Page 2 - INTRODUCTION; DO NOT expose the transceiver to rain, snow or any liquids.; using such test equipment.
Communication EquipmentHimmelgeister Str. 100, D-40225 Düsseldorf, GermanyPhone : 0211 346047 Fax : 0211 333639 URL : http://www.icomeurope.com Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K.Phone : 01227 741741 Fax : 01227 741742URL : http://www.icomuk.co.uk Zac de la Plaine, Rue Brindejonc des Mou...
Page 3 - TABLE OF CONTENTS
TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS 3-1 DISASSEMBLY INSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 3-2 OPTIONAL UNIT INSTALLATIONS . . . . . . . . . . . . . . . . ....
Page 4 - RECEIVER
1 - 1 SECTION 1 SPECIFICATIONS All stated specifications are subject to change without notice or obligation. Frequency coverage Type of emission Number of channels Power supply requirement TX at High Current drain at Low (approx.) RX rated audio stand-by Frequency stability Usable temperature range ...
Page 5 - • MAIN UNIT
2 - 1 SECTION 2 INSIDE VIEWS • MAIN UNIT Power amplifier(Q1: 2SK2974) Antenna swtching circuit(D1, D2, D8: MA77) TOP VIEW BOTTOM VIEW RF amplifier(Q12: 3SK293) VCO circuit 1st mixer Q13: 3SK239A [OTHER] 3SK320 B Low-pass filter circuit TX/RX switch(D3, D4: MA77) Mic amplifier circuit APC IC3A: NJM29...
Page 6 - -1 DISASSEMBLY INSTRUCTION; • REMOVING THE CHASSIS PANEL
3 - 1 SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS 3-1 DISASSEMBLY INSTRUCTION • REMOVING THE CHASSIS PANEL 1 Unscrew 1 nut A , and remove 1 knob B . 2 Unscrew 2 screws C . 3 Take off the chassis in the direction of the arrow. 4 Unplug J6 to separate front panel and chassis. • REMOVING THE MAIN UNI...
Page 7 - -2 OPTIONAL UNIT INSTALLATIONS; Remove the option cover.
3 - 2 3-2 OPTIONAL UNIT INSTALLATIONS 1 Remove the option cover. 2 Connect one of UT-96, UT-105, UT-108, UT-109, UT-110, and UT-111 optional unit to J5. 3 Replace the option cover to the chassis-hole. Option cover Option unit J5
Page 8 - SECTION 4 CIRCUIT DESCRIPTION; -1 RECEIVER CIRCUITS; type diode switching system.; • 2nd IF and demodulator circuits
4 - 2 SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT Received signals are passed through the low-pass filter (L1,L2, C1–C5, C8). The filtered signals are applied to the λ ⁄ 4 type antenna switching circuit (D2, D8). The antenna switching circuit functions as a lo...
Page 9 - -2 TRANSMITTER CIRCUITS; • APC circuit
4 - 3 4-1-5 AF CIRCUIT AF signals from the FM IF IC (IC2, pin 9) are applied to themute switch (IC4, pin 1) via the AF filter circuit (IC3b, pins 6,7). The output signals from pin 11 are applied to the AFpower amplifier (IC5, pin 4) after being passed through the[VOL] control (R143). The applied AF ...
Page 10 - -4 POWER SUPPLY CIRCUITS; VOLTAGE LINE; LINE; HV; DESCRIPTION; The voltage from the attached battery pack.
4 - 4 The signal output from the power detector circuit (D32, D33)is applied to the differential amplifier (IC3a, pin 2), and the“T4” signal from the expander (IC10, pin 11), controlled bythe CPU (IC8), is applied to the other input for reference. When the driving current is increased, input voltage...
Page 12 - SECTION 5 ADJUSTMENT PROCEDURES; REQUIRED TEST EQUIPMENT; SYSTEM REQUIREMENTS
5 - 1 SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREPARATION When you adjust the contents on page 5-5 or 5-6, SOFTWARE ADJUSTMENT, the optional CS-F3G ADJ ADJUSTMENT SOFTWARE (Rev. 1.0 or later), OPC-478 CLONING CABLE and a JIG CABLE (see illustration at page 5-2) are required. ■ REQUIRED TEST EQUIPMENT EQ...
Page 13 - ¥ JIG cable; JIG cable; • Screen display exampe
5 - 2 ¥ JIG cable + ( CLONE) — ( GND) + ( SP) — ( SPE) 3-conductor 3.5(d) mm plug OPC-478 JIG cable to IC-F3GT/GS [SP] jack CS-F3G ADJ Rev.2.0 File COM 1: OPEN Option Connect Reload (F5) Disp para [A / D]VIN : 197 : C5h : 7.73 V TEMPS : 190 : BEh : 32.23 'C LVIN : 98 : 62h : 1.92 V SD : 0 : 00h : 0....
Page 14 - • Connection; ¥ DC power cable connections; Top view
5 - 3 to an RS-232C port Personalcomputer to [MIC] to [SP] JIG cable DB9 female plug (incl. level converter circuit) • Connection to the antenna connector RF power meter 0.1–10 W/50 Ω Frequency counter Attenuator 40 dB or 50 dB FM deviation meter Standard signal generator 0.1 µ V to 32 mV (–127 dBm ...
Page 15 - RF power meter
5 - 4 5-2 PLL ADJUSTMENT PLL LOCKVOLTAGE 1 2 • Operating frequency : 136.000 MHz (L-band)146.000 MHz (H-band) • Receiving • Transmitting MAIN Connect a digital multi meter to check pointLV. 2.0 V 1.5–2.5 V MAIN L11 Verify ADJUSTMENT ADJUSTMENT CONDITIONS UNIT LOCATION VALUE UNIT ADJUST MEASUREMENT A...
Page 16 - -3 SOFTWARE ADJUSTMENT
5 - 6 1 2 1 2 1 1 • Operating frequency: 136.000 MHz (L-band)146.000 MHz (H-band) • High/Low switch : Low • Connect the RF power meter or 50 Ω dummy load to the antenna connector. • Transmitting • Transmitting • Operating frequency: 136.000 MHz (L-band)146.000 MHz (H-band) • High/Low switch : Low • ...
Page 17 - SOFTWARE ADJUSTMENT – continued
5 - 7 Minimum distortion level 12 dB SINAD At the point where the audio signals just appears. 1 • Operating frequency: 136.000 MHz (L-band)146.000 MHz (H-band) • Connect a standard signal generator to the antenna connector and set as: Frequency : 136.000 MHz (L-band): 146.000 MHz (H-band) Level : 5....
Page 18 - SECTION 6
[MAIN UNIT] [MAIN UNIT] IC1 1130007610 S.IC µPD3140GS-E1 (DS8) IC2 1110003490 S.IC TA31136FN (D,EL) IC3 1110003780 S.IC NJM2902V-TE1 IC4 1130008090 S.IC BU4066BCFV-E1 IC5 1110001810 S.IC TA7368F (TP1) IC6 1110005350 S.IC NJM2870F05-TE1 D 1180001740 S.IC TK11250BMCL [OTHER] IC7 1130009680 S.IC HN58X2...
Page 23 - Screw abbreviations
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY 7 - 1 REF. NO. ODER NO. DESCRIPTION QTY. MP1 8210016541 2251 T-front panel-1 [F3GT] 1 8210016671 2251 S-front panel-1 [F3GS] 1 MP2 8930050890 2251 terminal holder 1 MP3 8010017991 2251 chassis-1 1 MP4 8210016570 2251 rear panel 1 MP5 8930050870 2251 release...
Page 25 - TRANSISTOR AND FET’S
SECTION 8 SEMI-CONDUCTOR INFORMATION 8 - 1 2SC5085 Y(Symbol: MCY) 2SK2974(Symbol: K2974) 2SK1069 4(Symbol: FJ4) 2SC4116 GR(Symbol: LG) 2SA1577 Q(Symbol: HQ) 2SB1132 R(Symbol: BARB) 3SK239 A(Symbol: XR) 2SC4215 O(Symbol: QO) 2SK2973(Symbol: K1) DTC144 TU(Symbol: 06) DTC144 EUA(Symbol: 26) UN911 H(Sym...
Page 26 - VHF
SECTION 9 BOARD LAYOUTS 9 - 1 9-1 GENERAL AND EIA/TIA VERSIONS (EXCEPT W/N-TYPE) • MAIN UNIT (TOP VIEW) DS1 VHF MC1 DS2 DS3 R204 R205 R155 R170 C215 C255 C256 R169 C233 C234 C295 R208 C21 1 R257 C286 C301 R175 R249 R151 R264 R186 R185 C293 R35 C55 C64 R89 C56 R90 R81 R80 R79 R84 R13 C26 C24 C25 R15 ...
Page 28 - V H F
9 - 3 9-2 ETS/CEPT VERSION • MAIN UNIT (TOP VIEW) DS1 V H F MC1 DS2 DS3 R204 R205 R155 R170 C215 R169 C233 C234 C295 R208 C21 1 R257 C286 C301 R175 R249 R151 R264 R186 R185 C293 R35 C55 C64 R89 C56 R90 R81 R80 R79 R84 R13 C26 C24 C25 R15 R12 R1 1 R10 C23 R14 R16 R177 C136 R114 R117 C137 R115 C217 C1...
Page 32 - BC-137 OPTIONAL DESKTOP CHARGER INFORMASION; 0-2 DISASSEMBLY INFORMATION; • CONNECTION
10 - 1 SECTION 10 BC-137 OPTIONAL DESKTOP CHARGER INFORMASION REF. NO. ODER NO. DESCRIPTION QTY. MP1 8010018030 2338 case 1 MP2 8110007080 2338 cover 1 MP3 8930050920 2327 spacer 1 MP4 8930039620 Leg cushion (A) 4 MP5 8810008660 Screw BT M3 x 8 NI-ZU 1 [CHASSIS UNIT] 10-1 PARTS LIST 10-2 DISASSEMBLY...
Page 34 - BLOCK DIAGRAM; NOTE
11 - 1 SECTION 11 BLOCK DIAGRAM ANT LPF LPF ANT SW D1 MA77D2 MA77D8 MA77 Q1 2SK2974 Q2 2SK2973 Q3 2SC5085 Y D3 MA77D4 MA77 PLL IC Q4 2SC4215 O Q6 2SC4215 O IC1 UPD3140GS VCOQ7 2SC5085 YQ8 2SC5085 Y REF OPTION UNIT J5 AXN330C038 2TONE or 5TONE PTT MIC AF REG AF AMP PTT CONT Q17 UN911H VCC IC5 TA7368F...
Page 35 - VOLTAGE DIAGRAM
VCC R5 S5 MIC CPU5 VCC 5V T5 R5 S5 VOLIN VOLOUT AFOUT MIC SP VCC CPU5 5V T5 R5 S5 CPU5S5T5R5 CPU5 C2230.01 D34MA8056 M E only C2240.01 D R131470 Q17UN911H R130100 k C1470.047 PTT C15410 C 8 9 10 IC3CNJM2902V C1330.1 C2090.1 R1771 k C1250.0022 C1240.01 C2170.1 R1763.9 k R9327 k R10910 k C134220 P R10...
Page 37 - ype
R160150 VCC T5 R1333 R15100 R19 00 R5 C2718P 4 C4215 O R171 k C865 P ] C915 P L80.1 H S5 D4MA77 D3MA77 C230.001 R111.2 k R123.3 k C240.001 C260.001 R144.7 k R161 Q22SK2973 C170.001 C256 P C2227 P C28030 P A 47 P [OTHER] R910 k C2984.7 R7100 L2882 nH Q32SC5085 Y L70.1 H C2050.001 C2880.001 C2040.001 ...
Page 40 - VHF FM TRANSCEIVERS
SERVICE MANUAL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13713IZ-C1V- q © 2000 Icom Inc. VHF FM TRANSCEIVERS
Page 41 - UHF FM TRANSCEIVERS
SERVICE MANUAL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13713IZ-C1U- 1 © 2000 Icom Inc. UHF FM TRANSCEIVERS
Page 45 - TOP VIEW
2 - 1 SECTION 2 INSIDE VIEWS • MAIN UNIT Antenna switcing circuit(D1: 1SV307) 1st mixer(Q13: 3SK239A) VCO circuit D/A converter(IC10: M62363FP-650C) EEPROM IC7: HN58X2432TI [OTHER]HN58X2464TI[100 channel version] CPU(IC8: HD6433876B50H) Low pass filter circuit Antenna switcing circuit(D2, D8: MA77) ...
Page 48 - ND IF AND DEMODULATOR CIRCUITS
4 - 2 SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT The antenna switching circuit functions as a low-pass filterwhile receiving. However, its impedance becomes very highwhile D2 and D8 are turned ON. Thus transmit signals areblocked from entering the receiver ci...
Page 49 - APC CIRCUIT
4 - 3 4-1-5 AF CIRCUIT AF signals from the FM IF IC (IC2, pin 9) are applied to themute switch (IC4, pin 1) via the AF filter circuit (IC3b, pins 6,7). The output signals from pin 11 are applied to the AFpower amplifier (IC5, pin 4) after being passed through the[VOL] control (R143). The applied AF ...
Page 52 - • IBM PC compatible computer with an RS -232C serial port; ADJUSTMENT SOFTWARE INSTALLATION; - Quit all applications when Windows is running.; STARTING SOFTWARE ADJUSTMENT; Boot up Windows, and turn the transceiver power ON.
5 - 1 SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREPARATION When you adjust the contents on page 5-5 or 5-6, SOFTWARE ADJUSTMENT, the optional CS-F3G ADJ ADJUSTMENT SOFTWARE (Rev. 2.0 or later), OPC-478 CLONING CABLE and a JIG CABLE (see illustration at page 5-2) are required. ■ REQUIRED TEST EQUIPMENT EQ...
Page 53 - JIG CABLE; SCREEN DISPLAY EXAMPLE
5 - 2 JIG CABLE + ( CLONE) ( GND) + ( SP) ( SPE) 3-conductor 3.5(d) mm plug OPC-478 JIG cable to IC-F4GT/GS [SP] jack CS-F3G ADJ Rev.2.0 File COM 1: OPEN Option Connect Reload (F5) Disp para [A / D]VIN : 197 : C5h : 7.73 V TEMPS : 190 : BEh : 32.23 ’C LVIN : 98 : 62h : 1.92 V SD : 0 : 00h : 0.00 V R...
Page 54 - CONNECTION; DC POWER CABLE CONNECTIONS
5 - 3 to an RS-232C port Personalcomputer to [MIC] to [SP] JIG cable DB9 female plug (incl. level converter circuit) CONNECTION to the antenna connector RF power meter 0.1 10 W/50 Frequency counter Attenuator 40 dB or 50 dB FM deviation meter Standard signal generator 0.1 V to 32 mV ( 127 dBm to 17 ...
Page 67 - U H F
SECTION 9 BOARD LAYOUTS 9 - 1 9-1 LOW BAND • MAIN UNIT (TOP VIEW) DS1 C291 R186 C443 C573 C561 C556 R1 16 C665 R530 R457 R502 C558 R507 C217 R518 C283 R142 C282 R244 C664 R527 C572 C495 R528 L441 C137 R30 Q25 R97 D4 R44 Q34 R14 Q401 Q403 R32 IC1 IC2 X3 C63 R89 R83 R90 C496 C1 12 C1 13 C159 C122 C289...
Page 71 - UHF
9-3 470–500 MHz AND HIGH BANDS • MAIN UNIT (TOP VIEW) DS1 C291 R186 C443 C573 C561 C556 R1 16 C665 R530 R457 R502 C558 R507 C217 R518 C283 R142 C282 R244 C664 R527 C572 C495 R528 L441 C137 R30 Q25 R97 D4 R44 Q34 R14 Q401 Q403 R32 IC1 IC2 X3 C63 R89 R83 R90 C496 C1 12 C1 13 C159 C122 C289 C551 C405 R...
