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Icom IC-F4021S Service Manual

Other manuals for IC-F4021S: Instruction Manual

Summary of IC-F4021S

  • Page 1

    Service manual uhf transceivers s-14304hz-c1 july 2006.

  • Page 2

    This service manual describes the latest service information for the ic-f4021t/s, ic-f4022t/s and ic-f4023t/s uhf transceivers at the time of publication. Be sure to include the following four points when ordering replacement parts: 1. 10-digit icom parts numbers 2. Component name and informations 3...

  • Page 3

    Table of contents section 1 specifications section 2 inside views section 3 disassembly instructions section 4 optional unit installation section 5 circuit descripiton 5-1 receiver circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 4: Section 1

    1 - 1 section 1 specifications [usa], [gen] [eur] general • frequency coverage 400–470 mhz [usa], [gen], [eur] 450–512 mhz [usa] 450–520 mhz [gen] • type of emission wide 16k0f3e (25.0 khz) middle – 14k0f3e (20.0 khz) narrow 11k0f3e (12.5 khz) 8k50f3e (12.5 khz) • number of programable channels 128 ...

  • Page 5: Section 2

    Section 2 inside views 2 - 1 apc amplifier (ic701: ta75s01f) power amplifier (q701: rd07mvs1) drive amplifier (q702: rd01mus1) antenna switch (d701: 1sv307) lcd driver (ic20: lc75834w) +5 regulator q26: 2sb1580 q27: xp6501 q28: unr9213j cpu (ic22: hd64f2238btf13v) eeprom (ic10: hn58x2464ti) reset ic...

  • Page 6: Section 3

    Section 3 disassembly instructions 3 - 1 2 removing the main unit q remove the main seal f . W unscrew vr nut g , and remove the top plate h . 3 removing the pa unit q unscrew 3 screws m . W unsolder 4 points n , and take off the pa unit in the direction of the arrow. 1 removing the chassis unit q u...

  • Page 7: Section 4

    4 - 1 section 4 optional unit installation caution! Optional unit installation should be done at authorized icom servise center only. Install the optional unit as follows. Q rotate [vol] to turn the power off, and remove the battery pack. W remove the unit cover as below. (the removed unit cover can...

  • Page 8: Section 5

    Section 5 circuit description 5 - 1 5-1 receiver circuits 5-1-1 antenna switching circuit (pa unit) the antenna switching circuit toggles the receive (rx) line and transmit (tx) line. The received signals from the antenna are passed through the low-pass fi lter (ant unit; l801, l802, c802–c806) and ...

  • Page 9

    5 - 2 the af signals from the analog switch (ic3, pin 11) are applied to the volume buffer amplifi er (ic6, pin 9). The buffer- amplified af signals are adjusted its level (= audio level) by volume control pot (r315), then applied to the af power amplifier (ic15, pin 4) and amplified to the 0.5 w of...

  • Page 10

    5 - 3 5-2-3 transmit amplifiers (pa unit) the transmit signal from the vco is amplifi ed to the transmit output level by the transmit amplifi ers. The transmit signal from the tx/rx switches (main unit; d16 is on, d17 is off) is amplified by two pre-drive amplifiers (q704, q703), drive amplifier (q7...

  • Page 11

    5 - 4 5-3 pll circuits 5-3-1 voltage controlled oscillators (vcos; main unit) vco is an oscillator whose oscillating frequency is controlled by adding voltage (lock voltage). This transceiver has 2 vcos rx vco (q17, d9, d11) and tx vco (q16, d10, d13). The rx vco oscillates the 1st lo signals, and t...

  • Page 12

    5 - 5 cpu5 v reg u rator +5 v reg u rator s5 v reg u rator t5 v reg u rator r5 v reg u rator po w er s w itch r315 f701 (pa u nit ) q26–q2 8 ic17 q23 q24 q25, q4 8 v cc cpu5 cpu +5 v s5 v “s5c” “p w o n ” v oltage line control signal 8 22 8 7 88 “t5c” “r5c” t5 v led b acklight dri v er (q45), lcd dr...

  • Page 13

    5 - 6 5-5-1 cpu (ic22) pin no. Port name description 1−3 kr1− kr3 input ports for dealer-programmable keys. 4−8 ks0− ks4 output ports for dealer-programmable keys. 9 busy outputs “busy” signal to the dsp unit. 10 ccs outputs chip-select signal to the dsp unit. 11 sck outputs serial clock signal to t...

  • Page 14: Section 6

    Section 6 adjustment procedures 6-1 preparation when adjusting ic-f4020 series, cs-f3020 cloning software, cs-f3020 adj adjustment software (rev. 1.0 or later), opc-478/u jig cable (modifi ed opc-478/u cloning cable ; see the page 6-2) and the following test equipments are required. Equipment grade ...

  • Page 15

    6 - 2 ic-f4020 series fm deviation meter osciiloscope to the antenna connector attenuator 10 db or 20 db rf power meter 0.1–5 w/50 frequency counter standard signal generator 0.1 µv to 32 mv (–127 dbm to –17 dbm) caution! Do not transmit while the ssg is connected to the antenna connector sinad mete...

  • Page 16

    6 - 3 reference frequency receive sensitivity (manually) pll lock voltage preset s-meter reload data pll lock voltage (verify) squelch *; [eur] only ctcss/dtcs deviation fm deviation (narrow) fm deviation (middle*/wide) modulation balance transmit output power (hi) transmit output power (l2) transmi...

  • Page 17

    6 - 4 6-2 frequency adjustment select an adjustment item using [ ↑ ] / [ ↓ ] keys, then set to the specifi ed value using [ ← ] / [ → ] keys on the connected pc’s keyboard. Adjustment adjustment condition measurement value unit operation pll lock voltage [rx lva] 1 • channel • receiving : ch 1 pc sc...

  • Page 18

    6 - 5 6-3 transmit adjustment select an adjustment item using [ ↑ ] / [ ↓ ] keys, then set to the specifi ed value using [ ← ] / [ → ] keys on the connected pc’s keyboard. Adjustment adjustment condition measurement value unit operation output power [power (hi)] 1 • channel • transmitting : ch 3 top...

  • Page 19

    6 - 6 6-4 receive adjustment select an adjustment item using [ ↑ ] / [ ↓ ] keys, then set to the specifi ed value using [ ← ] / [ → ] keys on the connected pc’s keyboard. Adjustment adjustment condition measurement value unit location receive sensitivity [bpf (t1)] [bpf (t2)] note: “receive sensitiv...

  • Page 20: Section 7

    7 - 1 section 7 parts list m.=mounted side (t: mounted on the top side, b: mounted on the botom side) [main-a unit] (for low band) ref order description m. H/v no. No. Location ic2 1140005991 s.Ic mb15a02pfv1-g-bnd-ere1 t 81.2/34.5 ic3 1130011770 s.Ic cd4066bpwr b 40.4/22 ic5 1110005320 s.Ic njm1340...

  • Page 21

    7 - 2 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) s.=surface mount [main-a unit] (for low band) ref order description m. H/v no. No. Location r78 7030005310 s.Res erj2gej 124 x (120 k) b 74.9/29.1 r79 7030006020 s.Res rr0510p-682-d (6.8 k) b 74.7/34.3 r80 7030005060 s....

  • Page 22

    7 - 3 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) [main-a unit] (for low band) ref order description m. H/v no. No. Location r364 7030005160 s.Res erj2gej 105 x (1 m) b 29.4/14.9 r367 7030004980 s.Res erj2gej 101 x (100) b 23.9/9.8 r368 7030005090 s.Res erj2gej 104 x (...

  • Page 23

    7 - 4 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) s.=surface mount [main-a unit] (for low band) ref order description m. H/v no. No. Location c250 4030016930 s.Cer ecj0eb1a104k b 43.9/6.8 c251 4030016950 s.Cer ecj0eb1a473k b 34.7/10.9 c252 4030016950 s.Cer ecj0eb1a473k...

  • Page 24

    7 - 5 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) [main-b unit] (for high band) ref order description m. H/v no. No. Location q18 1590001400 s.Tr xp1214 (tx) t 71.3/31.7 q19 1590003290 s.Tr unr9213j-(tx) t 71.4/29.3 q20 1530002851 s.Tr 2sc4116-bl (te85r f) b 98.6/25.3 ...

  • Page 25

    7 - 6 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) s.=surface mount [main-b unit] (for high band) ref order description m. H/v no. No. Location r155 7030005720 s.Res erj2gej 563 x (56 k) b 35.9/37.1 r156 7030005050 s.Res erj2gej 103 x (10 k) b 48.1/16.4 r157 7030004980 ...

  • Page 26

    7 - 7 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) [main-b unit] (for high band) ref order description m. H/v no. No. Location c80 4550007090 s.Tan teesva 1a 226m8r t 96.6/35.1 c81 4030017420 s.Cer ecj0ec1h470j t 98.2/38.1 c82 4030017420 s.Cer ecj0ec1h470j b 102.7/32.5 ...

  • Page 27

    7 - 8 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) s.=surface mount [main-b unit] (for high band) ref order description m. H/v no. No. Location c386 4030016930 s.Cer ecj0eb1a104k t 58.9/13.5 c387 4030016930 s.Cer ecj0eb1a104k t 60.9/14.6 c388 4030016930 s.Cer ecj0eb1a10...

  • Page 28

    7 - 9 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) [pa-a unit] (for low band) ref order description m. H/v no. No. Location c785 4030016790 s.Cer ecj0eb1c103k b 16.8/23.7 c786 4030018860 s.Cer ecj0eb0j105k b 16.4/19.8 c787 4030017460 s.Cer ecj0eb1e102k b 16.4/20.7 c788 ...

  • Page 29

    7 - 10 m.=mounted side (t: mounted on the top side, b: mounted on the botom side) s.=surface mount [connect unit] ref order description m. H/v no. No. Location c901 4030017460 s.Cer ecj0eb1e102k t 6.1/7 c902 4030017420 s.Cer ecj0ec1h470j t 6.1/6 c905 4030017420 s.Cer ecj0ec1h470j t 9.4/7.3 c906 4030...

  • Page 30: Section 8

    Section 8 mechanical parts and disassembly 8 - 1 screw abbreviations bt: self-tapping ph: pan head zk, zk3: black fh: flat head ni: nickel sus: stainless ep1 ep2 mp1 mp2 mp3 mp4 j1 6910015910 connector ant connector-104 1 j2 6910015860 connector imsa-6277s-02a-g 1 sp1 2510001061 speaker k036na500-67...

  • Page 31

    8 - 2 mp2* (c) mp33 (c) mp20 (c) sp1 (c) mp12* (c) main unit mp28 (c) mp6 (m) mp1 (m) mp5 (m) mp4 (m) ep7 (m) ds3 (m) mp3 (m) mp28 (c) mp28 (c) r315 (m) mp702 (p) mp2 (m) mp28 (c) mp28 (c) j701 (p) j901 (cn) pa unit connect unit mp28 (c) ant unit mp1 (c) mp801 (a) mp17 (c) mp35 (c) j1 (c) mp8 (c) mp...

  • Page 32

    Section 9 semiconductor information • transistors and fet's • diodes 9 - 1 b e c b c e b e c b e c b e c b e c b e c b e c b e c s d g b e c b e c b c e g d s s d g g s d d s g2 g1 g1 g2 s d b e c b e c e1 b1 b2 c1 c2 e1 c2 b1 c1 e2 b2 e1 b2 e2 c1 c2 b1 e1 e2 b2 c1 b1 c2 g s d s 2sa1577 t106 r 2sb11...

  • Page 33

    H5 h10 h15 h20 h25 h30 h35 h40 h45 h50 h55 h60 h65 h70 h75 h80 h85 h90 h95 h100 h105 h0 v5 v10 v15 v0 v25 v30 v35 v20 v45 v40 to speaker “sp1” (chassis) j4 4 2 3 1 sp gnd gnd gnd top switch mic 7 4 1 p0 p1 p2 p3 0 8 5 2 # 9 6 3 section 10 board layouts 10 - 1 • bc-160 (top view) • ant unit (top view...

  • Page 34

    H5 h10 h15 h20 h25 h30 h35 h40 h45 h50 h55 h60 h65 h70 h75 h80 h85 h90 h95 h100 h105 h0 v5 v10 v15 v0 v25 v30 v35 v20 v45 v40 20 1 21 40 j5 opv1 opv2 opv3 gnd opt3 opt2 opt1 sigo bu s y nc bref nc dmi mcin dmo mco t ptt o ptti gnd d_if gnd cck csi cso nc cirq css rem nc afout disc rmut bepo afon mmu...

  • Page 35

    Section 11 block diagram 11 - 1 explanatory notes +b line lpf ant lpf ic6 lm2902pwr lpf lpf ic6 lm2902pwr lpf ic7 njm12902v reset ic8 bd5242g shift sw d6 ma2s077 ant sw d701 1sv307 pwr amp q701 rd07mvs1 tx/rx sw d16:1sv307 d17: ma2s077 rx vco q17 2sc4226 tx vco q16 2sc4226 ripple fil q20 2sc4116 fil...

  • Page 36

    Section 12 voltage diagrams 12 - 1 %xplanatorynotes 6/,4!'%,).% 48,).% 28,).% #/--/.,).% ;,=,owband ;(=(ighband -%!352%-%.4#/.$)4)/.3 $)')4!,6/,4-%4%2 &2%15%.#9-(z;(ighband= -(z;,owband= , n( , n( # # # p # p # # $ -! $ (6#" $ (6#" $ (6#" # , m ( # # # p # , m ( # # p # # p # p # p # # # p # p # p 8...

  • Page 37

    12 - 2 explanatory notes voltage line tx line rx line common line c707 0.001 c703 0.001 c702 47p r729 0.15 l901 blm21p300s l902 blm21p300s l903 blm21p300s c708 0.001 c734 470p d702 rb706f-40 r706 4.7k c723 47p c718 47p r703 1k c754 0.001 d703 rb706f-40 r726 1k r727 2.7k r710 4.7k r715 22k r712 22k c...

  • Page 38

    Section 13 bc-160 13 - 1 q1 2sc4081 r4 10 r18 r3 560 r5 0.12 r35 r31 10k r37 120k r28 r38 r29 1ss355 d2 d5 1ss355 c6 10 c11 0.01 c12 0.01 c8 0.01 c25 c26 c21 c22 0.1 0.01 c28 c23 c24 10k 0.1 0.01 0.01 c27 1k 39k 0.01 0.01 0.01 c1 0.001 0.01 c3 d4 d an202k c19 c16 r17 10k r16 560k r15 c18 56k 0.01 r1...

  • Page 39

    6f no.68, sec. 1 cheng-teh road, taipei, taiwan, r.O.C. Phone : +886 (02) 2559 1899 fax : +886 (02) 2559 1874 url : http://www.Asia-icom.Com e-mail : sales@asia-icom.Com zac de la plaine, 1, rue brindejonc des moulinais bp 5804, 31505 toulouse cedex, france phone : +33 (5) 61 36 03 03 fax : +33 (5) ...

  • Page 40

    1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan s-14304hz-c1 © 2006 icom inc..