Instruction/ maintenance manual of the product IC-F3GS Icom
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SER VICE MANUAL 6-9-16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan S-13605II-CD © 1999 Icom Inc. VHF FM TRANSCEIVERS.
6-9-16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan Phone : 06 6793 5302 F ax : 06 6793 0013 Communication Equipment Himmelgeister Str . 100, D-40225 Düsseldorf, Germany Phone : 0211 346047 F ax : 0211 333639 URL : http://www .icomeurope.com Unit 9, Sea St.
T ABLE OF CONTENTS SECTION 1 SPECIFICA TIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBL Y AND OPTION INSTRUCTIONS 3-1 DISASSEMBL Y INSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 1 3-2 OPTIONAL UNIT INST ALLA TIONS .
1 - 1 SECTION 1 SPECIFICA TIONS ‘ ‘ GENERAL • Frequency coverage : 136.000–150.000 MHz • T ype of emission : 16K0F3E (W-type), 8K50F3E (N-type) • Number of channels : 32 ch (16 channels × 2 banks: 2-BANK version), 16 ch (16 channel version) • Power supply requirement : 7.
2 - 1 SECTION 2 INSIDE VIEWS • MAIN UNIT P ower amplifier (Q1: 2SK2974) Antenna swtching circuit (D1, D2, D8: MA77) T OP VIEW BO TTOM VIEW RF amplifier (Q12: 3SK293) VCO circuit 1st mixer (Q13: 3SK2.
3 - 1 SECTION 3 DISASSEMBL Y AND OPTION INSTRUCTIONS 3-1 DISASSEMBL Y INSTRUCTION • REMOVING THE CHASSIS P ANEL 1 Unscrew 1 nut A , and remove 1 knob B . 2 Unscrew 2 screws C . 3 T ake off the chassis in the direction of the arrow . 4 Unplug J6 to separate front panel and chassis.
3 - 2 3-2 OPTIONAL UNIT INST ALLA TIONS 1 Remove the option cover . 2 Remove the bottom protective paper of spoge. 3 Connect one of UT -96, UT -105, UT -109, UT -1 10, UT -1 1 1, and UT -108 optional unit J5. 4 Replace the option cover to the chassis-hole.
4 - 1 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).
4 - 2 4-1-5 AF CIRCUIT AF signals from the FM IF IC (IC2, pin 9) are applied to the mute switch (IC4, pin 1) via the AF filter circuit (IC3b, pins 6, 7). The output signals from pin 1 1 are applied to the AF power amplifier (IC5, pin 4) after being passed through the [VOL] control (R143).
4 - 3 When the driving current is increased, input voltage of the differential amplifier (pin 2) will be increased. In such cases, the differential amplifier output voltage (pin 1) is decreased to reduce the driving current. 4-3 PLL CIRCUIT A PLL circuit provides stable oscillation of the transmit fre- quency and receive 1st LO frequency .
4 - 4 4-5 PORT ALLOCA TIONS 4-5-1 CPU (IC8) Pin number 1 9 11 12 15 16 17 18 19 21 36–38 44–47 49 50 51 52 53 54 55 56 57 58 59 Port name VIN RESET CSIFT SCK DAST CLIN CLOUT PLST NOIS BUSY OPV3– OPV1 KR3– KR0 RMUT MMUT DUSE S5C R5C T5C TXC AFON LIGT ESCK ESDA Description Input port for battely voltage detection.
5-1 PREP ARA TION When you adjust the contents on page 5-5 or 5-6, SOFTW ARE ADJUSTMENT , the optional CS-F3G ADJ ADJUSTMENT SOFTW ARE (Rev . 1.0 or later), OPC-478 CLONING CABLE and a JIG CABLE (see illustration at page 5-2) are required.
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 .1.0 File COM 1: OPEN Option Connect Reload (F5) Disp para TCXO [A / D] V I N : : : 189 BDh 7 . 41V TEMPS : : : 186 BAh 30 .
5 - 3 to an RS-232C por t P ersonal computer to [MIC] to [SP] JIG cable DB9 female plug (incl. level con verter 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.
5 - 4 5-2 PLL ADJUSTMENT PLL LOCK VOL T AGE 1 2 • Operating frequency: 146.000 MHz • Receiving • T ransmitting MAIN Connect a digital multi meter to check point LV.
5 - 5 1 2 1 2 1 1 • Operating frequency: 146.000 MHz • High/Low switch : Low • Connect the RF power meter or 50 Ω dummy load to the antenna connector .
5 - 6 Minimum distortion level 12 dB SINAD At the point where the audio signals just appears. 1 • Operating frequency : 146.000 MHz • Connect a standard signal generator to the antenna connector and set as: Frequency : 146.000 MHz Level : 3.2 µV* (–97 dBm ) Modulation : 1 kHz Deviation : ± 3.
6 - 1 S.=Surface mount IC1 1 130007610 S.IC µPD3140GS-E1 (DS8) IC2 1 1 10003490 S.IC T A31 136FN (D,EL) IC3 1 1 10003780 S.IC NJM2902V -TE1 IC4 1 130008090 S.IC BU4066BCFV -E1 IC5 1 1 10001810 S.IC T A7368F (TP1) IC6 1 180001740 S.IC TK1 1250BMCL IC7 1 130009680 S.
6 - 2 S.=Surface mount R58 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 k Ω ) R59 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω ) R61 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω ) R62 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 k Ω ) R63 7030003680 S.
6 - 3 S.=Surface mount R241 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 M Ω ) R242 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 M Ω ) R243 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 M Ω ) R244 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 k Ω ) R245 7030003680 S.
6 - 4 S.=Surface mount C156 403001 1600 S.CERAMIC C1608 JB 1C 104KT -N C158 4550006200 S.T ANT ALUM ECST0JY106R C159 4030006850 S.CERAMIC C1608 JB 1H 471K-T -A C160 4030006900 S.CERAMIC C1608 JB 1E 103K-T -A C161 4030006900 S.CERAMIC C1608 JB 1E 103K-T -A C162 4030006900 S.
SECTION 7 MECHANICAL P ARTS AND DISASSEMBL Y 7 - 1 RE F . NO . ODER NO. DESCRIPTION QTY . MP1 8210016750 2251-T front panel [F3GT] 1 8210016740 2251-S front panel [F3GS] 1 MP2 8930050890 2251 terminal.
7 - 2 UNIT abbreviation (C): CHASSIS P ARTS, (M): MAIN UNIT MP4 (M) MAIN unit IC-F3GS parts MP7 (C) MP1 (C) MP1 (C) MP20 (C) MP37 (C) MP21 (C) MP3 (M) DS1 (M) EP2 (M) MP1 (M) MP2 (M) MP18 (C) MP40 (C).
SECTION 8 SEMI-CONDUCT OR INFORMA TION 8 - 1 2SC5085 Y (Symbol: MCY) 2SK2974 (Symbol: K2974) 2SK1069 4 (Symbol: FJ4) 2SC4116 GR (Symbol: LG) 2SA1577 Q (Symbol: HQ) 3SK239 A (Symbol: XR) 2SC4215 O (Sym.
SECTION 9 BOARD LA YOUTS 9 - 1 MAIN UNIT • TOP VIEW DS1 MC1 DS2 DS3 R204 R205 R155 R170 C215 R169 C233 C234 C295 R208 C211 R257 C286 C301 R175 R249 R151 R264 R186 R185 C293 R35 C55 C64 R89 C56 R90 R.
9 - 2 • BOTTOM VIEW C277 R252 C138 R258 R143 J2 J3 MP5 S1 S3 Q21 Q22 L25 X1 IC10 IC7 IC8 C198 IC12 Q33 R236 R238 R237 S2 C158 C155 FI2 C174 C173 C72 C298 C281 L4 L2 L1 L16 L17 L24 D29 L31 C287 C285 .
10 - 1 SECTION 10 BlLOCK DIAGRAM ANT LPF LPF ANT SW D1: MA77 D2: MA77 D8: MA77 Q1: 2SK2974 Q2: 2SK2973 Q3: 2SC5085 Y D3: MA77 D4: MA77 PLL IC Q4: 2SC4215 O Q6: 2SC4215 O IC1: UPD3140GS VCO Q7: 2SC5085 Y Q8: 2SC5085 Y REF X1: CR-664 (15.
VCC R5 S5 MIC CPU5 VCC 5V T5 R5 S5 VOLIN VOLOUT AFOUT MIC SP VCC CPU5 5V T5 R5 S5 CPU5 S5 T5 R5 CPU5 C223 0.01 C224 0.01 D R131 470 Q17 UN911H R130 100 C147 0.1 PTT C154 10 C 8 9 10 IC3C NJM2902V C133 0.1 C209 0.1 R177 1 k C125 0.0022 C124 0.01 C217 0.
VCC R178 3.9 k C129 15 R120 68 k R145 1 M R 99 1 2 k R100 1.8 k D26 DAN202K Q15 2SB1132 R R126 10 k C149 0.1 C146 0.001 C145 10 R122 2.7 k 4 5 6 3 2 1 Q16 XP6501 AB C140 0.1 R121 1 k C139 0.1 NC 1 VCC 2 NC 3 VIN 4 RIPPLE 5 NF 6 PHASE 7 PREGND 8 PWGND 9 POUT 10 IC5 TA7368F C171 0.
ANT R160 150 L26 3225 µ H VCC T5 R13 33 R15 100 T5 VCC R28 100 R27 470 C39 0.001 R19 100 R21 100 R23 100 C46 0.001 1 3 2 4 5 6 Q11 XP6501 AB R31 1 k R175 1 R151 47 k C233 0.001 CP1 (LV check ponit) R30 4.7 k C50 10 C300 0.001 C301 0.001 C211 0.1 R185 1 k R45 100 Q34 2SK1069 4 R184 10 k C234 0.
VCC R5 S5 MIC CPU5 VCC 5V T5 R5 S5 VOLIN VOLOUT AFOUT MIC SP VCC CPU5 5V T5 R5 S5 CPU5 S5 T5 R5 CPU5 C223 0.01 C224 0.01 D R131 470 Q17 UN911H R130 100 C147 0.1 PTT C154 10 C 8 9 10 IC3C NJM2902V C133 0.1 C209 0.1 R177 1 k C125 0.0022 C124 0.01 C217 0.
6-9-16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan Phone : 06 6793 5302 F ax : 06 6793 0013 Communication Equipment Himmelgeister Str . 100, D-40225 Düsseldorf, Germany Phone : 0211 346047 F ax : 0211 333639 URL : http://www .icomeurope.com Unit 9, Sea St.
SER VICE MANUAL 6-9-16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan S-13605II-CD © 1999 Icom Inc. VHF FM TRANSCEIVERS.
An important point after buying a device Icom IC-F3GS (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Icom IC-F3GS yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Icom IC-F3GS - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Icom IC-F3GS you will learn all the available features of the product, as well as information on its operation. The information that you get Icom IC-F3GS will certainly help you make a decision on the purchase.
If you already are a holder of Icom IC-F3GS, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Icom IC-F3GS.
However, one of the most important roles played by the user manual is to help in solving problems with Icom IC-F3GS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Icom IC-F3GS along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
