IC-V8 Service Manual
Contents
1. H z e El R261 il Ral ara JI RI i e ap B OOOO OMA DAM s 5 Be tl y s ae E f W8 RI50 C373 B dab a will ct aus 107 CA E XR du a Q PUTAS 111228 h ur 2 e 2 Td E Ma E EMU T JE m E pum PEST at BALL by gg Fra T B oa aj a g CO CD al AC ML TEE en FI E B B E e wa Rd C216 d Ri F Soe jc gg m BS g L20 5 sr d p38l E TEF E E B BE 2 RE E Q 9 H E x biis EEE 4 15 ji I MZ S 6 fl 31 m a E c145 BE BEEE cs lu B re Jd BE e 238 Rad 2327 grele ss FESS 8888 6565 MICROPHONE LI a 1111282858 a8 30 16 OPTIONAL UNIT J5 SECTION 10 BC 146 OPTIONAL DESKTOP CHARGER INFORMATION 10 1 PARTS2. P C Board f FW Hhq 18 g e IS 5105 5104 JE stt R35 E tap 5120 5116 5112 5108 A E mm E E z B 8 y eme ee e E E ED R82 1117 E Ral E m me Ed az 8 B E O 21 E O EQ B Ziq BE T co E EM IG 29 Q E 289 5115 In E G 7 RUD CT ma 5 Re foo nim 85 ug PT IT ELO GND B TUT E 5121 s117 513 5109 B L r R30 R2 H UU 58 L H t ol E B C26 fa RIA jd ica ME g a RG pg ca RI gal 05 ES 5119 R169 mY 8 BA Ge K mU n Re L R53 dil ANTENNA Co j 3 E E QUE e O NIZ 64 R65 5122 5118 Std 5110 E 5123 Z B 399 L18 E C90 3
3. vec VCC T VCC T5 m MP5 z 0 001 EXCCL3225U Q11 XP4601 TX 1 99V 4 R337 4 9 RX 0V ANT SW5V 1 8M 5 y 2 ain T T 1 38 PSVCO PSVCO M Ad t ci9L c14 i C289 c21 V x1 t R310 R305 R23 R19 TX 4 06V iu Se 007 Zi 9999 J d Gn La D1 08 L2 LI T R21 100 330 2 37V R13 RX 0V L32 C390 MA77 0 001 50nH 60nH SOK SCI TRE R48 R49 C69 W13 EA TE 4 T w C300 1k 47k idu 680 Ris 33 aon 27p 0 001 50nH A Ne m O TEH WV OPV1 WE 10k 47k 68p R30 cgo 4 75V 0 001 R304 ca57 L T peen 100 sssi Jl m TM gt t pi Y DTC F 4 7k R20 L c363 220 0 001 0 96V v si si R W MW h ill 33 Z Ll4 X R306 180k 0 001 47k C356 0 001 AS 1 if 150p RS D33 ose e OPV2 OPV2 FC D7 c64 82nH T T c26 R14 C24 R2Z 17 n Q1 2 2 RB706F 40 uu l i 1 34
4. vec voc Ts T5 R5 Q11 XP4601 3 4 68V TX 1 99V SWSV R337 4 JB 1 8M za RX 0V PSVCO PSVCO W AL 4 00V 6 Al SCK SCK R362 us 1 45V t t Ral R310 R305 OPVI MK opvi aie gt Me wis 21 250 MHz IW 4 4 C300 1k 47k 100 Bes Si W DTC NE W AW HL O csi 3 cso ITN 0 001 T 2904 R304 C357 L I 0 001 7 gt p L14 R306 R20 C363 R311 220 0 001 J 0 96V 1 21V OPV2 OPV2 FC pz P BORA 330 180k 0 001 47k C356 0 001 _ V e so so RE0 or Hvcs7ea 1 0 Q51 OPV3 OPV3 470k 0 001 R41 C30 0 74V R309 8 2k c33 L 3 DTC144EU R313 R303 0 001 CIRQ CIRQ d 10 F cei Ge2 22p 4 js mo GND ceo L P B C367 1 83V R18 CCS ccs a 0901 T x 2SC4406 Mu j Fr d SO OPT3 OPT3 PLST 4 R264 T R22 0 74V 5 68k C358 68k REM Figs 0 001 390 100k we 6 w T J OPT2 OPT2 e 7 C295 Br C368 C28 AFOUT 0 01 J HOMI Lord d 9997 Um 12p UNLK 82 10 fl cal TO OPTI OPT1 w9 pd a iT 5p OPTIONAL 23 R185 1k Gaus DISCIN C293 IC1 LV2105V 0 001 R32 0 75 UNIT SCO sico t MW T a T d gt 390 p 0 73V Q6 C234 2SC4406 MN 0 001 R136 pn Q34 100 F DE
5. SECTION 12 VOLTAGE DIAGRAM
6. ER a RIT u jr M J2 EXT MIC SP1 I SPEAKER EXT SPEAKER The combination of this page and the previous page shows the unit layout in the same configuration as the I P C Board BOTTOM VIEW aa
7. L33 PLL lock voltage adjustment PLL lock voltage check point Bottom view SECTION 6 PARTS LIST MAIN UNIT ORDER NO MAIN UNIT DESCRIPTION ORDER DESCRIPTION 1130008350 S IC 1110003490 S IC 1110005340 S IC 1130008090 S IC 1110001810 S IC 1130010490 S IC 1140009920 S IC 1190000350 S IC 1130009110 S IC 1180000800 S IC 1560001150 S FET 1560001160 S FET 1530003230 S TRANSISTOR 1530003220 S TRANSISTOR 1530003220 S TRANSISTOR 1530003220 S TRANSISTOR 1590001650 S TRANSISTOR 1580000710 S FET 1580000710 S FET 1530003220 S TRANSISTOR 1520000450 S TRANSISTOR 1590001190 S TRANSISTOR 1590001920 S TRANSISTOR 1510000510 S TRANSISTOR 1510000510 S TRANSISTOR 1530002690 S TRANSISTOR 1590000660 S TRANSISTOR 1560000810 S FET 1590000720 S TRANSISTOR 1590000430 S TRANSISTOR 1590000430 S TRANSISTOR 1590001530 S TRANSISTOR 1590000430 S TRANSISTOR 1590001650 S TRANSISTOR 1510000510 S TRANSISTOR 1520000450 S TRANSISTOR 1590001470 S TRANSISTOR 1590001170 S TRANSISTOR 1590001650 S TRANSISTOR 1530002690 S TRANSISTOR 1790000620 S DIODE 1790000620 S DIODE 1790000620 S DIODE 1790000620 S DIODE 1750000770 S VARICAP 1790000620 S DIODE 1720000780 S VARICAP 1720000780 S VARICAP 1720000780 S VARICAP 17900016
8. Front panel REMOVING THE MAIN UNIT CD Unsolder 3 points D and unscrew 1 nut 2 Unscrew 2 screws E 2 screws H and 6 screws silver 2 mm to separate the chassis and the MAIN unit Take off the MAIN unit in the direction of the arrow black 2 mm x 2 silver 2 mm x 6 black 2 mm x 2 Shield cover Guide holes Chassis 3 2 OPTIONAL UNIT INSTALLATIONS Remove the option cover 2 Remove the bottom protective paper of spoge B Connect the UT 108 optional unit to J5 4 Replace the option cover to the chassis hole Option cover SPONGE i Parts name 1556 sponge Order No 8930013545 SECTION 4 CIRCUIT DESCRIPTION 4 1 RECEIVER CIRCUITS 4 1 1 ANTENNA SWITCHING CIRCUIT Received signals passed through the low pass filter L1 L2 C1 C5 The filtered signals are applied to the 1 4 type antenna switching circuit D1 D2 D8 L15 C76 The antenna swtiching circuit functions as a low pass filter while transmitting However its impedance becomes very high while D2 and D8 are turn ON Thus transmit signals are blocked from entering the receiver circuits The antenna switching circuit employs a 1 4 type diode swtiching sys tem The passed signals are then applied to the RF amplifi er circuit 4 1 2 RF CIRCUIT The RF circuit amplifies signals within the range of frequen cy coverage and filters out of band signals
9. Q6 and buffer Q5 amplifiers and then applied to the PLL IC IC1 pin 6 The PLL IC contains a prescaler programmable counter programmable divider phase detector charge pump etc The entered signal is divided at the prescaler and program mable counter section by the N data ratio from the CPU The divided signal is detected on phase at the phase detec tor using the reference frequency If the oscillated signal drifts its phase changes from the ref erence frequency causing a lock voltage change to com pensate for the drift in the oscillated frequency A portion of the VCO circuit is amplified at the LO Q6 and buffer Q4 amplifiers and is then applied to the receive 1st mixer or transmit pre drive amplifier circuit via the TX RX swtiching diode D3 D4 44 OTHER CIRCUITS 4 4 1 TONE SQUELCH CIRCUIT A portion of the detected audio signals from the DET line are passed through the tone filter Q53 The filtered signal is then applied to the CPU IC1 pin 94 via the CTCIN sig nal and is compared with the programmed tone signal The CPU IC1 outputs control signals as CTCC signal to the AF mute and AF regulator circuits to open the squelch when a matched tone signal is received The programmed subaudible tone signal is output from the CPU IC1 pin 91 directly when transmitting with a tone 4 5 POWER SUPPLY CIRCUITS VOLTAGE LINE LINE DESCRIPTION The voltage from t
10. S CERAMIC S TANTALUM S CERAMIC S CERAMIC CONNECTOR CONNECTOR S CONNECTOR S CONNECTOR LCD S LED S LED MICROPHON S SWITCH S SWITCH S SWITCH ENCODER S JUMPER S JUMPER S JUMPER S JUMPER S JUMPER S JUMPER PCB LCD CONTACT S BEAD S BEAD S BEAD TEMSVA 1A 106M 8L C1608 JB 1C 104KT N C1608 CH 1H 220J T A C1608 CH 1H 470J T A C1608 CH 1H 220J T A C1608 JB 1H 102K T A C1608 CH 1H 270J T A C1608 CH 1H 220J T A TEMSVA 1A 106M 8L TEMSVB2 1A 336M 8R C1608 JB 1C 104KT N C1608 CH 1H 180J T A C1608 CH 1H 330J T A C1608 CH 1H 040C T A TEMSVA 1A 475M 8L C1608 JB 1H 332K T A C1608 JB 1H 222K T A HSJ1122 010010 HSJ1456 01 220 AXN330C038P BM02B ASRS TF TTR5515 UPFDHW LNJ310M6URA LNJ310M6URA KUC3523 040245 JPM1990 2711R JPM1990 2711R JPM1990 2711R TP70N00E20 15F 1903 ERJ3GE JPW V ERJ3GE JPW V ERJ3GE JPW V ERJ3GE JPW V ERJ3GE JPW V ERJ3GE JPW V B 5649B SRCN 2251 SP N W MMZ1608Y 102BT MMZ1608Y 102BT MMZ1608Y 102BT S Surface mount SECTION 7 MECHANICAL PARTS AND DISASSEMBLY CHASSIS PARTS ACCESSORIES ODER NO DESCRIPTION A REF NO ODER NO DESCRIPTION 6510022460 Ant connector BNC R162 3310002840 Antenna FA B2bE 0880000840 Battery BP 208 8210017981 2251 T front panel B 1 8930050890 2251 terminal holder 8010017990 2251 chassis 8210016570 2251 rear panel 8930050870 2251 release button 8310051450 2251 window plate 8930051350 2251 jack rubber 82100165
11. and power Q1 amplifiers is controlled by the APC circuit to stabilize the output power 4 2 4 APC CIRCUIT The APC Automatic Power Control circuit IC3a Q37 pro tects drive and power amplifiers from excessive currents and selects HIGH or LOW output power The output voltage from the power detector circuit D32 D33 is applied to the differential amplifier IC3a pin 2 and the T3 signal from the D A convertor IC10 pin 10 is applied to the other input for reference When the driving current increases the input voltage of the differential amplifier IC3a pin 2 will be increased In such cases the differential amplifier output voltage pin 1 is decreased to reduce the drive current Q37 is controlled by the TXC signal from the CPU IC8 pin 55 to select HIGH or LOW output power APC CIRCUIT VCC O T5 O RF signal from Q3 7 Q2 qi L4 C278 C287 PLL IC IC1 Pre drive ids Bug LPF gt io antenna PS5 TXC APC control circuit Power detector circuit D32 D33 4 3 PLL CIRCUITS 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 The PLL output frequency is controlled by the divided ratio N data of a programmable divider The PLL circuit contains the VCO circuit Q50 D38 The oscillated signal is amplified at the LO
12. n p sue sm zm DAB oat R239 a l tA MA2S111 4 USA only AN KS4 PCON _ l l 1 gt 4 4 4 120 S121 gt s122 s123 Fx 0 P3 D44 T I I MA2S111 1 6 i R240 R348 i 1k i d 2 1 MAIN UNIT DC POWER SUPPLY 7 2 V 12 1 MEASURMENT TESTER INNER RESISTANCE MORE THAN 50 k 0 V voc vec T5 E 15 MP5 3 L26 EXCCL322
13. 16 1 LPF R87 R88z y5 Noise mil Active detector Wi E i Y filter Limiter ixer X1 21 25 MHz SQLIN signal from the FM D A convertor IC10 pin 23 detector gt IC2 TA31136F 416 AF signal DET n oa Toite Jem eee X3 R84 L 1st IF from the IF amplifier Q14 NOIS signal to the CPU pin 19 L SD signal to the CPU pin 98 The AF signals are applied to the AF power amplifier circuit 1C5 pin 4 to obtain the specified audio level The amplified AF signals output from pin 10 are applied to the internal speaker SP1 via the speaker jack CHASSIS unit J3 when no plug is connected to the jack 4 1 6 SQUELCH CIRCUIT A squelch circuit cuts out AF signals when no RF signals are received By detecting noise components in the AF signals the squelch switches the analog swtich A portion of the AF signals from the FM IF IC IC2 pin 9 are applied to the active filter section IC2 pin 8 where noise components are amplified and detected with an internal noise detector The trigger circuit converts the detected signals to a HIGH or LOW signal and applies this from pin 13 to the CPU IC8 pin 19 as the NOIS signal When the CPU receives a HIGH level NOIS signal the CPU controls the RMUT line to cut the AF signals at the analog swtich IC IC4 At the same time the AFON line controls the AF regulator circuit Q15 Q16 to cut out the VCC power source for the AF power amplifier IC5 4
14. 3 SEGIO T T 2 C165 M 4 Ho P94 SEG37 l 72 SEG9 R225 gud R228 3 0 001 R101 cle4 5 Heer mdi SEG8 100k 44 15k 4 D6 iM 15p m Gi P32 SEG35 29 SESZ zr OSC1 P91 SEG34 6144 XOUT 8 osc2 P90 SEG33 l SEGS 0 001 RESET s l ses 67 SEG4 R226 10 RES PO7 SEQ32 6 SEG3 e BE NMI P86 SEG31 68 ae Sek SHET 5 P20 IRQA ADTRG P85 SEG30 22 SEQ ins T5 P21 SCK1 IC8 P84 SEG29 55 PSSCO so 30 14 P22 SH HD6433876B49H P83 SEG28 55 PSVCO PSVCO SEG1 15 P23 801 P82 SEG27 PLST PLST SEG2 T8 P24 SCK3 P81 SEG26 l GG OPVT OPVI SEG3 P25 RXD P80 SEG25 17 59 ESDA SEG4 CLOUT ER P77 SEG24 l 23 SEG5 CCS 18 D 8 ESCK es A t aki ss P17 TRQS TMIF H AFON SEG7 M CIRQ 26 piginas p74 SEG21 l 28 ANN SEG8 S1 21 TROT P73 SEG20 LAA 1k S2 55 P15 RGT n z Q noe 54 D SEG P14 D G G G G P72 SEG19 WANG SEG10 OPTI z p13 TMIG B U UI U bl L U P71 SEG18 AAN tj SEGI OPTS cmi er SEE es en P11 TMOFL 233354544554485858558065405 R246 R245 0 001 R17 SEG13 En PreK 8 88 EEE SERRE EBS 100k SP 100k e COL SR low Se 3 TOS AIBR Aa b H 1 TTR5515 UPFDHW Raso R349 100k x P P P P P Lam SEGT6 1M USA only a AAN MMUT SEG17 R346 100k CPUS 3 3 8 S 5 8 el y 9 S 2 2 8 H AN RMUT SEGIE R235 22M il SEG20 age qM CONT mE SEG21 9 ez ole iit SEG22 AMV R198 56k i a a OMI ENS COM2 eel EJEJE R193 R196 COMS 5 518 Slo 56k m COM4
15. 4 A i AN WV H Q21 28A1576 Q54 2SA1576 Q11 XP4601 INITIAL KEY MATRIX Q22 25A1576 D40 D49 MA2S111 EEPROM R349 100k T5 R5 PS5 VCO5 REG REG REG REG IC7 BR24C16FV ATA T A A TT LED Q25 2SC4116 RESET 4 COMMON INE IC11 80942 RX LINE b sw5 4PCON lt RE 4 cont N Gee cre ya DS2 LNJ310M6URA TX LINE Q57 XP1501 D39 MA2S111 Q56 UN9213 DS3 LNJ310M6URA IC12 S 81350 CPUS REG MAIN UNIT 11 1 SECTION 12 VOLTAGE DIAGRAM
16. AW cu Hes C82 R58 100k a R67 C95 FN 0 033 0 001 0 001 0 001 100k 0 001 7 20V ere cu guo L ons L ons L 1C2 TA31136 caos L 100k 09017 09017 g J j gt Men 2 2k 220 0 1 0 vec vec id p L L gt gt 77 NOIS 2 sp kanal VI SET EXT SPEAKER WV VCC AFOUT AS IC12 il Q15 2SB1132 AF ON 6 46V __AF OFF 0V d 1 X GND S 81350HG KD t 1 ps Pes ld 1 Rize 100 DISCIN R97 220k R115 120k mizo 10 z PS5 W MW DET 4 C2120 01 R98 330k C1852708 2 S7 C151 C152 Ci69 C168 L C167 Wy R44 1 90V IC5 TA7368F 47p 0 047 0 0017 0 0017 47p D27 if IC3 R177 C149 C150 RE RB706F 40 MW C128 10k C213 2 2 R107 150k 0 022 10 T l NJM12902V 1k R95 1 5M EE n l 5 R131 C154 jt ge C132 C124 C125 ANN W j Q57 2SB1132 470 10 0 0056 10 6217 goi T 00022 11 C2140 033 R113 68k IC3 1 145 Gie L NEE ae Q31 iri 8 f R145 gt C139 R121 10 01 47k C299 4 97V 1 9 7 R112 9 w R159 NJM12902V 0 033 470k Eq T k Q16 470p DTC144TU XP1501 C147 126 5 1M p 9 z R169 R170 C136 z XP6501 f z 0 047 Wok 609 R1046 R105 C134 220 6 0087 R257 2 2 6 39k F 10k 0 0056 100k 8 gt kid L c399 1 MW auec 3 3 a 2 dla a Edie z 5 100k 470 ok EM M12902V 2 lt VOLOUT gp 99099 R174 15k CLOUT oe a 3 9k R94 CLIN E 360 eae ay MN jejejej Bla U 3 pe w IC3 NJ IC4 BU4066BCFV GLOUT a OFF 0V 2 0 1 150k MICOUT CLIN i so PPE E zlo p LEDC ON 3 18V AN DET SW5V T EE E ps2 DS3 4 99V 4 7k R335 Q56 SW5V CTCSS 4 CPU
17. MHz Q58 IC3A NJM12902 UP HO EMO e XP4601 ONO N TP70N00E2015 b LOOP sw Q34 2SK1069 DC AMP QI UN911E X3 CDBCA450CX24 PTT Y R5 cov P FH FL 298 D11 HVU350B FIS FL 298 D12 HVU350B Q12 3SK274 D9 HVU350B IC10 5 6 7 8 MIX NOISE AMP M62363FP IF AMP FM DET IF BPF MC1 KUC3523 S DET OSC AMP lene SQL SW AF FIL 1C2 TA31136FN Q13 3SK274 Q14 2SC4406 21 700 MHz mains AY L PTT 1 ERAMIC BPF Fl2 SFPC450E 450 kHz Q53 XP4601 IC10 1 3 2 M62363FP D A TONE FIL F IC3B NJM12902 MIC JACK D OPTION J2 HSJ1122 SELECT HEF Q43 DTC144EU Q16 XP6501 C IC3C NJM12902 IC3D NJM12902 ANALOG SWICH CSHIFT RM Q15 2SB1132 v CPU SHIFT CHASSIS UNIT wo LPF B IC8 HD6433876B49H A IC5 TA7368F 0 4 M62363FP X2 CR 663 Q38 DTC144EU Ng DA lt 9 2 MHz AMP lt J3 HSJ1456 Q31 DTC144 SP JACK D27 RB706F BUFF T5 R5 PS5 VCO5
18. S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S TANTAL S CERAM S CERAM ccc c Ogzg000000000000 0000000 E E Oo0o amp SoOo000000000000000000000000000000000000000000000S amp 200000000 C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 CH 1H 151J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 JB 1H 102K T A TEMSVA 1C 475M 8 C1608 CH 1H 101J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 180J T A C1608 CH 1H 120J T A C1608 JB 1H 102K T A C1608 CH 1H 220J T A C1608 CH 1H 050C T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A TESVSP 1C 474M 8R TEMSVA 1A 475M 8L TEMSVA 1A 335M 8L C1608 CH 1H 150J T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 JB 1H 102K T A C1608 CH 1H 120J T A C1608 CH 1H 090D T A C1608 CH 1H 080D T A C1608 CH 1H 680J T A C1608 JB 1H 102K T A TESVA 1C 105M1 8L C1608 JB 1C 104KT N C1608 JB 1C 104KT N C1608 CH 1H 180J T A C1608 CH 1H 050C T A C1608 CH 1H 010B T A C1608 CH 1H 101J T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 020C T A C1608 CH
19. The signals from the antenna switching circuit are applied to the limitter D50 and are then passed through the band pass filter D9 L16 C80 The filtered signals are amplified at the RF amplifier Q12 then applied to the 1st mixer cir cuit after out of band signals are suppressed at the band pass filter D11 D12 L19 C91 C97 D9 D11 D12 employ varactor diodes that track the band pass filters and are controlled by the T1 T3 signals from the D A convertor IC10 pins 2 3 10 These diodes tune the center frequency of an RF passband for wide bandwidth receiving and good image response rejection 4 1 3 1ST MIXER AND 1ST IF CIRCUITS The 1st mixer circuit converts the received signal to a fixed frequency of the 1st IF signal with a PLL output frequency By changing the PLL frequency only the desired frequency will pass through two crystal filters at the next stage of the 1st mixer The signals from the RF circuit are mixed at the 1st mixer Q13 with a 1st LO signal coming from the VCO circuit to produce a 21 70 MHz 1st IF signal 2ND IF AND DEMODULATOR CIRCUITS The 1st IF signal is applied to two crystal filters FI1 and FI3 to suppress out of band signals The filtered 1st IF signal is applied to the IF amplifier Q14 then applied to the 2nd mixer circuit IC1 pin 16 4 1 4 2ND IF AND DEMODULATOR CIRCUITS The 2nd mixer circuit converts the 1st IF signal to a 2nd IF signal A double conversion superhete
20. p 1M o o R169 R170 44V 1 2 3 T nessa SIBI lo Sa J Q17 01 z 1 104 Z R105 nie me 0 0027 nabr 0 01 2 8 8 39k 10k sss 9880 z gem ON dN Vici Sisisjejejej sla UN911F 2 3 3 9k 27k R94 IC3 NJM12902V 5 A OFF 0V C133 R108 lt iM zz IC4 BU4066BCFV MICOUT 0 1 T 150k CLIN Mm sp R332 Q56 DET E E 4 99V 47k SW5V aria UN9213 SW5V CTCSS D39 MA2S111 GPUs m CPU5 14 T DEV CTCC 1 VCC 4 99V Eco VOLIN VOLIN C377 c378_ R330 C376 gg C381 SQLIN SQLIN VON 22 ZE 04 I 10 pu 10 VOLOUT VOLOUT w p M t C123 8 Q43 A 4 92V R150 0 001 9 l me 470 i DTC144EU ci s cas Lassa R333 ae Took i s801 0 1 iM BY ENCODER i T R227 DICK QPVI p224 12k R359 UP k SCK 120k 1M EW DIUD SO B Cale Q38 1C11 ci DN 13 T 8 c216 601 DTC144EU S 80942ANMP DD6 8p 5 0 047 C244 l C236 i A El 77 0 001 R226 ISO 0 01 T 0 01 TX 4 67V RX 0V 9857 IC10 gu pD MINES 9 M62363FP 650C iy SCK AM l D45 i 1 MA2S111 USA only 1 l R5 Q53 WW T XP4601 4 4 SW5V C249 R320 R321 R336 N is 108 p 109 gt S110 p S111 p D46 Q54 Q22 Q21 Riba 0 01 15k 10k 100k ANV i PO D41 MA2S111 AM R232 I T MA2S111 USA only 2SA1576 2SA1576 2SA1576 tea i ik l Pt 68k 2 5 AW 5 4 4 4 4 8 1 mop S112 S113 S114 S115 PLCK Fa Fs 6 P1 D42 TX 4 21V TX 4 97V 100k I I I MASSI RX 4 99V RX 4 27V ANN AW C375 C161 c174 Le csr R323 raaa Z R325 2 4 4 4 4 0 001 47k 0 01 I 22 NET 10k 12k x 0022 00022 23 S116 p
21. so amp cise L poso 1009 T e T NJM12902V C75 R2512 R54 pies Bas 0 01 T Gaon T Sow 0 01 T 120 F 0 001 T 10k 017 330k 3 180k AW Wy TX 0V TX 1 97V C93 R65 79V R58 100k RX 1 76V a 0 001 100k T2 E T3 T3 Z n SW5V swsv VCC EXT SPEAKER Q15 2SB1132 AF ON 6 46V AF OFF 0V AFOUT 38 PS5 PS5 ve x R97 220k R115 120k R120 00 5 W 47k 13128 R98 330k C135 270p AM dd R44 C128 10k 1 90V C151 Ci52 67 AM ab Wai C149 IC5 TA7368F 47p 0 047 0 001 0 0017 47p D27 3 d 0 022 zz AN J E RB706F 40 I RI jek E 4 u prete as R112 a C145 C171 gr E 8 of 2 m a NJM12902V Masscool mag Q16 BIS di 01 f Q31 4 5 a 39k 0 0056 3 i 1k XP6501 DTC144TU 2 C399 x VOLOUT J 0 0033 t T CLOUT CLOUT Sb CLIN CLIN CLIN CCCo CCI TEC za E LEDC ON 3 18V CPUS 3 B Iu DS2 DS3 t CTCC I I LNJ310M6RA LNJ310M6RA VOC vcc 6 oe TEN LEDC WY S atis Bez 9183 DUD DUD z ol Islslalsisjejelzjsjelzie E R204 a TEMP a Balita Scr 3 TOS Z TUBS 3 Qas NTGCM20124AG473JCT TEMP al 8 MEZ EZ EAE EZ EZ EAE EZ EZ EIE Toor PEF un E lt DTC144EU S 2 8 s 3 amp S 5 8 8 B S 9 9 S S 5 8 R RI R L EXT MIG R181 C232 l n 10k Fo 2222222 2283333333338 107 J2 X2 CR 663 lt s 555 Y u u i t iB t uj uj gt OFT 9 200 MHz DICK 1 ammomamma D 5 Gu 000902040090 75 SEG12 BR24C16FV E2 MC X PBO ANO 2222222 AQBARSESSANZS P97 SEQ40 ag SEGI pm sawa Be age RSS Rag ert 2 7 po 3 sar P95 SEG38
22. 0 mA 10 C to 60 C 14 F to 140 F 54 W x 132 H x 35 D mm 2 V amp W x 5 3 46 H x 1 3 6 D in 350 g 12 3 oz 5 5 W 0 5 W High Low Variable reactance frequency modulation 5 0 kHz Less than 60 dB 3 conductor 2 5 d mm 1 40 2 2 kQ Double conversion superheterodvne svstem 1st 21 7 MHz 2nd 450 kHz 0 16 uV at 12 dB SINAD typical 0 1 uV at threshold typical 65 dB typical 75 dB typical 65 dB typical More than 300 mW at 10 distortion with an 8 O load 3 conductor 3 5 d mm 1 8 Q All stated specifications are subject to change without notice or obligation SECTION 2 INSIDE VIEWS TOP VIEW BOTTOM VIEW Antenna swtching circuit D2 D8 MA77 Power amplifier Q1 2SK3476 Antenna swtching circuit D1 MA77 RF amplifier Q12 3SK274 1st mixer Q13 3SK274 APC L Ween Q37 DTA144EU FM IF IC IC2 TA31136FN IF amplifier Fl1 FIS FL 298 Q14 2SC4406 21 700 MHz X1 CR 659 21 25 MHz PLL IC VCO circuit IC1 LV2105V TX RX switch D3 D4 MA77 a CPU IC8 HD6473877H SECTION 3 DISASSEMBLY INSTRUCTIONS 3 1 DISASSEMBLY INSTRUCTION REMOVING THE CHASSIS PANEL Unscrew 1 nut A and remove 1 knob 6 Unscrew 2 screws Take off the chassis in the direction of the arrow 4 Unplug J6 to separate front panel and chassis black 2 mm x 2 Chassis
23. 06970 4030007050 4030006860 4030006860 4030006870 4030007070 4030007040 4030007050 4030006860 4030006860 4030006860 4030011600 4030006860 4030006860 4030006860 4550005980 4030006850 4030006860 4030006860 4030006860 4030008920 4030006850 4030006860 4030006860 4030006860 4030006860 S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1C 104KT N C1608 CH 1H 221J T A C1608 CH 1H 271J T A C1608 JB 1H 562K T A C1608 JB 1C 333K T A C1608 JB 1H 102K T A C2012 JF 1C 105Z T A C1608 JB 1C 104KT N C1608 JB 1H 102K T A S ELECTROLYTIC ECEV1CA100SR S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC C1608 JB 1C 473K T A C1608 JB 1C 223K T A TEMSVA OJ 106M8L C1608 CH 1H 470J T A C1608 JB 1C 473K T A S ELECTROLYTIC EEVFC0J101P S TANTALUM S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC TEMSVA 1A 106M 8L C1608 JB 1E 103K T A C1608 JB 1E 103K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1C 104KT N S ELECTROLYTIC ECEV1CA101UP S ELECTROLYTIC ECEVOJA220SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMI
24. 1H 101J T A C1608 JB 1H 102K T A C1608 CH 1H OR5B T A C1608 JB 1H 102K T A C1608 CH 1H 101J T A C1608 CH 1H 050C T A C1608 CH 1H 050C T A C1608 JB 1H 102K T A C1608 CH 1H 390J T A C1608 CH 1H 560J T A C1608 CH 1H 560J T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 CH 1H 220J T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 CH 1H 050C T A C1608 JB 1E 103K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1C 333K T A C1608 JB 1E 103K T A C1608 CH 1H 820J T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C2012 JF 1C 105Z T A C1608 JB 1C 104KT N C1608 CH 1H 221J T A C1608 CH 1H 221J T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 JB 1H 222K T A C1608 JB 1H 272K T A C1608 JB 1C 104KT N TESVA 1C 155M1 8L C1608 JB 1E 103K T A C1608 JB 1H 562K T A 4030011600 4030007170 4030011280 4030008770 4030008900 4030006860 4030008680 4030011600 4030006860 4510004630 4030008920 4030008880 4550006050 4030007090 4030008920 4510006940 4550006250 4030006900 4030006900 4030006860 4030006860 4030006860 4030006860 4030007090 4030006860 4030006860 4030011600 4510006220 4510005430 4030006900 4030006990 4030007030 4030007100 4030011600 4030011600 4030006860 4030006860 4030011600 4030006900 4550002890 4030008900 4030008920 4030011600 4030006900 4030006900 4030008890 4030008630 4030006860 4030006860 4030006900 4030006860 4030006900 4030006900 4030006900 4030006860 4030006860 40300
25. 1H 102K T A S Surface mount MAIN UNIT ORDER NO DESCRIPTION 4030006860 4030006860 4030007060 4030009560 4030009500 4030009500 4030008900 4030009970 4030008880 4030009880 4030006870 4030006860 4030006860 4550006350 4030011600 4030006860 4510005430 4550006250 4030011600 4030007050 4030007090 4030007050 4030006860 4030007060 4030007050 4550006250 4550006760 4030011600 4030007040 4030007070 4030006950 4550005980 4030008650 4030006870 6450001680 6450001690 6510018430 6510021900 5030002000 5010000160 5010000160 7700002160 2230001070 2230001070 2230001070 7600000210 7030003860 7030003860 7030003860 7030003860 7030003860 7030003860 0910053802 8930051310 6910012350 6910012350 6910012350 S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 270J T A C1608 CH 1H R75B T A C1608 CH 1H 0R5B T A C1608 CH 1H 0R5B T A C1608 JB 1C 333K T A C1608 JB 1H 182K T A C1608 JB 1C 223K T A C1608 JB 1H 682K T A C1608 JB 1H 222K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A TEMSVB2 1A 226M 8L C1608 JB 1C 104KT N C1608 JB 1H 102K T A S ELECTROLYTIC ECEV0JA220SR S TANTALUM S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM S TANTALUM S CERAMIC S CERAMIC S CERAMIC
26. 2 TRANSMITTER CIRCUITS 4 2 1 MICROPHONE AMPLIFIER CIRCUIT The microphone amplifier circuit amplifies audio signals with 6 dB octave pre emphasis from the microphone to a level needed for the modulation circuit The AF signals from the microphone are applied to the microphone amplifier circuit IC3c pin 10 The amplified AF signals are passed through the low pass filter circuit IC3d pins 13 14 via the analog swtich IC4 pins 4 3 The fil tered AF signals are applied to the modulator circuit after passing through the analog swtich IC4 pins 8 9 4 2 2 MODULATION CIRCUIT The modulation circuit modulates the VCO oscillating signal RF signal using the microphone audio signals The audio signals SHIFT change the reactance of D37 to modulate an oscillated signal at the VCO Q50 D38 The oscillated signal is amplified at the LO Q6 and buffer Q4 amplifiers then applied to the TX RX switch circuit D3 D4 4 2 3 DRIVE POWER AMPLIFIER CIRCUITS The signal from the VCO circuit passes through the TX RX swtiching circuit D3 and is amplified at the pre drive Q3 drive Q2 and power Q1 amplifiers to obtain 5 5 W of RF power at 7 2 V DC typical The amplified signal passes through the low pass filter L4 C278 C287 and then applied to the antenna swtiching circuit D1 The signal is applied to the antenna connector J1 after being passed through the low pass filter L1 L2 C1 C5 The bias current of the drive Q2
27. 2 V 1 kQ 7030003670 S RESISTOR ERJSGEYJ 823 V 82 kQ S Surface mount MAIN UNIT ORDER NO DESCRIPTION MAIN UNIT ORDER NO DESCRIPTION 7030003400 7030003470 7030003400 7030003390 7030003460 7030003640 7030003480 7030003620 7030003610 7030003800 7030003820 7030003720 7030003740 7030003690 7030003590 7030003800 7030003200 7030003570 7030003680 7030003400 7030003700 7030003700 7030003800 7030003660 7030003590 7030003690 7030003460 7030003640 7030003440 7030003490 7030003540 7030003640 7030003260 7030003200 7030003680 7030003400 7030003400 7030003320 7030003320 7030003560 7030003520 7030003600 7030003760 7030003680 7030003400 7030003320 7030003680 7030003340 7030003600 7030003600 7030003480 7030003680 7030003630 7030003560 7030003580 7030003510 7030003440 7030003630 7030003940 7510001280 7030003560 7030003440 7030003640 7030003680 7030003650 7030003650 7030003650 7030003670 7030003500 7030003460 7030003510 7030003590 7030003690 7030003680 7410000950 7030003570 7030003580 7030003440 7030003840 7410000950 7410000950 S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESIS
28. 3 V 10 kQ ERJ3GEYJ 681 V 680 Q ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 221 V 220 Q ERJ3GEYJ 221 V 220 Q ERJ3GEYJ 101 V 100 Q ERJ3GEYJ 331 V 330 Q ERJ3GEYJ 391 V 390 Q ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 822 V 8 2 kQ ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 102 V 1 kQ ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 822 V 8 2 kQ ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 683 V 68 kQ ERJ3GEYJ 683 V 68 kQ 100 kQ ERJ3GEYJ 153 V 15 kQ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 122 V 1 2 kQ ERJ3GEYJ 683 V 68 kQ ERJ3GEYJ 683 V 68 kQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 105 V 1 MQ ERJ3GEYJ 105 V 1 MQ ERJ3GEYJ 105 V 1 MQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 185 V 1 8 MQ ERJ3GEYJ 223 V 22 kQ ERJ3GEYJ 333 V 33 kQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 102 V 1 kQ ERJ3GEYJ 104 V 100 kQ USA only ERJ3GEYJ 105 V 1 MQ ERJ3GEYJ 820 V 82 Q ERJ3GEYJ 274 V 270 kQ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 222 V 2 2 kQ ERJ3GEYJ 224 V 220 kQ ERJ3GEYJ 101 V 100 2 ERJ3GEYJ 333 V 33 kQ ERJ3GEYJ 333 V 33 kQ ERJ3GEYJ 105 V 1 MQ ERJ3GEYJ 272 V 2 7 kQ ERJ3GEYJ 105 V 1 MQ ERJ3GEYJ 103 V 10 kQ C1608 CH 1H 120J T A C1608 CH 1H 2R5B T A C1608 CH 1H 270J T A C1608 CH 1H 060D T A C1608 CH 1H 220J T A C1608 J
29. 5 LNJ310M6RA LNJ310M6RA I we te UN9213 l CPUS t Se I veo er im Q25 R144 0163 MA25111 T cpus VCC TONE LEDC MA8056M 22k 001 t H t x DEV TONE M 2SC4116 4 99V CTCN DUD DIUD z A SIN S S S S 2 2 312 nea a ric 33k R205 L R155 l N VOLOUT REMO S Je 9 9922882998 TAP Tek gt 100 pe 3 E Sar care D 6816 zz C381 SOLIN VOLGUT R103 Rise TEMP al 5 5 Jl mlolo al ajala alaa 0 01 TIU 1 T t NW I gies 9 Q43 ca SAO 8 2 8 5 8 8 s 8 8 58 8 8 5 el 2 3 2 9 s e e e e ra d 7 KEAN o oat lt DTC144EU Sp R181 9 2 Z 2 9 ndgoz9599399z aro OPT Til T 1 i err L ae L 100k 3 lt lt lt BEESUPDODEDED wwv wc YX C385 R334 e 0 1 100k i X2 CR 663 93353 So 9 9 55508 cao 25 SEG12 T ak R333 T2 9 200 MHz DICK 1 Donna COJONES P97 SI 74 SEG11 0 1 1M 1M 5 PB0 AN0 aa a a a uuu ocgaGad aanoono S801 R227 I R102 AVSS Oo SRREREoaE 73 SEG10 C165 C166 EPS ENCODER OPV1 t R224 12k Z Re 10 Bus 72 SEG9 0 001 0 001 FP 120k 1M N W ooo 71 S UP f Ses o t ra lt xs lt aa a zsT Tq Q38 IC11 C193 R101 ag C194 L4 E zo SEG7 p E L 2 czl9 DTC144EU S 80942ANMP DD6 8 wW 15p 7 65 SEG5 F 0216 0 01 pz XIN OSC1 i pj e lt E E Es T RESET RES b 10 uii 65 SEG2 TXO C244 L C236 lt tj 31 MM una SEGI CSHIFT 0 IRQA ADTRG z a TX 4 67V RX 0V 991 9 91 IC10 a SCK 12 52 s 1C8 63 PSSCO SEG1 4 67 Lo gt sok i im Poi HD6433876B49H 6 gt BSYCO OS SEG 9 M62363FP 650
30. 50 2251 jack panel 8610011080 Knob N 287 8930055520 2251 10key 8930050840 2251 minus terminal 8930050850 2251 plus terminal 8930042350 1922 mic sheet 8930051300 2251 mic sponge 8930051290 2251 opt sheet 8830001340 1903 hex nut 8930050900 2251 window sheet 8930036751 Spring 8830001250 Ant connector 101 8810009510 Screw BT M2 x 4 NI ZU 8810009560 Screw BT M2 x 6 ZK 8810000100 Screw M2 x 4 ZK 8930050800 2251 jack cap 8860001210 2251 ANT rug 8510013570 2422 shield plate 8930042040 1922 Belt clip 8930051290 2251 OPT sheet e Dm ak l EN wak n ln ln Qh cl l l l l l l c l l l l2 2510001120 Speaker SDRS 3650P 008 MAIN UNIT ODER NO DESCRIPTION 8930051310 LCD TTR 5515 8930051310 LCD contact SRCN 2251 SP N W 8510011111 1922 VCO case 1 8510011101 1922 VCO cover 1 8930050811 2251 LCD holder 1 8210016580 2251 reflector 8410002410 2468 PA heatsink Screw abbreviations BT Self tapping NI ZU Nickel Zinc ZK Black MP3 C SP1 C MP27 C EA MAIN unit 1 AX MP31 C MP37 C o MP10 C AQ Wh MP1 C o o A L Ge s o e n Up CODO A MP24 C ELLIO KR Q C CHASSIS PARTS M MAIN UNIT UNIT abbreviation 7 2 SECTION 8 SEMI CONDUCTOR INFORMATION 8 1 TRANSIS
31. 5U e ar A R305 E g L c289 L i c21 AMT 100 R23 mz TX 4 06V L6 0 o T 0 T L5 0 001 1 47 C288 C204 L L24 2 46V 680 330 2 37V R15 R13 RX 0V 27nH 21nH Fir 0 001 0 001 27H R304 AS 100 33 E L32 L4 KA KA Di C8 Le Li 220 nmm _ Mr s TA 50nH MA77 0 001 50 60nH C956 0 001 l L c15 4 U L L Mm Mm Il 4 000 B C33 150p pa i G205 C225 R309 8 2k a L R12 L7 m 2 2k 0 001 C4 6p ap 0 001 C22 i Q1 m m J 0001 ax sn A i TX 3 62V 100p wit 2SK3476 risas 5 4 H i Ci RI 1 83V HS cer I O Q2 C284 C285 C287 C278 U y RB706F 40 22p 12p 82k SN 2SK3475 b S p T 18p S E cm T T R22 R307 TX 0 82V pS ab L A 68k Z 390 RX 0V EYT R308 TX 4 30V cia RX OV R161 C368 RX OV d 0 5p us ces Rio Pas oooi ni i y C31 0 001 33 33k T S p TX 1 49V L Mv msasv RX 0V TX 1 82V gum on Quay Q6 25C4406 Q3 RX OV T5 18 RX OV 2SC5085 a 2SC4406 PS5 PS5 TX 0V IC3 w7 RX 4 55V NJM12902V R69 CHASSIS UNIT C102 L21 100 56p 47nH C179 1 1 1 I Lo T L SP1 4 C99 C90 TX 0 833V Q37 L18 L29 C101 C100 0 001 0 001 C94 68nH L15 J6 68nH 3 T amp T e sl L on D gano DTA144EU f T i 3SK274 FI in I Ree L cr AW T cu L a Df C89 100k 01 T R53 10k C243 0 001 HVU350B 0 001 HVU350B 2 UL i I 1 gt D50 D8 D2 C52 C76 W 20 I I L16 c97 L C96 R64 cop L cor R57 Cei ceo L LIS MA728 MA77 MA77 15p IC 1 1 L36 R70 n 3 C105 L C104 22H P 100k spp MB TANG 100k 1009 T 2p JT ces L cer L
32. 7 8TL 60N LQN21A 68NJ04 LQN 1A 56NJ04 NL 252018T 2R2J ELJRE 47NG F NL 322522T 2R7J 3 EXCCL3225U1 ELJRE 68NG F 0 30 0 9 6TR 17 5N LB 277 NL 252018T 2R7J MLF1608A 2R2K T re ee ee eee eae yu d lt E DEO ps Ee HVU350B TRF 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kQ RB706F 40T106 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kQ RB706F 40T106 7030003640 S RESISTOR ERJ3GEYJ 473 V 47 kQ RB706F 40T106 7030003760 S RESISTOR ERJ3GEYJ 474 V 470 kQ MA8056 M TX 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kQ MA2S077 TX 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kQ HVU350B TRF 7030003710 S RESISTOR ERJ3GEYJ 184 V 180 kQ MA2S111 TX 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kQ MA2S111 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kQ 7030003330 S RESISTOR ERJ3GEYJ 121 V 120 Q 7030003280 S RESISTOR ERJ3GEYJ 470 V 47 2 7030003680 S RESISTOR ERJSGEYJ 104 V 100 kQ 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kQ USA only 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kQ USA only 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kQ USA only 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 kQ 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 2 7030003680 S RESISTOR ERJSGEYJ 104 V 100 kQ 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kQ FL 298 21 700 MHz 7030003360 S RESISTOR ERJ3GEYJ 221 V 220 Q SFPC450E TC01 7030003320 S RESISTOR ERJSGEYJ 101 V 100 Q FL 298 21 700 MHz 7030003440 S RESISTOR ERJ3GEYJ 10
33. 70 S DIODE 1790001670 S DIODE 1790001670 S DIODE 1790000950 S ZENER 1790001260 S DIODE 1720000780 S VARICAP 1790001250 S DIODE 1790001250 S DIODE 1790001250 S DIODE 1790001250 S DIODE 1790001250 S DIODE 1790001250 S DIODE 1790001250 S DIODE 1790001250 S DIODE 1790001250 S DIODE 1790000660 S DIODE 2010002330 MONOLITH 2020001490 S CERAMIC 2010002330 MONOLITH LV2105V TLM 6050010800 S XTAL CR 659 21 25 MHz TA31136FN D EL 6050010870 S XTAL CR 663 9 200 MHz NJM12902V TE 1 6070000210 S DISCRIMINATOR CDBCA450CX24 BU4066BCFV E1 TA7368F TP1 BR24C16FV E2 6200008260 S CO HD6433876B49H 6200008280 S CO M62363FP 650C 6200008280 S CO S 80942ANMP DD6 T2 6200008250 S CO S 81350HG KD T1 6200007710 S CO 6200005260 S CO 6200006980 S CO 2SK3476 TE12L 6200007000 S CO 2SK3475 TE12L 6200008170 S CO 2SC5085 Y TE85R 6200008260 S CO 2SC4406 4 TL 6200008090 S CO 2SC4406 4 TL 6200002380 S CO 2SC4406 4 TL 6200003280 S CO XP4601 TX 6200005740 S CO 3SK274 TE85R 6200003090 S CO 3SK274 TE85R 6200003590 S CO 2SC4406 4 TL 6200006670 S CO 2SB1132 T100 Q 6200008700 S CO XP6501 TX AB 6130002480 S CO UN911F TX 6200003710 S CO 2SA1576A T106R 6200004920 S CO 2SA1576A T106R 2SC4116 GR TE85R DTC144TU T107 7030003670 S RESISTOR ERJ3GEYJ 823 V 82 kQ 2SK1069 4 TL 7030003480 S RESISTOR ERJ3GEYJ 222 V 2 2 kQ DTA144EUA T106 7030003480 S RES
34. 80 7030003440 7030003680 7030003800 7030003310 7030003730 7030003560 7030003480 7030003720 7030003320 7030003620 7030003620 7030003800 7030003490 7030003800 7030003560 4030007020 4030009550 4030007060 4030006970 4030007050 4030006860 4030006860 S ARRAY S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC EXB V8V 102JV ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 681 V 680 Q ERJ3GEYJ 683 V 68 kQ ERJ3GEYJ 153 V 15 kQ ERJ3GEYJ 10
35. B 1H 102K T A C1608 JB 1H 102K T A S Surface mount MAIN UNIT ORDER NO DESCRIPTION MAIN UNIT ORDER NO DESCRIPTION 4030006860 4030006900 4030007150 4030006860 4030006860 4030006900 4030006860 4550006480 4030007130 4030006860 4030006860 4030006860 4030006860 4030007040 4030007020 4030006860 4030007050 4030006960 4030006860 4030006860 4550006260 4550005980 4550003080 4030007030 4030006860 4030006900 4030006860 4030007020 4030007000 4030006990 4030007110 4030006860 4550000460 4030011600 4030011600 4030007040 4030006960 4030009510 4030007130 4030006860 4030006900 4030006860 4030006860 4030006860 4030006930 4030007130 4030006860 4030009500 4030006860 4030007130 4030006960 4030006960 4030006860 4030007080 4030007100 4030007100 4030006860 4030006900 4030007050 4030006860 4030006900 4030006960 4030006900 4030006860 4030006860 4030008900 4030006900 4030007120 4030006860 4030006900 4030008680 4030011600 4030007170 4030007170 4030006860 4030006900 4030006870 4030008470 4030011600 4550002960 4030006900 4030008770 S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S TANTAL S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S TANTAL S TANTAL S TANTAL S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM S TANTAL S CERAM S CERAM S CERAM S CERAM S CERAM S CERAM
36. C S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1E 103K T A C1608 CH 1H 080D T A C1608 CH 1H 150J T A C1608 CH 1H 560J T A C1608 JB 1C 104KT N C1608 JB 1C 104KT N C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1C 104KT N C1608 JB 1E 103K T A TESVA 1A 225M1 8L C1608 JB 1C 333K T A C1608 JB 1C 473K T A C1608 JB 1C 104KT N C1608 JB 1E 103K T A C1608 JB 1E 103K T A C1608 JB 1C 273K T A C1608 JF 1C 104Z T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 JB 1H 102K T A C1608 JB 1E 103K T A C1608 JB 1E 103K T A C1608 JB 1E 103K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 060D T A C1608 CH 1H 220J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 222K T A C1608 CH 1H 330J T A C1608 CH 1H 180J T A C1608 CH 1H 220J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1C 104KT N C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A TEMSVA 1A 475M 8L C1608 JB 1H 471K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1C 473K T A C1608 JB 1H 471K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB
37. C 14 li S LL PIST SEG a so 15 oca 60 OPVI SEGA fon DAO Sin USA only Q53 CLOUT 17 pze TxD 58 ESCK SEG6 vE B5 t CCS 18 p27 1RQ0 57 AFON SEG7 l T5 fi XP4601 NOIS 19 P17 RQ3 TMIF 56 SEG8 C249 R320 R321 R336 NOIS CIRQ 20 ROD 55 SEG9 SW5V TX OV p Doe tok maap MW 51 819802 54 t SEGIO 1 S110 Siti D46 Q22 Q21 RX 4 88V R326 gt R232 55 P15 RGT 58838858 d SEGI S108 109 P oH Moser RI 7 68k tk S2 55 Pia a f E Eo MA2S111 USA only g 2SA1576 2SA1576 2SA1576 Caco L mat z OPTI 34 P13 TMIG 22990888 x 52 C206 SEG12 l l 1 0 033 68k e 25 B12 TMOFH i23zg8t 8gz068Ez8o6oo5oG P67 SEG16 51 R246 R245 0 001 R17 pst gt i ANN 5 OPT3 P11 TMOFL FERA AAA EE NABA lE us R236 n C297 SEG14 m o PLCK SS888z2z2z22220000000 R gssai SEG15 TTR5515 UPFDHW 1 paas Tok d R318 jie FLOK g 2222358338358588388 E SEES S112 S113 S114 p S115 p ayak TX 4 21V TX 4 97V 68k R241 1M 350 E49 00k gen e i e e ae e e e e e n e e n AN MMUT SEG17 ki 5 uh MA2 RX 4 99V pcan WH 1M USA only ers sz ANN RMUT SEG18 Mees C373 C370 z s s s g e s Sl g g S s S a EE EEE s TETE AW SEG19 J l l P C375 R329 L C398 Ci62 R141 C161 L R139 C174 8 0 0018 C372 care 212 CPUS S S S R S e TAW T mm SEGOD 0 001 47k 4 7 0 01 i 4 7k 0 01 10k 22 BJ A 0 022 0 00 cla L 4 eer GUNT SEG 1 1 1 Y SEG22 D48 R239 R242 1M AWW d w olz S116 S117 S118 s119 MA2S111 1k 35V g 2 1 MN 4 43 Y z o s ea ol al al ed al a 2101213
38. D A A Buffer i to transmitter circuit convertor IC10 pin22 i to 1st mixer circuit when transmitting Q5 D4 Loop Buffer filter 9 Phase Programmable Prescaler Rl detector counter 21 25 MHz signal a OR o the FM IF IC 16 Programmable Shift register I3 so divider 41 pisT 1 MIEN IC1 LV2105V X1 21 25 MHz 4 6 PORT ALLOCATIONS 4 6 1 CPU IC8 Pin number Description Input port for the clock signal from the DIAL S801 Input port for reset signal Pin number Description Outputs control signal for the regulator circuit of AF power amplifier High When squelch is open etc Outputs reference oscillator for the CPU control signal Outputs LCD backlight control signal High Lights ON Outputs serial clock signal to the PLL IC IC1 pin 2 D A convertor IC IC10 pin 7 and optional unit Outputs EEPROM IC7 pin 6 clock signal Outputs serial signals to the PLL IC IC1 pin 3 D A convertor IC IC10 pin 8 and optional unit I O port for the data signals from to the EEPROM IC7 pin 5 I O port for strobe signals from to the D A convertor IC IC10 pin 6 Input port for the cloning signal Outputs the cloning signal Outputs strobe signals to the PLL IC IC1 pin 4 Input port for noise signals pulse type Input port for the power switch Low While POWER switch is pushed Outputs VCO5 re
39. ISTOR ERJ3GEYJ 222 V 2 2 kQ DTC144EUA T106 7030003240 S RESISTOR ERJ3GEYJ 220 V 22 Q DTC144EUA T106 7030003360 S RESISTOR ERJ3GEYJ 221 V 220 Q UMX5 TL 7030003260 S RESISTOR ERJ3GEYJ 330 V 33 Q DTC144EUA T106 7030003500 S RESISTOR ERJ3GEYJ 332 V 3 3 kQ XP4601 TX 7030003500 S RESISTOR ERJ3GEYJ 332 V 3 3 kQ 2SA1576A T106R 7030003260 S RESISTOR ERJ3GEYJ 330 V 33 Q 2SB1132 T100 Q 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 kQ UN9213 TX 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 Q XP1501 TX AB 7030003220 S RESISTOR ERJ3GEYJ 150 V 15 Q XP4601 TX 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 kQ 2SC4116 GR TE85R 7030003630 S RESISTOR ERJ3GEYJ 393 V 39 kQ 7030003380 S RESISTOR ERJ3GEYJ 331 V 330 Q 7030003710 S RESISTOR ERJ3GEYJ 184 V 180 kQ 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 kQ 7030003660 S RESISTOR ERJ3GEYJ 683 V 68 kQ 7030003420 S RESISTOR ERJ3GEYJ 681 V 680 Q MA77 TX 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 kQ HVC376BTRF 7030003390 S RESISTOR ERJ3GEYJ 391 V 390 Q MA77 TX 7030003380 S RESISTOR ERJ3GEYJ 331 V 330 Q HVU350B TRF 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 Q HVU350B TRF 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 Q 0 30 1 7 8TL 60N 0 30 1 7 7TL 50N 0 30 1 7 7TL 50N 0 30 0 9 7TL 21N LQN21A 27NJ04 LL1608 F68NK ELJRE R10G F ELJRE 82NG F 0 35 1 6 8TL 54N 0 30 1
40. LIST 10 2 DISASSEMBLY INFORMATION CHARGE UNIT ODER NO DESCRIPTION 7010007550 RESISTOR ERG3SJ680H 7010007100 RESISTOR PSD1 4V 1 kQ 6510021470 CONNECTOR HEC0470 01 230 5040001390 LED TLG124A 0910053820 PCB B 5650 8930051340 2338 TERMINAL 8930051340 2338 TERMINAL CHASSIS UNIT ODER NO DESCRIPTION 8010018620 2447 case A 8110007450 2447 cover MP2 B 8930039620 Leg cushion A 8930055020 2480 spacer 8930055030 2480 BC spacer 8810008660 Screw BO M 3 x 8 NI ZU BT Screw abbreviations BO BT Self tapping NI ZU Nickel Zinc CHARGE unit MP2 I MP3 MP3 RR MP3 NOTE CHASSIS UNIT B CHARGE UNIT 10 1 10 3 VOLTAGE DIAGRAM L 13 8V C 7 2V N 13 8V N 13 8V A R168 MP1 O J1 R2 DS1 HEC0470 01 230 1k TLG124A C 9 2V N 13 8V MP2 O 10 4 BOARD LAYOUT SECTION11 BLOCK DIAGRAM X1 CR 659 21 250 MHz Q51 DTC144EU lli R5 D37 MA2S077 VCO Q59 2SC4116 SHIFT REF OSC D1 MA77 D2 MA77 D38 HVU350B D3 MA77 Q50 UMX5 Q6 2SC4406 Q4 2SC4406 D4 MA77 Q3 2SC5085 Q2 2SK3475 Q1 2SK3476 D8 MA77 OPTIONAL mic ar PTT UNIT FRQCON Dy TX RX p ANT sw HVC376B IC1 LV2105V SW DTC gt REF ADJ RB706F RB706F PS5 S801 Q5 2504406 gt Q37 DTA144EU 21 250
41. O A ICOM SERVICE MANUAL VHF TRANSCEIVER IC V8 Icom Inc INTRODUCTION This service manual describes the latest service information for the IC V8 at the time of publication To upgrade quality all electrical or mechanical parts and internal circuits are subject to change without notice or oblig ation DANGER NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 10 3 V Such a connection could cause a fire hazard and or electric shock DO NOT expose the transceiver to rain snow or any liquids DO NOT reverse the polarities of the power supply when con necting the transceiver DO NOT apply an RF signal of more than 20 dBm 100mW to the antenna connector This could damage the transceiv er s front end ORDERING PARTS Be sure to include the following four points when ordering replacement parts 1 10 digit order numbers 2 Component part number and name 3 Equipment model name and unit name 4 Quantity required lt SAMPLE ORDER gt 0910053802 PCB B 5649B IC V8 MAIN UNIT 1 pieces 8810009560 Screw BT M2 x 6 ZK IC V8 Chassis 10 pieces 8810009510 Screw BT 2 x 4 NI IC V8 Chassis 10 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES Make sure a problem is internal before disassembling the transceiver DO NOT open the transceiver until the transceiver is disconnected from its power source DO NOT force any of
42. RJ3GEYJ 332 V ERJ3GEYJ 152 V ERJ3GEYJ 392 V ERJ3GEYJ 124 V ERJ3GEYJ 104 V EXB V8V 102JV ERJ3GEYJ 153 V ERJ3GEYJ 102 V ERJ3GEYJ 225 V EXB V8V 102JV EXB V8V 102JV ERJ3GEYJ 224 V ERJ3GEYJ 471 V ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 392 V 3 9 kQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 183 V ERJ3GEYJ 123 V 470 Q 1 8 kQ 470 Q ERJ3GEYJ 391 V 390 Q 1 5 kQ 47 kQ 2 2 kQ ERJ3GEYJ 333 V 33 kQ 27 kQ 1 MQ 1 5 MQ ERJ3GEYJ 105 V 1 MQ 10 Q 12 kQ 100 kQ ERJ3GEYJ 471 V 470 Q ERJ3GEYJ 683 V 68 kQ 18 kQ 120 kQ 1 5 kQ ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 473 V 47 kQ 33 Q 10 Q ERJ3GEYJ 103 V 10 kQ 4 7 kQ 22 kQ 470 kQ ERJ3GEYJ 104 V 100 kQ 470 Q 100 Q 100 kQ ERJ3GEYJ 151 V 150 Q 100 kQ 7410000950 7030003440 7030003440 7030003800 7030003800 7030003800 7030003680 7030003680 7030003680 7030003740 7030003560 7030004050 7030003560 7030003560 7030003640 7030003420 7030003660 7030003580 7030003560 7030003420 7030003560 7030003360 7030003360 7030003320 7030003380 7030003390 7030003640 7030003550 7030003640 7030003640 7030003440 7030003520 7030003550 7030003520 7030003660 7030003660 7030003580 7030003560 7030003560 7030003450 7030003660 7030003660 7030003680 7030003680 7030003640 7030003560 7030003560 7030003520 7030003800 7030003800 7030003800 7030003680 7030003830 7030003600 7030003620 70300036
43. SEG23 7 8 3 Fe MA2 X E E 5 3 5 9 31 Bl 3 5 3 g E z 2 5 2 2 8 S SEG24 ii PESA w Peon R243 1M R194 FF d o 2 S L LI e et a afa COMI 1 i i gt t 56k R195 56k COM2 R238 1k t w ANY COM t 1 1 1 A al lele R193 R196 COMA 120 S121 122 p S128 PE ix D KE m Bla alata 56k 82k q m 5 ta KA MA2S111 KSO S1 S2 a a 8 Sho Co Ko Ko 1 i l gt KR3 R240 KAT ik MAIN UNIT DC POWER SUPPLY 7 2 V H a p MEASURMENT TESTER INNER RESISTANCE MORE THAN 50 k o V 12 1 Icom Inc 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan Phone 06 6793 5302 Fax 06 6793 0013 URL http www icom co jp world index html Icom America Inc Corporate Headquarters 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 425 454 8155 Fax 425 454 1509 URL http www icomamerica com lt Customer Service gt Phone 425 454 7619 Icom Canada Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 604 952 4266 Fax 604 952 0090 URL http www icomcanada com Icom Australia Pty Ltd A B N 88 006 092 575 290 294 Albert Street Brunswick Victoria 3056 Australia Phone 03 9387 0666 Fax 03 9387 0022 URL http www icom net au Icom New Zealand 146A Harris Road East Tamaki Auckland New Zealand Phone 09 274 4062 Fax 09 274 4708 URL http www icom co nz Icom Europe GmbH Communication Equipment Himmelgeister St
44. T 2SK1069 PS5 PS5 p ps T T 5 TX 0V EP3 EP4 R81 cit d MICIN MICIN MMZ1608Y102BT MMZ1608Y102BT R300 10k C290 0 001 470 i 001 T qu RX 4 55V LVIN 4 gt 1 0 w I 390 C388 C387 C386 L R301 m C102 L21 MICOUT MICOUT I C283 lt R186 22p 47p BJ 22p 680 R80 z l L20 56p 47nH 5V SV 0 001 47k a 82k ctos L cto7 c106 L 22H 9 ri mm PTTOUT T PTTOUT z E 1 T T T ns TWIL CERT bi 1 I Sal ol C3890 001 R85 C117 R244 xa ca zm cs P TOV L29 C101 C100 F GND 2lz 9 bake 1 5k 1 0 001 100k CDBCA450CX24 hi e id RX 0 74V Ei Bussa l ide 68nH 56p i 39p T i PTTIN 1 FL A PTTIN FI2 SFPC450E Z jest _ 21 700 MHz 21 700 MHz P C223 og i ciel W y a L gt Q13 aoi R79 DES TX OV 3SK274 J R68 2 1k karana LE RX 0 74V Peg 220p Q14 C110 w 2SC44 5 R72 L36 R70 R86 8 ww SC4406 P R75 C104 10k Z 22H p 100k 47k cui Gus R83 oi e 220 0 01 J 0 00 T e 72 470 ae R87 C122 c120 L cuis L ons IC2 TA31136FN caos 0 033 0 001 0 001 0 001 VCC VCC 2 2k 220p 0 1 0 01 1 BATT lt s 4 LN LW T AL ioe a mee k cao c283_ caos c173 SW5V 0 0022 0 0022 470p L 100 IC12 SW5V sws VCC ND Z J Z S 81350HG KD t DISCIN l PS5 PS5 6 60V DET 3 E 3 IC3 R177 C21 o E R44 5 e E Mu Le NJM12902V ik ROE Tan 7 qies fox a 2SB1132 al pe C132 C125 0 1 a 470 10 0 0056 10 ST L Goa T 9 0022 Wee tf L XP1501 s T O lt 4 m m 8 93 M 6 I cz 2 cur L R130 C20 R266 8 rama L C126 5 L oz Z812 B u 0 047 100k
45. TOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR ERJ3GEYJ 471 V ERJ3GEYJ 182 V ERJ3GEYJ 471 V ERJ3GEYJ 152 V ERJ3GEYJ 473 V ERJ3GEYJ 222 V ERJ3GEYJ 273 V ERJ3GEYJ 105 V ERJ3GEYJ 155 V ERJ3GEYJ 334 V ERJ3GEYJ 124 V ERJ3GEYJ 183 V ERJ3GEYJ 100 V ERJ3GEYJ 123 V ERJ3GEYJ 104 V ERJ3GEYJ 154 V ERJ3GEYJ 154 V ERJ3GEYJ 105 V ERJ3GEYJ 183 V ERJ3GEYJ 124 V ERJ3GEYJ 152 V ERJ3GEYJ 102 V ERJ3GEYJ 272 V ERJ3GEYJ 682 V ERJ3GEYJ 330 V ERJ3GEYJ 100 V ERJ3GEYJ 104 V ERJ3GEYJ 471 V ERJ3GEYJ 101 V ERJ3GEYJ 101 V ERJ3GEYJ 472 V ERJ3GEYJ 223 V ERJ3GEYJ 474 V ERJ3GEYJ 471 V ERJ3GEYJ 101 V ERJ3GEYJ 104 V ERJ3GEYJ 223 V ERJ3GEYJ 223 V ERJ3GEYJ 222 V ERJ3GEYJ 393 V ERJ3GEYJ 103 V ERJ3GEYJ 153 V ERJ3GEYJ 102 V S RESISTOR ERJ3GEYJ 393 V S RESISTOR ERJ3GEYF 104 V S THERMISTOR NTCCM20124AG4 S RESISTOR ERJ3GEYJ 103 V S RESISTOR ERJ3GEYJ 102 V S RESISTOR ERJ3GEYJ 473 V S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S ARRAY S RESISTOR S RESISTOR S RESISTOR S RESISTOR S ARRAY S ARRAY ERJ3GEYJ 563 V ERJ3GEYJ 563 V ERJ3GEYJ 563 V ERJ3GEYJ 823 V E
46. TORS AND FETS SYMBOL INSIDE VIEW SYMBOL INSIDE VIEW 2SA1576 R DTA144EU UN911F 2SB1132 Q DTC144EU UN9213 2SC4116 GR 2SC4406 4 2SC5085 Y DTC144TU 2SK1069 4 2SK3475 XP1501 AB 2SK3476 XP4601 3SK274 XP6501 AB 4 6 C2 B1 C1 8 2 DIODES SYMBOL INSIDE VIEW HVC376B HVU350B MA2S077 MA2S111 MA728 MA8056 M RB706F SECTION9 BOARD LAYOUTS 9 1 MAIN UNIT TOP VIEW The combination of this page and the next page shows the unit layout in the same configuration as the actual
47. V ES 233V Q51 ari R309 82k c33 L 000175 AM Qoi 33K 5 HA C22 2SK3476 pee r a c5 C3 ci L m So Ro cm Wi R41 i C30 DTC144EU R313 R303 SAL 1 TX 3 62V p b 100p mE A X D era 22p 27p 12p 82k OPV3 OPV3 470k 0 001 T C396 J 100 ee gs2 22p 1k 220 BSB c RX 3 82V ase n Q2 a Cesa L C285 LF F 6287 T re ES ER HB L i CIR 33p p p C367 1 83V 1H R16 p 18p l cna 2 C60 gt M R302 0 5p 39k 0 18p x 15 9 001 TON 2SK3475 22 J L A PLCK 10k 0 74V j 4 R7 L ccs SO TX OV RX 4 53V 2SC4406 R264 R22 amp R307 1 w RX 0V 220 TX 2 20V C251 L R162 R161 L C252 CCS 68k y D 3 OPTS PLST Z 68k L33 T 390 R308 D4 MA77 TX 4 30V S NES ci3 L R341 R340 RX 0V 0 001 L 22k 22k 0 001 SET FIGA R35 w T T LB 277 R315 77 cas 47k F MA77 RX 0V nas 00017 33 zx Z 4 REM 100k C295 c360 L D37 Bal c28 c23 mo pgs OPT2 AW 100 2 0 001 0 001 T MA28077 0 5p 12p 0 001 33 OPT2 C55 ANAA R352 R361 R351 C39 UN f cai L TX 1 49V L AMY TX 3 65V 0 001 AFOUT we 0 01 5 270k 1M 82 10 i 5p Q4 RX OV e dico L cis RX OV OPT1 orm T 654 E n R32 R314 6359 A 2SC4406 Q3 aa d Ed 9001 R185 1k C293 IC1 LV2105V 0 001 mig P33 6 5 4 390 qal 0 73V Q6 2SC5085 DISCIN dea t AN 1 WI i 2 Q58 Aw Ux mI 2SC4406 sico L a L34 D38 cas O w 1 XP4601 Sa YH coe T HVU350B A 0 001 gt i MM p Q34 ee 100 F DET 2SK1069 1 AN FE Ps5 SS pss w9 IC3 T PSS NJM12902V NIT CP1 T TX OV CHASSIS U t BS EP3 EP4 R81 z Ci
48. gnal Low While transmitting Outputs APC circuit Q37 IC3 control signal High While transmitting Input port for the transceiver s internal tempareture detection 4 6 2 D A CONVERTOR C IC10 Pin m number Description Output tunable bandpass filter control signals Outputs tunable bandpass filter con trol signal while receiving Outputs TX power control signal while transmitting T3 VOLOUT Outputs AF volume control signal Outputs DTCS s gradient control sig DTC nal Outputs reference frequency control FC signal to X1 Outputs transmit devetion control sig nal Outputs squelch control signal SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION H REQUIRED TEST EQUIPMENT EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Output voltage 7 2 V DC Current capacity 5A or more DC power supply Digital multimeter Input impedance 10 MQ V DC or better DC POWER CABLE CONNECTION DC POWER S SUPPLY S SP 3 q H Soldering DC cable here Top view 5 2 PLL ADJUSTMENT MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS LOCATION UNIT ADJUST Operating frequency MAIN Connect a digital multi 145 000 MHz meter to check point LV Receiving
49. gulator Q11 control signal Low While power is ON l O ports for optional unit detection signals from to J5 Outputs PS5 regulator Q54 control signal Low While power is ON Outputs LCD contrast control signal Output LCD driver signals Input port for the bias signals for the LCD Outputs CTCSS and DTCS tone sig nal Outputs LCD common signals Outputs DTMF BEEP and 1750 Hz tone signal Input port for initial matrix Low While keys are pushing Input port for CTCSS and DTCS decoded signals Input port for PLL unlock signal from the PLL IC IC1 pin 14 Low During lock Input port for the PTT switch High While PTT switch is pushed Outputs RX mute control signal Input port for the RX mute signal from the optional unit Input port for the UP DOWN signal from the DIAL S801 Outputs TX mute control signal Input port for the TX mute signal from the optional unit Input port for the remote signals from an optional microphone HM 75A via the MIC jack Input port for the RSSI detection Input port for the PLL lock voltage Outputs low pass filter cut off frequen cy control signal when DTCS is acti vated Outputs SW5 regulator Q55 Q57 Q39 control signal Low While power is ON Outputs R5 regulator Q21 control signal Low While receiving Outputs T5 regulator Q22 control si
50. he attached battery pack Common 5 V converted from the VCC line by the CPU5 regulator IC12 The output voltage is applied to the CPU IC8 EEPROM IC7 and reset IC IC11 Common 5 V converted from the VCC line by the SW5 regulator circuit Q55 Q57 D39 The out put voltage is applied to the T5 R5 PS5 and VCO5 regulator circuits D A convertor IC10 pin 16 etc Common 5 V converted from the SW5V line by the VCO5 regulator circuit Q11 using the LO Q6 and buffer Q4 Q5 amplifiers The VCO5 regulator circuit is controlled by the PSVCO line from the CPU IC8 pin 62 Common 5 V converted from the SW5V line by the PS5 regulator circuit Q54 using the analog switch IC14 pin 14 and APC controller Q37 The PS5 regulator circuit is controlled by the PS5C line from the CPU IC8 pin 63 5 V for receiver circuits converted from the SW5V line by the R5 regulator circuit Q21 using the 2nd IF IC IC2 pin 4 RF Q12 and IF Q14 amplifiers etc The R5 regulator circuit is controlled by the R5C line from the CPU IC8 pin 53 5 V for the transmitter circuit converted from the SW5V line by the T5 regulator circuit Q22 using the pre drive amplifier Q3 The T5 regulator cir cuit is controlled by the T5C line from the CPU IC8 pin 54 PLL CIRCUIT Q51 D37 Q50 D38 R5 O VCO SHIFT Q4 L D3 TEN DEV signal from the
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52. o conan rre VOLTAGE DIAGRAM 24 22 iter al as BOARD LAYOUT 52 pi eme aga BLOCK DIAGRAM VOLTAGE DIAGRAM SECTION 1 SPECIFICATIONS H GENERAL Frequency coverage Version Receive Transmit USA 144 000 148 000 MHz 136 000 174 000 MHz GEN 136 000 174 000 MHz Specifications Guaranteed 144 148 MHz only Type of emission Frequency stability 10 C to 60 C 14 F to 140 F Tuning steps Antnna connector Power supply requirement negative ground Number of memory channel Call channel Scanning mode Current drain approx Usable temperature range Dimensions projections not included Weight with ant BP 222 il TRANSMITTER RF output power at 7 2 V DC with supplied battery pack Modulation system Maximum frequency deviation Spurious emissions Ext microphone connector H RECEIVER Receive system Intermediate frequencies Sensitivity Squelch sensitivity Adjacent channel selectivity Spurious response rejection Intermodulation rejection ratio Audio output power at 7 2 V DC Ext speaker connector F2D F3E 10 ppm 5 10 12 5 15 20 25 30 or 50 kHz BNC 50 2 7 2 V DC Operable voltage range 6 0 to 10 3 V 100 channels 1 channel Program Memory Skip Priority or Tone Transmit at High 5 5 W 2 0A at Low 0 5 W 0 7 A Receive Max audio 250 mA stand by 70 mA power saved 2
53. r 100 D 40225 D sseldorf Germany Phone 0211 346047 Fax 0211 333639 URL http www icomeurope com Icom Spain S L Crta de Gracia a Manresa Km 14 750 08190 Sant Cugat del Valles Barcelona SPAIN Phone 93 590 26 70 Fax 93 589 04 46 URL http www icomspain com Icom UK Ltd Unit 9 Sea St Herne Bay Kent CT6 8LD U K Phone 01227 741741 Fax 01227 741742 URL http www icomuk co uk Icom France S a Zac de la Plaine Rue Brindejonc des Moulinais BP 5804 31505 Toulouse Cedex France Phone 561 360303 Fax 561 36 03 00 URL http www icom france com Asia Icom Inc 6F No 68 Sec 1 Cheng Teh Road Taipei Taiwan R O C Phone 02 2559 1899 Fax 02 2559 1874 Count on us Icom Inc S 13802MZ C1 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan 2001 Icom Inc
54. rodyne system which converts receive signal twice improves the image rejection ratio and obtain stable receiver gain The 1st IF signal from the IF amplifier is applied to the 2nd mixer section of the FM IF IC IC2 pin 16 and is mixed with the 2nd LO signal to be converted to a 450 kHz 2nd IF sig nal The FM IF IC contains the 2nd mixer limiter amplifier quad rature detector and active filter circuits A 21 25 MHz 2nd LO signal is produced at the PLL circuit The 2nd IF signal from the 2nd mixer IC2 pin 3 passes through a ceramic filter FI2 to remove unwanted hetero dyned frequencies It is then amplified at the limiter amplifi er IC2 pin 5 and applied to the quadrature detector IC2 pins 10 11 to demodulate the 2nd IF signal into AF signals 4 1 5 AF CIRCUIT The AF amplifier circuit amplifies the demodulated AF sig nals to drive a speaker AF signals from the FM IF IC IC2 pin 9 are applied to the analog swtich ICA pin 1 via the AF filter circuit IC3b pins 6 7 The output signals from pin 2 3 are passed through the low pass filter IC3d pins 13 14 and are then applied to the analog swtich IC4 pin 9 10 again The signals from the IC4 pin 11 are applied to the AF power amplifier IC5 pin 4 after passing through the D A convertor IC10 pins 12 11 2nd IF filter t t 450 kHz pn A C122 R86 C121 m
55. the variable components Turn them slowly and smoothly DO NOT short any circuits or electronic parts An insulated turning tool MUST be used for all adjustments DO NOT keep power ON for a long time when the transceiver is defective DO NOT transmit power into a signal generator or a sweep generator ALWAYS connect a 40 dB to 50 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when using such test equipment 8 READ the instructions of test equipment thoroughly before connecting equipment to the transceiver NDUFONS TABLE OF CONTENTS SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION 10 10 1 10 2 10 3 10 4 11 12 SPECIFICATIONS INSIDE VIEWS DISASSEMBLY INSTRUCTIONS CIRCUIT DESCRIPTION RECEIVER GIRGULES 4 tt A MM ON de ERRAT TRANSMITTER CIRCUITS ua a e a a a ak aa a nre PEL CIRGUIT a Em OTHER CIRCUITS caniin i et daa di i i a daa NE eee POWER SUPPLY GIRGIULITS eiecti nr ne eta e Pet dok ee ln CPU PORT ALLOCATIONS seen nennen enne ADJUSTMENT PROCEDURES PREPARATION iii ne tii gana ka PLLADJUSTMENT ja de on ua ANAA md AUTA D PARTS LIST MECHANICAL PARTS AND DISASSEMBLY SEMI CONDUCTOR INFORMATION BOARD LAYOUTS MAIN UN liza dni a aa a ede a n to a d t a ua aa BC 146 OPTIONAL DESKTOP CHARGER INFORMATION PARTS LS A ee DISASSEMBLY INFORMATION lee crono non
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