disassembling
the repeater.
2. DO NOT open the repeater until the repeater 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
repeater 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 repeater 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 repeater.
REPAIR NOTES
INTRODUCTION CAUTION
UNIT ABBREVIATIONS:
F=FRONT UNIT
M=MAIN UNIT
CN=CONNECT UNIT
CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTION
SECTION 4 OPTIONAL UNIT INSTALLATION
SECTION 5 CIRCUIT DESCRIPITON
5-1 RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-3 OTHER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-4 CPU (M: IC20) PORT ALLOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
SECTION 6 ADJUSTMENT PROCEDURES
6-1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-2 FREQUENCY ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6-3 TRANSMIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6-4 RECEIVE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
SECTION 7 PARTS LIST
SECTION 8 MECHANICAL PARTS
SECTION 9 BOARD LAYOUTS
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM
FRONT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
MAIN UNIT (1/3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
MAIN UNIT (2/3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
MAIN UNIT (3/3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
CONNECT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
1 - 1
SECTION 1 SPECIFICATIONS
MGENERAL [FR6000] [FR6100]
• Frequency coverage 400–470 MHz [USA-01], [EXP-01]
450–520 MHz [USA-02], [EXP-02] 400–470 MHz
• Conventional channels max. 32 ch
• Type of emission Wide
16K0F3E/11K0F3E/11K0F7E/1K0F7D/
11K0F7W
Wide 16K0F3E
– Middle 14K0F3E
Narrow 8K50F3E/8K10F1E/8K10F1D Narrow 8K50F3E
Digital 4K00F1E/4K00F1D/4K00F3E/6K00F3E
• Antenna impedance 50 Ω(Nominal)
• Operating temperature range –22˚F to +140˚F (–30˚C to +60˚C) –25˚C to +55˚C
• Power supply requirement
(nominal) 13.6 V DC (Negative ground) 13.2 V DC (Negative ground)
• Current drain (Approx.) Receiving 500 mA (stand-by), 1900 mA (max.audio)
Transmitting 15 A (at 50 W) Transmitting 7.0 A (at 25 W)
• Dimensions
(Projections not included) 19 1/32 (W)×3 15⁄32 (H)×10 1⁄4(D) in. 483 (W)×88 (H)×260 (D) mm
• Weight (Approx.) 12 Ib 9/16 oz. 5.6 kg
MTRANSMITTER [FR6000] [FR6100]
• Output power 50 W 25 W
• Modulation Variable reactance frequency modulation
• Max. frequency deviation ±5.0 kHz (Wide) – ±4.0 kHz (Middle)
±2.5 kHz (Narrow)
• Frequency stability ±0.5 ppm ±0.5 kHz
• Spurious emissions 80 dB typ. 0.25 μW (≤1 GHz), 1.00 μW (>1 GHz)
• Adjacent channel power Wide 73 dB typ. Wide 73 dB min.
– Middle 73 dB min.
Narrow 67 dB typ. Narrow 65 dB min.
Digital 65 dB typ. Digital 60 dB min.
• Audio harmonic distortion 1% typ. (at AF 1 kHz 40% deviation)
• Audio frequency response +2 dB to –8 dB of 6 dB/oct. Wide/Middle from 300 Hz–3000 Hz
Narrow from 300 Hz–2550 Hz
• FM Hum and noise
(300 Hz–3000 Hz, 750 us) Wide 50 dB typ.
Narrow 45 dB typ.
1 - 2
MRECEIVER [FR6000] [FR6100]
• Receive system Double-conversion superheterodyne system
• Intermediate frequencies 1st IF: 46.35 MHz, 2nd IF: 450 kHz
• Sensitivity Wide/Narrow
0.25 μV typ. at 12 dB SINAD Wide/Middle/Narrow
–10 dBμmax. at 12 dB SINAD
Digital
0.25 μV typ. at 5% BER Digital
0 dBμV emf max. at 1% BER (PN9)
• Squelch sensitivity
(at threshold) Wide/Narrow
0.25 μV typ. Wide/Middle/Narrow
0.25 μV typ.
• Adjacent channel selectivity Wide 78 dB typ. Wide 70 dB min.
– Middle 70 dB min.
Narrow 56 dB typ. Narrow 60 dB min.
Digital 63 dB typ. Digital 45 dB min.
• Spurious response Wide/Narrow 70 dB Wide/Middle/Narrow 70 dB min.
Digital 65 dBµV emf Digital 70 dBµ Vemf min.
• Intermodulation Wide 70 dB min.
– Middle 70 dB min.
Narrow 70 dB min.
Digital 71 dBµV emf min.
• Hum and noise Wide 50 dB typ. Wide 45 dB min.
– Middle 43 dB min.
Narrow 45 dB typ. Narrow 40 dB min.
Digital 55 dB typ. Digital 55 dB min.
• Audio output power
(at 5% distortion with a 4 Ω load)
4.0 W typ. 3.5 W min.
• Audio output impedance 4 Ω
Specifications are measured in accordance with TIA–603–B (for Wide and Narrow) or EN 300 166 (Digital) for FR6000.
Specifications are measured in accordance with EN 300 086 (for Wide, Middle and Narrow) or EN 300 166 (Digital) for FR6100.
All stated specifications are subject to change without notice or obligation.
2 - 1
SECTION 2 INSIDE VIEWS
RXVCOs
• MAIN UNIT
(TOPVIEW)
• MAIN UNIT
(BOTTOM VIEW)
Power SW (VCC line)
(Q57)
8V regulator (8V line)
(IC27)
AF AMP
(IC34)
FUNCTION
(Ref.No.)
2nd IF filter (Wide)
(FI1)
2nd IF filter (Narrow)
(FI2)
CPU
(IC20)
5V regulator (DSP5V line)
(IC39)
CPU clock
(X5)
FUNCTION
(Ref.No.)
PLL IC (TX lopp)
(IC3)
TXVCOs
Optional digital unit slot
TX power AMP
(IC22)
1st mixer (DBM)
(D62, L27, 32)
5V regulator (CPU5V)
(IC30)
5V regulator (+5V line)
(Q41)
EEPROM
(IC21)
DSP
(IC12)
AF SW
(IC35)
PLL IC (RX loop)
(IC4)
Ref. OSC
(X1)
8V regulator (T8V line)
(Q45)
Discriminator
(X3)
IF IC
(IC5)
FUNCTION
(IC40)
Liner codec
(IC8)
2 - 2
• FRONT UNIT
FRONT CPU
(IC503)
CLOCK OSC
(X501)
LCD DRIVER
(IC500)
ANALOG SW
(IC506)
AF POWER AMP.
(IC509)
SPEAKER SW
(Q508)
3 - 1
SECTION 3 DISASSEMBLY INSTRUCTION
1. Removing the front panel
qUnscrew 11 screws from the top cover.
3. Removing the MAIN UNIT
qUnscrew 9 screws, and remove the cover.
(If you are going to install an optional unit, see page 4-1 for the installation.)
2. Removing the MAIN UNIT assembly
qUscrew 5 screws which settles the MAIN UNIT assembly.
P
0
P
1
P
2
P
3
P
4
P
0
P
1
P
2
P
3
P
4
P
0
P
1
P
2
P
3
P
4
PWR TX RX
PWR TX RX
PWR TX RX
wUnscrew 7 screws from the front panel.
eDisconnect the cable from the MAIN UNIT assembly, and remove the front panel.
wTurn the MAIN UNIT assembly upside down.
(To be continued to next page)
3 - 2
MAIN
MAIN
J9
J9
J9
J4
J4
Unscrew
ANT case
Unsolder
ANT case
Flat cable
Disconnect
Disconnect
Black
Black
Black
Black
Red
Red
Red
Red
W4
W4
Unsolder 2 points
Unsolder 4 points
Unscrew
Clip
15 screws
wUnsolder 2 points at the ANT cases.
eUnscrew 4 screws from the ANT cases,
and remove them.
rDisconnect the flat cabe from J4 and the
speaker cable from J9.
tUnsolder 2 points at the bottom of ANT connectors.
yUnsolder 4 points at the PA module leads.
uUnscrew 2 screws from W4.
iRemove the clip from the side of chassis.
oUnscrew 15 screws from the MAIN UNIT, then take off
the MAIN UNIT PCB from the chassis.
4 - 1
SECTION 4 OPTIONAL UNIT INSTALLATION
PWR TX RX
qDisassembly the repeater until the MAIN UNIT is exposed. (See the page 3-1)
wModify the patterns on the MAIN UNIT as below.
eRemove the protective paper of optional unit, and install it to the J1 as below.
Aand F; Cut the pattern B; Short the pattern
rReplace the cover, screws, etc. to recover the whole assembly.
NOTE:When uninstalling the scrambler unit
Be sure to recover the disconnected or connected points, otherwise no TX modulation or AF output is available.
Install UT-109R or UT-110R as follows.
<MAIN UNIT (bottom side)>
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