IcomメーカーIC-F21Sの使用説明書/サービス説明書
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SER VICE MANUAL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13717IZ-C1 © 2001 Icom Inc. UHF FM TRANSCEIVERS.
INTRODUCTION DANGER ORDERING P ARTS REP AIR NOTES This service manual describes the latest service information for the IC-F21/IC-F21S at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V .
T ABLE OF CONTENTS SECTION 1 SPECIFICA TIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBL Y INSTRUCTIONS SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 - 1 SECTION 1 SPECIFICA TIONS ‘ ‘ GENERAL • Frequency coverage : 440.000–470.000 MHz • T ype of emission : 16K0F3E (at 25 kHz), 8K50F3E (at 12.5 kHz) • Number of channels : 2 ch (IC-F21S), 16 ch (IC-F21) • Power supply requirement : 7.
2 - 1 SECTION 2 INSIDE VIEWS • MAIN UNIT Power amplifier (Q1: 2SK2974) Antenna switching circuit D1: 1SV307 D9, D10: MA77 T OP VIEW BO TTOM VIEW RF amplifier (Q15: 3SK293) VCO circuit FM IF IC (IC3:.
3 - 1 SECTION 3 DISASSEMBL Y INSTRUCTIONS • REMOVING THE CHASSIS ¡ Unscrew 1 nut, A , and remove 2 knobs, B , C . ™ Unscrew 2 screws, D . £ Unscrew 2 screws, H , to separate the Jack panel and the Front panel. ¢ T ake off the chassis in the direction of the arrow .
4 - 1 SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT The antenna switching circuit functions as a low-pass filter while receiving. However , its impedance becomes very high while D9 and D10 are turned ON. Thus transmit signals are blocked from entering the receiver circuits.
4 - 2 The applied AF signals are amplified at the AF power ampli- fier circuit (IC4, pin 4) to obtain the specified audio level. The amplified AF signals output from pin 10 as “AFOUT”signal are applied to the internal speaker (SP1) as the “SP” signal via the [SP] jack when no plug is connected to the jack.
4 - 3 4-3 PLL CIRCUIT 4-3-1 GENERAL A PLL circuit provides stable oscillation of the transmit fre- quency and receive 1st LO frequency . The PLL output com- pares the phase of the divided VCO frequency to the refer- ence frequency .
4 - 4 4-4 POWER SUPPL Y CIRCUITS VOL T AGE LINE LINE HV VCC CPU5V T5V R5V S5V +5V VCO5V DESCRIPTION The voltage from the attached battery pack. The same voltage as the HV line (battery volt- age) which is controlled by the power swtich ([VOL] control).
4 - 5 Pin number 61 62 Port name BDET BA TV Description Input port for the battery’s type detec- tion. Input port for battely voltage detection. 4-5-3 D/A CONVERTOR IC (IC9) Pin number 2, 3, 10, 1 1 14 15 22 Port name T1–T4 REF BAL DEV Description Output tunable bandpass filters con- trol signals.
5-1 PREP ARA TION When you adjust the contents on page 5-5 or 5-6, SOFTW ARE ADJUSTMENT , the optional CS-F21 ADJ ADJUSTMENT SOFTWARE (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-F4GT/GS [SP] jack CS-F21 ADJ Rev .1.0 File COM 1: OPEN Option Connect Reload (F5) Disp para [A / D] VIN : 197 : C5h : 7.73 V TEMPS : 190 : BEh : 32.23 ’ C L VIN : 98 : 62h : 1.
5 - 3 to an RS-232C port Personal computer 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.
5 - 4 C54 PLL lock voltage adjustment (RX) TOP VIEW RF power meter C68 PLL lock voltage adjustment (TX) LV PLL lock voltage check point 5-2 PLL ADJUSTMENT PLL LOCK VOL T AGE 1 2 3 4 • Operating frequency: 440.000 MHz • Receiving • T ransmitting • Operating frequency: 470.
5 - 5 1 1 2 3 1 2 1 • Operating frequency: 470.000 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: 440.000 MHz • Channel spacing :Narrow • Connect a standard signal generator to the antenna connector and set as: Frequency : 440.
6 - 1 S.=Surface mount Q1 1590003020 S.TRANSISTOR XP4216-(TX) R1 7210003060 V ARIABLE TP76N00N-15F-10KA-2251 R2 7030003380 S.RESISTOR ERJ3GEYJ 331 V (330 Ω ) R3 7030003410 S.RESISTOR ERJ3GEYJ 561 V (560 Ω ) F1 5210000710 S.FUSE KAB 2402 322 NA29 DS1 5040002070 S.
6 - 2 S.=Surface mount L13 6200009360 S.COIL 0.45-1.4-3TL 1 1N L14 6200002860 S.COIL NL 252018T -4R7J L15 6200002800 S.COIL ELJFC R68M-F L16 6200009360 S.COIL 0.45-1.4-3TL 1 1N L17 6200002860 S.COIL NL 252018T -4R7J L18 6200005680 S.COIL ELJRE 15NG-F L19 6200008240 S.
6 - 3 S.=Surface mount R152 7030003940 S.RESISTOR ERJ3GEYF 104 V (100 k Ω ) R153 7030003940 S.RESISTOR ERJ3GEYF 104 V (100 k Ω ) R154 7030003940 S.RESISTOR ERJ3GEYF 104 V (100 k Ω ) R155 7030003200 S.RESISTOR ERJ3GEYJ 100 V (10 Ω ) R156 7030003800 S.
6 - 4 S.=Surface mount C86 4030006860 S.CERAMIC C1608 JB 1H 102K-T -A C87 4030007090 S.CERAMIC C1608 CH 1H 470J-T -A C88 403001 1600 S.CERAMIC C1608 JB 1C 104KT -N C89 4030006860 S.CERAMIC C1608 JB 1H 102K-T -A C90 403001 1770 S.CERAMIC C1608 CH 1H 060B-T -A C91 403001 1770 S.
[MAIN UNIT] S.=Surface mount C261 4030007090 S.CERAMIC C1608 CH 1H 470J-T -A J1 6910013720 CONNECTOR IMSA-9230B-04Z120-T [F21] only J2 6910013730 CONNECTOR IMSA-9230B-07Z120-T J3 6510021900 S.
SECTION 7 MECHANICAL P ARTS AND DISASSEMBL Y 7 - 1 RE F . NO . ODER NO . DESCRIPTION QTY . SP1 2510001 100 Speaker 036D0601 1 MP1 8210017710 2458 front panel 1 MP4 8930054680 2458 release button 1 MP6.
7 - 2 UNIT abbreviation (C): CHASSIS P ARTS, (M): MAIN UNIT MAIN unit MP29 (C) MP28 (C) MP15 (C) MP10 (C) MP21 (C) MP32 (C) MP8 (C) MP29 (C) MP29 (C) MP12 (C) MP9 (C) MP22 (C) IC-F21S MP34 (C) MP27 (C.
SECTION 8 SEMI-CONDUCT OR INFORMA TION 8 - 1 2SC5085 Y (Symbol: MCY) 2SK1829 (Symbol: K1) 2SC5107 O (Symbol: MFO) 2SK880 Y (Symbol: XY) 2SK2974 (Symbol: K2974) 2SC4116 GR (Symbol: LG) 2SA1577 Q (Symbo.
SECTION 9 BOARD LA YOUTS 9 - 1 9-1 MAIN UNIT • TOP VIEW C196 C194 R159 R222 R223 R224 R122 R151 C223 R143 EP7 R145 R146 R187 R195 R188 R193 R190 C226 C242 C243 R215 R224 R225 R226 C245 C246 R155 C19.
9 - 2 • BOTTOM VIEW R133 R130 R227 R229 R63 D12 C100 C99 D9 L19 D1 C106 D10 MP5 C98 R60 R61 R59 C96 C7 L4 C165 R103 C118 R73 L1 C257 C114 C115 R71 R125 C119 R75 C121 R127 R118 IC2 Q21 IC9 Q16 R84 R8.
9 - 3 9-2 SW-A AND SW-B UNITS • TOP VIEW SW-A UNIT F1 Q1 DS1 B5603C SW-B UNIT F1 Q1 DS1.
9 - 4 • BOTTOM VIEW SW-A UNIT SW-B UNIT R2 R3 R1 S1 J2 to the MAIN unit J2 17 CBI0 VOLOUT VOLIN VCC RLED TLED GND J1 to the MAIN unit J1 14 CBI0 CBI1 CBI2 CBI3 S1 W1 R2 R3 W2 R1 B5604C J2 to the MAI.
10 - 1 SECTION 10 BC-146 OPTIONAL DESKTOP CHARGER INFORMA TION RE F . NO . ODER NO . DESCRIPTION QTY . MP1 8010018620 2447 case (A) 1 MP2 81 10007450 2447 cover 1 MP3 8930039620 Leg cushion (A) 4 MP4 .
10 - 2 10-3 VOL T AGE DIAGRAM 10-4 BOARD LA YOUT MP1 R1 68 J1 HEC0470-01-230 R2 1k DS1 TLG124A MP2 C : 13.8V N : 13.8V C : 7.2V N : 13.8V C : 9.2V N : 13.
11 - 1 SECTION 1 1 BLOCK DIAGRAM ANT 440–470MHz Q1 2SK2974 D1 1SV307 D9,D10 MA77 D2 RB706F-40 Q2 2SK2973 Q3 2SC3585 Q4 2SC5107 VCO SW D3,D4 MA77 Q7 2SC5107 Q5 2SC5107 Q8 DTC144EU Q9 XP1214 R5V S5V RX VCO Q12 XP6501 Q10 2SC5085 D5 HVU350 Q11 2SC5085 D7 HVU350 LVIN BUFF Q13 2SK880 IC1 MB15A02PFV1 X1 CR-671A REF BAL DEV 15.
R47 47 EP3 VCC CBI0 CBI1 CBI2 CBI3 RLED TLED CBI0 C156 0.001 C157 0.001 C158 0.001 C159 0.001 W12 W13 EP7 VOLIN VOLOUT C93 47 P C94 47 P F1 F2 C84 0.001 R51 47 k D19 HVC362 C85 2.
EP3 C3 7 P C5 4 P C6 0.001 R1 82 k D1 1SV307 L1 14 nH L2 14 nH C8 47P C9 0.001 C18 47 P C20 0.001 R2 100 L3 0.82 H T5V C34 47 P C35 47 P R11 10 R13 220 L6 EXCCL3225U W14 C45 47 P R16 10 k R19 100 R22 220 R24 100 C260 0.001 T5V VCO5V VCO5V C48 0.001 R5V S5V RSSI R5V VCO5V S5V RSSI RSSI C60 0.
R47 47 EP3 VCC CBI0 CBI1 CBI2 CBI3 RLED TLED CBI0 C156 0.001 C157 0.001 C158 0.001 C159 0.001 W12 W13 EP7 VOLIN VOLOUT C93 47 P C94 47 P F1 F2 C84 0.001 R51 47 k D19 HVC362 C85 2.
12 - 2 12-2 SW-A AND SW-B UNITS • SW-A UNIT TP76N00N-15F-10KA-2251 R1 Q1 XP4216 R3 560 R2 330 DS1 LNJ107W5PRW C 1 1 2 2 3 4 4 8 5 S1 CP10 CP11 CP12 CBI0 CBI1 CP13 CBI2 CBI3 CP8 HV F1 6 5 4 3 2 1 CP3 CP4 CP5 CP6 CP2 CP9 CBI0 VOLIN VOLOUT VCC RLED TLED GND CP1 G R RX (SQL OPEN) 4.
INTRODUCTION DANGER ORDERING P ARTS REP AIR NOTES This service manual describes the latest service information for the IC-F21/IC-F21S at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V .
SER VICE MANUAL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13717IZ-C1 © 2001 Icom Inc. VHF FM TRANSCEIVERS.
デバイスIcom IC-F21Sの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Icom IC-F21Sをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはIcom IC-F21Sの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Icom IC-F21Sの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Icom IC-F21Sで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Icom IC-F21Sを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はIcom IC-F21Sの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Icom IC-F21Sに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちIcom IC-F21Sデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
