Manuale d’uso / di manutenzione del prodotto IC-4008MKII del fabbricante Icom
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SER VICE MANUAL UHF FM TRANSCEIVER LPD FM TRANSCEIVER.
INTRODUCTION DANGER ORDERING P ARTS REP AIR NOTES This service manual describes the latest service information for the at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 5 V . Such a connection could cause a fire hazard and/or electric.
T ABLE OF CONTENTS SECTION 1 SPECIFICA TIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASEMBL Y INSTRUCTION SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 1 SPECIFICA TIONS 1 - 1 All stated specifications are subject to change without notice or obligation. Number of channels T ype of emission Frequency stability Frequency resolution Power supply requirements (negative ground) Current drain Operating temperature range Number of CTCSS frequency Dimensions (proj.
CHANNEL FREQUENCY LIST CTCSS FREQUENCY LIST 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 433.0750 433.1000 433.1250 433.1500 433.1750 433.2000 433.2250 433.2500 433.2750 433.3000 433.3250 433.3500 433.3750 433.4000 433.4250 433.4500 433.
SECTION 2 INSIDE VIEWS 2 - 1 • MAIN UNIT • RF UNIT T+3 Regurator (Q28: 2SB798) +3 Regurator (IC6: S-81230SG) R+3 Regurator (Q18: 2SA1586) CPU (IC1: µ PD753036GK) Audio amplifier (IC9: NJM2070M) E.
SECTION 3 DISASEMBL Y INSTRUCTIONS 3 - 1 A B B MAIN unit RF unit E C D F H G • REMOVING THE REAR P ANEL Unscrew 1 screw , and 4 screws . Remove the rear panel in the direction of the arrow . • REMOVING THE RF UNIT Remove 1 knob, , and unscrew 1 nut, .
4 - 1 SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT (RF UNIT) Received signals from the antenna connector are passed through the low-pass filter (L5, L6, C8–C12). The filtered sig- nals are applied to the λ ⁄ 4 type antenna switching circuit (D7, D101, D102, L4, L206, C209, C210).
4 - 2 • PLL circuit Shift register Prescaler Phase detector Loop filter Programmable counter Programmable divider X1 21.25 MHz to the FM IF IC (IC2, pin 1) VCO Buffer Q7 6 7 8 STB IC1 (PLL IC) CK DA.
4 - 3 LINE BA TT 3V +3V R+3 T+3 DESCRIPTION The voltage from the connected battery pack. Common 3 V converted from the BA TT line at the 3V regulator circuit (IC6). The circuit outputs the voltage regardless of the power ON/OFF condition. Common 3 V converted from the BA TT line at the +3V regulator circuit (Q25, D4).
5 - 1 SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREP ARA TION REQUIRED TEST EQUIPMENT EQUIPMENT DC power supply RF power meter (terminated type) Frequency counter FM deviation meter DC voltmeter GRADE AND RANGE Output voltage : 4.
5 - 2 5-2 ADJUSTMENT REFERENCE FREQUENCY OUTPUT POWER FM DEVIA TION SQUELCH ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT V ALUE POINT UNIT LOCA TION UNIT ADJUST 433.925000 MHz 9 mW [IT A/–1] 470 mW [CSA/–1] ± 4.8 kHz 10 mV ± 3 dB Audio signal disappears.
5 - 3 RF GND J1 RF test por R50 FM deviati Reference frequency adjustment R206 Output power adjustment TEST C63 ENTERING THE ADJUSTMENT MODE q T urn the transceiver power OFF . w While connecting the "TEST" to GND, then turn power ON.
SECTION 6 P ARTS LIST 6 - 1 IC1 1 140006881 S.IC µPD753036GK-524-BE9 IC2 1 1 10002820 S.IC NJM2100M-T1 IC3 1 140004450 S.IC X24C01AS-3.0T6 IC5 1 1 10004710 S.IC S-80928ANMP-DDR-T2 IC6 1 180001 150 S.IC S-81230SG-QB-T1 IC9 1 1 10002810 S.IC NJM2070M-T1 Q1 1590000720 S.
6 - 2 C8 4510004630 S.ELECTROL YTIC ECEV1CA100SR C9 4030006850 S.CERAMIC C1608 JB 1H 471K-T -A C10 4030006850 S.CERAMIC C1608 JB 1H 471K-T -A C1 1 4030006850 S.CERAMIC C1608 JB 1H 471K-T -A C15 403001 1600 S.CERAMIC C1608 JB 1C 104KT -N C17 4550006880 S.
6 - 3 L206 6200005690 S.COIL ELJRE 18NG-F L207 6200005690 S.COIL ELJRE 18NG-F L208 6200003640 S.COIL MLF1608K 100K-T R1 7030003430 S.RESISTOR ERJ3GEYJ 821 V (820 Ω ) R2 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 k Ω ) R3 7030003470 S.RESISTOR ERJ3GEYJ 182 V (1.
6 - 4 C21 1 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A J1 6910007660 CONNECTOR IMSA-9210B-1-02T J2 6510018170 S.CONNECTOR 4-175643-4 W4 7030003860 S.JUMPER ERJ3GE JPW V W5 7030003860 S.JUMPER ERJ3GE JPW V W6 7030003860 S.JUMPER ERJ3GE JPW V W8 7030003860 S.
SECTION 7 MECHANICAL P ARTS AND DISASSEMBL Y 7 - 1 Screw abbreviations A, B0, BT : Self-tapping PH: Pan head FH: Flat head BiH: Bind head NI: Nickel SUS: Stainless ZK: Black SP1 2510000960 Speaker K03.
7 - 2 UNIT abbreviation (C): CHASSIS P ARTS, (RF): RF UNIT , (M): MAIN UNIT MP1 (C) SP1 (C) MP10 (C) MP12 (C) EP1 (M) DS2 (M) MP7 (C) MP5 (C) MAIN unit MP20 (C) MP25 (C) MP14 (C) MP23 (C) MP11 (C) MP1.
SECTION 8 SEMI-CONDUCT OR INFORMA TION 8 - 1 • DIODES • TRANSISTOR AND FET’S 2SA1362 GR (Symbol: AEG) 2SC4213 B (Symbol: AB) 2SC5108 Y (Symbol: MC) DT A1 14 EU (Symbol: 16) UN51 19 (Symbol: 6K) .
SECTION 9 BOARD LA YOUTS 9-1 MAIN UNIT • TOP VIEW (IC-4008A) 9 - 1 C20 R98 R74 R76 C53 C60 IC5 C55 C88 R78 W7 C80 R42 R12 R46 R50 C5 R31 R1 18 C3 R9 R1 10 C25 C7 C79 C4 Q6 R13 Q3 R10 R202 C35 C34 R4.
9 - 2 • BOTTOM VIEW (IC-4008A) R58 R88 R54 Q10 C21 C47 C44 C72 R87 C59 R106 C82 R1 12 C46 C87 R103 C51 R62 C92 C94 R97 R63 C45 R79 C86 R68 R69 IC3 Q23 R86 IC9 J4 J1 J3 S1 X1 Q5 C6 C29 R6 R7 R5 R4 R4.
9 - 3 C57 IC6 C20 Q14 IC5 C63 Q27 Q1 1 R26 R49 W3 C74 D303 D5 DS2 C55 C17 C52 C18 C48 C49 R23 R1 14 R302 R89 C9 C42 C75 R90 C71 Q28 D101 C97 R74 R76 R98 C53 C60 C81 C96 D2 DS1 C95 R61 C15 R22 R27 C50 .
9 - 4 R58 IC9 C6 IC2 C29 C73 R39 R99 R100 R101 R35 C91 C10 R14 R64 W1 W4 Q1 R60 R108 R2 R4 R5 Q2 Q12 Q29 C28 R102 R40 R32 R105 C26 C27 C40 R95 C1 1 R34 R33 R65 R6 R7 C24 R53 R66 C1 C85 R30 C83 R51 R52.
9 - 5 9-2 RF UNIT • TOP VIEW R69 R67 R71 R66 C89 R68 C96 L6 L204 L203 D103 L5 L23 C90 C36 C4 R12 C70 C23 R86 Q14 Q13 D9 D8 C81 C82 C48 C43 C86 IC1 R64 R65 R32 R27 C13 R60 R19 R4 C28 C3 L25 C67 R58 Q.
9 - 6 • BOTTOM VIEW C79 C83 X1 C63 R52 R88 C15 C16 C69 C55 R36 C57 L14 C64 R34 C52 R31 C53 Q6 L13 R54 C50 R30 R29 C20 L1 1 D4 D5 R35 R33 L12 Q7 Q12 C84 C56 C51 R210 Q8 C60 FI1 FI2 W8 Q1 R3 R2 FI3 J1.
SECTION 10 BLOCK DIAGRAM 10 - 1 CTCIN D/A REMIN PTT2 MICSW RMUT AFON RXV TXV POWER LCD DS2 VOLT SENS RESET IC5 X2 CDBCA450CX24 (450 kHz) FI3: CFWM450E CERAMIC BPF (450 kHz) FMDET S DET IF AMP NOISE DET IC2 TA31136FN 2SC4215 Q13: 2SC4081 Q14: 2SA1586 D8 : 1SS355 D9 : 1SS355 FL-298 Q6: 2SC5108 D4,D5: 1SV284 X1 CR-632 (21.
SECTION 1 1 VOL T AGE DIAGRAM 11 - 1 1 1-1 MAIN UNIT LON: 0 LOF: 3.02 LON: 2.82 LOF: 0 C: 3.02 T: 3.04 R: 2.40 C: 3.82 C: 3.10 C: 1.65 T: 0 R: 0.86 C: 1.95 T: 0 R: 2.97 C: 3.12 T: 0 R: 3.02 C: 3.10 T: 1.58 R: 0 T: 3.05 R: 0 T: 1.46 R: 0 C: 0 C: 3.12 T: 1.
1 1-2 RF UNIT 11 - 2 T: 0 R: 2.96 T: 0 R: 0.72 T: 0 R: 1.86 T: 0 R: 2.60 T: 0 R: 1.76 T: 0 R: 0.72 T: 0 R: 1.98 C: 2.83 C: 2.80 T: 0 R: 1.12 T: 1.16 R: 0 T: 0.42 R: 0.36 T: 0.72 R: 0 T: 1.38 R: 0 T: 1.51 R: 0 T: 0.75 R: 0.84 T: 1.20 R: 0 T: 0 R: 0.82 T: 0.
6-9-16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan Phone : 06 6793 5302 Fax : 06 6793 0013 Communication Equipment Himmelgeister Str . 100, D-40225 Düsseldorf, Germany Phone : 021 1 346047 Fax : 021 1 333639 URL : http://www .icomeurope.com Unit 9, Sea St.
6-9-16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan A-5505I-S Printed in Japan © 1998 by Icom Inc..
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Icom IC-4008MKII è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Icom IC-4008MKII - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Icom IC-4008MKII imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Icom IC-4008MKII ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Icom IC-4008MKII, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Icom IC-4008MKII.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Icom IC-4008MKII. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Icom IC-4008MKII insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
