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Icom IC-R20 Service Manual

Summary of IC-R20

  • Page 1

    Communications receiver ic-r20 service manual.

  • Page 2

    Introduction danger this service manual describes the latest service information for the ic-r20 communications receiver at the time of publication. This service manual covers each versions. Model ic-r20 version [usa], [exp-01], [can] [eur], [exp-02] [uk], [sea] ac adapter bc-149a bc-149d – ordering ...

  • Page 3

    Section 1 specifications section 2 inside views section 3 disassembly instructions section 4 circuit description 4-1 receiver circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1 4-2 pll circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 4: Section 1

    1 - 1 section 1 specifications • ic-r20 m general • frequency coverage : • mode : fm, wfm, am, ssb, cw • no. Of memory channel : 1250 channel (incl. Scan edge and auto memory write ch.) • frequency stability : ±6 ppm max. • tuning steps : 0.01, 0.1, 1, 5, 6.25, 8.33*, 9*, 10, 12.5, 15, 20, 25, 30, 5...

  • Page 5

    1 - 2 • bc-156 • input voltage : 8.0–16.0 v • charging current : 0.96–1.44 a (rapid charging) • usable temperature : 0˚c to +35˚c (+32˚f to +95˚f) • timer device : 192–288 minutes (rapid charging) 12–18 minutes (reserve charging) • protect function : function bp-206 condition bc-156 action led condi...

  • Page 6: Section 2

    2 - 1 section 2 inside views 2-1 rf unit • top view • bottom view highpass filter circuit (c854, c856, c858) 470—833 mhz rf amplifier (q24: 2sc5008) 1g rf amplifier (q26: 2sc5624) b-band rf amplifier (ic18: pc2746tb) b-band 1st mixer (ic15: pc2757tb) b-band 1st if filter (266.7 mhz) (fi1: efch266mkq...

  • Page 7

    2 - 2 2-2 logic unit • top view • bottom view bfo circuit ic6: sn74ahc1gu04dbvr x2: csbfb543k af amplifier regulator (q7: xp1501 q9: 2sb1132) af amplifier (ic15: ta31056f q8: 2sa1588) af pre-amplifiers (q12, q16: 2sc4617) +3 regulators (q10, q15: 2sa1362) reset ic (ic2: bd5228g) main cpu (ic3: m3062...

  • Page 8: Section 3

    Section 3 disassembly instructions (1) removing the rear panel q unscrew 4 screws, a (2 × 115 mm, black). W unscrew 2 screws, b (2 × 8 mm, black). E unplug w1 and j8 (logic unit) to separate the front and the rear panels. (3) removing the rec unit q unscrew 4 flat-head screws, h (2 × 4 mm, silver). ...

  • Page 9: Section 4

    4 - 1 4-1 receiver circuits 4-1-1 band switching circuit (rf unit) the rf signals from the antenna connector pass through the limiter (d68) and an attenuator* (d69). The signals are then applied to the antenna switching circuit (d3, d11, d13, d65, d66 and d73–d75 ). *above 2 ghz rf signals do not pa...

  • Page 10

    4 - 2 (3) hf-h (above 15 mhz, below 30 mhz) signals rf signals (15–30 mhz) from an attenuator (d69) pass through the low-pass filter (l123–l125 and c851–c853), band switch (d73) and bandpass filter (l81–l84 and c511–c520). The filtered signals pass through another band switch (d64), and are then amp...

  • Page 11

    4 - 3 • b-band circuit the rf signals from the band switch (d32, d36, d143 and d147) are amplified at the rf amplifier (ic18, pins 1, 4), and are mixed with 1st lo signals at the 1st mixer circuit (ic15, pin 1) to produce a 266.7 mhz 1st if signal. The 1st if sig- nal is output from pin 6, and passe...

  • Page 12

    4 - 4 (3) am mode the 3rd if signal is output from the fm if ic (ic2, pin 3), and passes through the mode switch (d109) and ceramic bandpass filter (fi2). The filtered signal passes through the mode switch (d112), and is then applied to the if amplifier (q531). The amplified signal is demodulated at...

  • Page 13

    4 - 5 (3) am mode the 3rd if signal is output from the fm if ic (ic17, pin 3), and passes through the mode switch (d134) and ceramic bandpass filter (fi8). The filtered signal passes through the mode switch (d136), and is then applied to the if amplifier (q544). The amplified signal is demodulated a...

  • Page 14

    4 - 6 (1) a-band circuit a portion of the af signals from the fm if ic (rf unit; ic2, pin 9) passes through the low-pass filter (logic unit; c161, c164, r169 and r175) via the “a_det” line to remove af (voice) signals and is applied to the ctcss decoder inside the cpu (logic unit; ic3, pin 89) via t...

  • Page 15

    4 - 7 4-2 pll circuits 4-2-1 pll circuit a pll circuit provides stable oscillation of the 1st lo fre- quencies. The pll circuit compares the phase of the divid- ed vco frequency to the reference frequency. The pll out- put frequency is controlled by the divided ratio (n-data) of a programmable divid...

  • Page 16

    4 - 8 a portion of the signal from the buffer amplifier (ic2) is amplified at the buffer amplifier (q8) and is then fed back to the pll ic (ic3, pin 11) as the comparison signal. • b-band circuit (1stbvco board) the oscillated signal at 1st b-vco circuits is applied to the buffer amplifiers (ic2) vi...

  • Page 17

    4 - 9 • b-band circuit (2nddvco board) the 2nd d-vco circuit (q1 and d1) generates 247.0500 mhz and 286.3500 mhz. The oscillated signal is applied to the 2nd mixer (rf unit; ic16, pin 3), and is then mixed with the 1st if signal. A part of oscillated signal from the 2nd c-vco circuit is applied to t...

  • Page 18

    4 - 10 4-2-7 bfo circuit (logic unit) the oscillated signal at the bfo vco circuit (ic6, x2) is applied to the main unit via the j5 (pin 35) as the bfo, and is then amplified at the bfo amplifier (rf unit; q530). The amplified signal is mixed with 3rd if signal to demodulate to af signal on ssb/cw m...

  • Page 19

    4 - 11 description receive 3 v line from the logic unit via the j1, pin 37. The voltage is supplied to the rf (ic19), if (q5) and lo (q540) amplifiers, 1st (ic1) and 2nd (ic10) mixers, regulators, etc. Receive 3 v line from the logic unit via the j1, pin 22. The voltage is supplied to the rf (ic18),...

  • Page 20

    4 - 12 48 49–52 53 54 55–61 63 64 65 66 67 68 69 70 71 72 74 75 76 77 78 79–81 98 99 outputs strobe signal to the d/a con- verter ic (ic22, pin 1). Output key matrix signals. • input port for the matrix signal. • outputs power on/off control sig- nal. • input port for the matrix signal. • outputs b-...

  • Page 21

    4 - 13 18 19 24 25 26–28 35 36 25 input port for the usb reset signal. Input port for the usb suspend signal. Outputs recording/playing select sig- nal. Input port for the adpcm command waiting signal. Input ports for the adpcm buffer sig- nals. Output recording mute signals. Input port for the powe...

  • Page 22

    4 - 14 4-6 bc-156 circuit description 4-6-1 dc/dc converter circuit (main unit) input voltage (8–16 v) from the bc-123a/e pass through reverse protection circuit (d6) via the j1. The voltage pass through the current limiter (r19) which can pass less than 2.0 a via the fuse (f1), and is then applied ...

  • Page 23

    5 - 1 section 5 adjustment procedures 5-1 preparation almost adjustments must be adjusted on the adjustment mode. The shorten plug (see below) is required when entering the adjustment mode. ‘ ‘ required test equipment ‘ ‘ entering the adjustment mode q connect the shorten plug to the [sp] jack. W pu...

  • Page 24

    5 - 2 5-2 software adjustments reference frequency [ref] center voltage bfo [lsb] [usb] [cw] ssb-if shift [lsb-ifs] [usb-ifs] 1 1 2 1 2 3 1 2 3 4 • connect the frequency counter to the check point cp18 on the rf unit. • receiving • dual watch mode : on • set the receiver to [a-band] and fm mode. • o...

  • Page 25

    5 - 3 cp11 center voltage check point (b-band) center voltage adjustment (b-band) l105 cp1 center voltage check point (a-band) center voltage adjustment (a-band) l21 • rf unit bottom view bfo check point • bfo check point (logic unit top view) reference frequency check point cp18 • rf unit top view.

  • Page 26

    5 - 4 software adjustments–continued afc [afc] (fm a-band) (wfm a-band) (fm b-band) (wfm b-band) tracking [trl/trh] (0.495 mhz bar antenna tuning) (1.620 mhz bar antenna tuning) (118.1 mhz rf amplifier tuning) (174.9 mhz rf amplifier tuning) (330.1 mhz rf amplifier tuning) (469.9 mhz rf amplifier tu...

  • Page 27

    5 - 5 software adjustments–continued s-meter [s-m] (1.81 mhz fm mode) (1.81 mhz wfm mode) (14.1 mhz fm mode) (14.1 mhz wfm mode) (145.1 mhz fm mode) (145.1 mhz wfm mode) (201.1 mhz fm mode) (201.1 mhz wfm mode) (435.1 mhz fm mode) (435.1 mhz wfm mode) 1 2 3 4 5 6 7 8 9 10 • mode : fm • connect an ss...

  • Page 28

    5 - 6 software adjustments–continued s-meter [s-m] (1400.1 mhz fm mode) (1400.1 mhz wfm mode) s-meter [s-m] (145.1 mhz fm mode) (145.1 mhz wfm mode) (435.1 mhz fm mode) (435.1 mhz wfm mode) (650.1 mhz fm mode) (650.1 mhz wfm mode) (1100.1 mhz fm mode) (1100.1 mhz wfm mode) 11 12 13 14 15 16 17 18 19...

  • Page 29

    5 - 7 software adjustments–continued s-meter [s-m] (2510.1 mhz fm mode) (2510.1 mhz wfm mode) 21 22 • mode : fm • connect an ssg to the antenna connector and set as level : 0.56 µv* (–112 dbm) frequency : 2510.1 mhz modulation : ±1 khz deviation : ±3.5 khz • receiving • mode : wfm • connect an ssg t...

  • Page 30: Section 6

    [1stavco board] [1stavco board] ic2 1110005180 s.Ic µpc2746tb-e3 b ic3 1130011660 s.Ic mb15t61ulpva-g-er b q1 1530003260 s.Transistor 2sc5006-t1 t q2 1530003260 s.Transistor 2sc5006-t1 t q3 1530003260 s.Transistor 2sc5006-t1 t q6 1560000530 s.Fet 2sk880-gr (te85r) b q7 1530003000 s.Transistor 2sc411...

  • Page 31

    [1stbvco board] [1stavco board] c67 4030017460 s.Ceramic ecj0eb1e102k [eur], [uk], [usa], [can] b j1 6910015520 connector imsa-9230b-1-07z064-t b j2 6910015510 connector imsa-9230b-1-08z064-t b ep1 0910058163 pcb b 6080c ic2 1110005180 s.Ic µpc2746tb-e3 b ic3 1130011660 s.Ic mb15t61ulpva-g-er b q1 1...

  • Page 32

    [2ndcvco board] [1stbvco board] c30 4030017460 s.Ceramic ecj0eb1e102k t c31 4030017460 s.Ceramic ecj0eb1e102k b c35 4030017770 s.Ceramic ecj0eb1e332k b c37 4550003220 s.Tantalum teesva 1e 105m8l b c38 4550000930 s.Tantalum teesva 1d 684m8l b c39 4550000930 s.Tantalum teesva 1d 684m8l b c40 403001679...

  • Page 33

    [downconv board] [2nddvco board] r19 7030005120 s.Resistor erj2gej 102 x (1 k Ω) t r21 7030005120 s.Resistor erj2gej 102 x (1 k Ω) t r22 7030007280 s.Resistor erj2gej 331 x (330 Ω) b c1 4550006910 s.Tantalum teesvp 1c 334m8r t c2 4030017500 s.Ceramic ecj0ec1h560j t c3 4030017400 s.Ceramic ecj0ec1h22...

  • Page 34

    [rec unit] [downconv board] c50 4030017730 s.Ceramic ecj0eb1e471k b c51 4030017730 s.Ceramic ecj0eb1e471k b c52 4030017730 s.Ceramic ecj0eb1e471k b c53 4030016790 s.Ceramic ecj0eb1c103k b c54 4030017420 s.Ceramic ecj0ec1h470j b c55 4030017420 s.Ceramic ecj0ec1h470j b c56 4030017420 s.Ceramic ecj0ec1...

  • Page 35

    [logic unit] [logic unit] q28 1530003630 s.Transistor 2sc4617 tls b q29 1590003290 s.Transistor unr9213j-(tx) b q30 1520000650 s.Transistor 2sb1201-s-tl t q31 1590002950 s.Fet hat1023r-el t q32 1530003630 s.Transistor 2sc4617 tls t q33 1520000460 s.Transistor 2sb1132 t100 r t q34 1590003390 s.Transi...

  • Page 36

    [logic unit] [logic unit] r127 7030005170 s.Resistor erj2gej 474 x (470 k Ω) b r128 7030008300 s.Resistor erj2gej 184 x (180 k Ω) b r129 7030008300 s.Resistor erj2gej 184 x (180 k Ω) b r130 7030008300 s.Resistor erj2gej 184 x (180 k Ω) b r131 7030009150 s.Resistor erj2gej 824 x (820 k Ω) b r132 7030...

  • Page 37

    [logic unit] [logic unit] c77 4030017460 s.Ceramic ecj0eb1e102k b c78 4030017490 s.Ceramic c1608 jb 1a 105k-t b c79 4030017490 s.Ceramic c1608 jb 1a 105k-t b c80 4550006700 s.Tantalum ecst1ay106r b c81 4030017490 s.Ceramic c1608 jb 1a 105k-t b c82 4550006620 s.Tantalum ecst0jy226r b c83 4550006620 s...

  • Page 38

    [rf unit] [rf unit] ic1 1110005230 s.Ic µpc2757tb-e3 t ic2 1110003200 s.Ic ta31136fn (el) t ic10 1110005230 s.Ic µpc2757tb-e3 t ic12 1130011770 s.Ic cd4066bpwr b ic14 1110006360 s.Ic m62366gp d60j t ic15 1110005230 s.Ic µpc2757tb-e3 t ic16 1110005230 s.Ic µpc2757tb-e3 t ic17 1110003200 s.Ic ta31136f...

  • Page 39

    [rf unit] [rf unit] fi1 2040001200 s.Saw efch266mkqp1 t fi2 2020001270 ceramic cfwlb450ke2a-b0 (cfwm450e) b fi3 2010002280 s.Monolith fl-293 (19.650 mhz) t fi4 2040001190 s.Saw efch429mkqp1 t fi6 2020001470 ceramic cfwla450kl6a002-b0 (cfws450k3) b fi7 2010002280 s.Monolith fl-293 (19.650 mhz) t fi8 ...

  • Page 40

    [rf unit] [rf unit] r245 7030005220 s.Resistor erj2gej 223 x (22 k Ω) b r246 7030005110 s.Resistor erj2gej 224 x (220 k Ω) b r247 7030011150 s.Resistor erj2gej 2r7 x (2.7 Ω) b r323 7030004990 s.Resistor erj2gej 221 x (220 Ω) t r324 7030004980 s.Resistor erj2gej 101 x (100 Ω) t r325 7030005570 s.Resi...

  • Page 41

    [rf unit] [rf unit] r539 7030005300 s.Resistor erj2gej 150 x (15 Ω) b r540 7030005300 s.Resistor erj2gej 150 x (15 Ω) b r541 7030007270 s.Resistor erj2gej 151 x (150 Ω) t r542 7030007340 s.Resistor erj2gej 153 x (15 k Ω) t c5 4030017730 s.Ceramic ecj0eb1e471k t c12 4030017420 s.Ceramic ecj0ec1h470j ...

  • Page 42

    [rf unit] [rf unit] c674 4030017420 s.Ceramic ecj0ec1h470j b c676 4030017400 s.Ceramic ecj0ec1h220j t c677 4030017350 s.Ceramic ecj0ec1h020b t c678 4030017460 s.Ceramic ecj0eb1e102k t c679 4030017460 s.Ceramic ecj0eb1e102k t c683 4030017460 s.Ceramic ecj0eb1e102k t c686 4030018140 s.Ceramic ecj0eb1h...

  • Page 43

    [tanshi board] [rf unit] c894 4030016790 s.Ceramic ecj0eb1c103k t c895 4030017730 s.Ceramic ecj0eb1e471k t c896 4030016790 s.Ceramic ecj0eb1c103k t c897 4030017460 s.Ceramic ecj0eb1e102k b c898 4030017460 s.Ceramic ecj0eb1e102k b c899 4030017460 s.Ceramic ecj0eb1e102k b c900 4030017460 s.Ceramic ecj...

  • Page 44

    [main unit] c10 4030006860 s.Ceramic c1608 jb 1h 102k-t t c12 4510004590 electrolytic 16 mv 470 hc t c13 4030006860 s.Ceramic c1608 jb 1h 102k-t t c14 4030006860 s.Ceramic c1608 jb 1h 102k-t t c15 4030006860 s.Ceramic c1608 jb 1h 102k-t t c16 4550000540 s.Tantalum teesva 1v 154m8l t c18 4030011600 s...

  • Page 45: Section 7

    7 - 1 section 7 mechanical parts and disassembly s24 2250000200 encoder tp90n00e20-16f-1517 1 s25 2250000200 encoder tp90n00e20-16f-1517 1 ds12 5030002690 lcd m3-0243tiy 1 mp2 8930062480 2699 lcd holder 1 mp3 8930062530 2699 battery spring 2 mp4 8930062540 sponge (ho) 1 mp5 8510016370 2699 logic shi...

  • Page 46

    7 - 2 4.2 2 unit; mm (inch) 140 1 ( 1 / 32 ) ( 5 / 32 ) ( 3 / 32 ) ( 1 / 32 ) ( 19 / 32 ) (2 1 / 32 ) (1 9 / 32 ) (1 11 / 32 ) (4 3 / 8 ) ( 1 / 8 ) (5 9 / 16 ) (6 3 / 16 ) 58 1 32.9 33.9 14.8 34.8 0.9 157 unit abbreviations (c) : chassis parts (r) : rf unit (d) : downconv board (l) : logic unit (re)...

  • Page 47

    8 - 1 section 8 semi-conductor information • transistor and fet’s ic-r20 bc-156 2sb1132 r (symbol: bar) b e c b e c b e c 2sa1362-gr (symbol: aeg) 2sa1586-gr (symbol: sg) 2sa1588 gr (symbol: zg) b e c 2sc4116 gr (symbol: ll) b e c b e c 2sc4117-bl (symbol: cl) b e c b e c 2sc4226 r24 (symbol: r24) b...

  • Page 48

    9 - 1 the combination of this page and the next page shows the unit layout in the same configuration as the actual p.C. Board. J1 1 40 20 21 ld2 +3s gnd b_vco2 b_vco3 b_vco4 pllck plldata str2 hfc b1c b2c b3c d clk ld1 ear a_vco1 a_vco2 gnd b_det b_r3v gnd b_noise b_rssi +3v gnd pllbstb plldstb vp g...

  • Page 49

    9 - 2 the combination of this page and the previous page shows the unit layout in the same configuration as the actual p.C. Board. +3v a_r3v a_vco1 a_vco2 a_vco3 gnd gnd a_vco_out 1 8 to 1stavco board j2 vp gnd pllastb plldata pllck aps osc gnd c_vco_out aps gnd a_r3v 1 7 to 1stavco board j1 hj2 hj3...

  • Page 50

    9 - 3 the combination of this page and the next page shows the unit layout in the same configuration as the actual p.C. Board. Gnd sub_3c vol_up_down sql txd rxd 1 6 to rec unit j7 hj9 j9 dc from the external dc power supply j6 j3 b dial a dial aout a_atn b_atn gnd 1 4 to rec unit j6 hj8 cp2 cp4 cp1...

  • Page 51

    9 - 4 the combination of this page and the previous page shows the unit layout in the same configuration as the actual p.C. Board. Afout gnd 1 2 1 2 j8 sp w18 w19 + – logic unit • bottom view.

  • Page 52

    9 - 5 the combination of this page and the next page shows the unit layout in the same configuration as the actual p.C. Board. Gnd aout b_ain a_atn 4 1 to logic unit hj8 j6 vl down usb vl up sql +3v sub_3c vol_up_down sql cpu_tx cpu_rx 1 6 to logic unit hj9 j7 9-3 rec unit • top view.

  • Page 53

    The combination of this page and the previous page shows the unit layout in the same configuration as the actual p.C. Board. 9 - 6 rec unit • bottom view.

  • Page 54

    The combination of this page and the next page shows the unit layout in the same configuration as the actual p.C. Board. J2 j1 a_r3v gnd aps c_vco_out gnd to rf unit hj5 1 5 osc gnd +3v pllck plldata plldstb to rf unit hj4 6 1 j2 j1 b r3v gnd bps d_vco_out gnd to rf unit hj9 1 5 osc gnd +3v pllck pl...

  • Page 55

    The combination of this page and the previous page shows the unit layout in the same configuration as the actual p.C. Board. If_out gnd pllestb plldata pllck osc gnd rf_in 1 8 to rf unit hj10 gnd 1glo 2glo down_conv +3v +3s 1 6 to rf unit hj11 j1 j2 j2 b_vco_out gnd b_vco4 b_vco3 b_vco2 b_vco1 b_r3v...

  • Page 56

    10 - 1 d68 1sv172 antenna bpf ceramic am/nfm fi8 cfwm450e am det q545 ×1/2 xp6501 1sv308 d65–d66, d73, d74 d64, d67, d70: 1sv308 d76: ma2s077 lpf bpf att d69: 1sv308 q507: 2sc5008 q508: xp4312 d100: svc347 q513: xp4601 rf amp ic18: µpc2746tb bpf rf amp q14: 2sc5006 d166: ma2s728 d162: ma2s728 bpf d1...

  • Page 57: Rec Unit

    10 - 2 reset eeprom x1: cr-717 pre amp pre amp af amp +3 reg +3 reg +3 reg +3 reg +3 reg lpf lpf +3 reg x2: cr-708 x1: cr-672 x2: csbf453k ic3: m30620 lcd drive bfoc dc-dc reg vp civ-interface light ic2: bd5228g ic1: cat24wc256 cpu3v ic2: m30620 subcpu memory usb interface ic6: k9f5608u0c-ycb0 j2 af...

  • Page 58

    3.0v 433 mhz 0v att-on 2.9v 5 mhz 2.0v 145 mhz 2.6v 145 mhz 51 mhz 2.9v 2.9v 145 mhz 2.6v 433 mhz 2.9v 433 mhz 3.0v 145 mhz 2.9v 470 mhz 2.9v 1295 mhz 1.9v 433 mhz 1 2 3 4 5 6 7 8 b_r3v ifo16 agc att ifo10 a_r3v a-agc antsw b_trac a_attc agc agc agc agc agc agc agc agc agc agc agc r220 15 c214 0.001...

  • Page 59

    11 - 2 2.9v wfm 433 mhz 1.5v 3.0v 433 mhz 2.9v nb-on 1.0v nb-on 2.9v cw 1.8v 1.6v 3.0v c713 0.1 2.9v wfm 2.6v cw 3.0v 145 mhz 2.9v cw +3v j1 1stavco board 2ndcvco board 2nddvco board 1stbvco board logic unit ifo16 b_r3v agc att ifo10 a_r3v a-agc antsw b_trac a_attc r208 10k c264 0.001 r57 15k c102 0...

  • Page 60

    11 - 3 c177 0.001 d36 ma133 c88 0.001 r26 1k c152 1 q26 2sj144 r31 47k q31 hat1023r 5 d 6 d 7 d 8 d 1 s 2 s 3 s 4 g c106 33 q8 2sa1588 ic5 ta31056f 1 in 2 vref 3 nf 4 comp 5 gnd 6 out 7 tb 8 vcc c1 0.1 q25 xp6501 1 2 3 4 5 6 c114 0.001 r56 4.7k c178 0.001 ic9 r1111n321b 1 vdd 2 gnd 3 ce 4 nc 5 vout ...

  • Page 61

    11 - 4 11-3 rec unit ic9 sn74ahc1g66hdbv ic8 sn74ahc1g66hdbv ic7 ml2302tb ic6 k9f5608u0c ic4 sn74ahc1g02dck ic5 sn74ahc1g32dck ic2 m30620fcpgp ic10 r1111n321b ic1 bd5228g ic3 ft245bm q1 unr921nj q2 unr9119j rec unit j2 6 7 8 9 1 2 3 4 5 r7 27 r6 27 ep1 ep3 ep4 c1 0.01 d+ d– vbus vbus vbus vbus vbus ...

  • Page 62

    11 - 5 1stavco board q13 2sc5277 q6 2sk880 q7 2sc4117 ic3 mb15t61ul q8 2sc5231 q12 xp1113 q11 xp1113 ic2 µpc2746tb q3 2sc5006 q2 2sc5006 q1 2sc5006 q9 2sc5231 r46 1k c31 0.01 r49 180k c59 0.01 c60 0.01 r47 1k r48 1k c40 0.01 r24 3.3k r28 15k c35 0.0033 c39 0.68 c38 0.68 r26 6.8k c37 1 r25 220 r27 8....

  • Page 63: 2Ndcvco Board

    11 - 6 2ndcvco board q4 2sc4617 q1 fh102 q3 2sc5277 ic1 mb15e03sl c3 15p r4 1k 1 2 3 4 5 6 c7 4p l2 33nh l3 22nh c8 1p c9 5p c10 5p r10 100 c1 0.33 c30 0.001 c4 10p d1 1sv314 c2 18p c5 12p l4 0.22 µh c6 0.001 r3 1k r2 10k r1 47 l1 18nh c33 2p c_vco_out c_vco_out 1cvco c31 0.001 c32 10 r21 1k gnd gnd...

  • Page 64: Downconv Board

    11 - 7 downconv board q6 2sc5277 ic4 mb15e03sl q2 2sc5006 q3 unr911j ic3 µpc2757tb q5 xp1113 q4 2sc5624 q1 2sc5006 ic2 µpc2749tb 1001 mhz or 2002 mhz lo r29 1k c47 0.01 r30 180k r31 1k r32 1k c48 0.01 c49 0.01 c53 0.01 c51 470p 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 osci osco vp vcc do gnd xfin fin ...

  • Page 65: Section 12

    12 - 1 section 12 bc-156 desktop chager information sw reg charg control ic2:njm2360m q7:2sj377 d2:sb20-03p ic1:mm1433evbe q1:2sb1184 main unit 8–16v dc in vcc chg select rl1 i sense r1 chg1 chg2 tanshi board (c) : chassis parts (m) : main unit (t) : tanshi board mp3 (c) mp3 (c) mp3 (c) mp3 (c) mp2 ...

  • Page 66: Main Unit

    D5 dwa010 chg on 1.2v chg off 0v main unit tanshi board q3 unr9214j q2 dta114ee q4 dta114ee q8 dtc114ee ic2 njm2360am q7 2sj377 ic1 mm1433evbe q1 2sb1184 q5 dta114ee q6 dta114ee d6 sb20-03p c7 0.22 c8 100 c1 0.22 c2 470 r19 0.15 (1w) f3 s-n5051 f2 s-n5051 j1 ext. Dc in 13.5v f1 fgb 2a 1 cs 2 es 3 ct...

  • Page 67

    1 f1 cp1 cp2 cp3 cp4 cp5 cp6 j4 chgout chgout det2 batt– det1 batt+ sw cont thd 1 9 to tanshi board j1 j1 thd cont 5v batt+ det1 batt– det2 chgout chgout 9 1 to bc-156 main unit j4 12 - 3 12-4 bc-156 board layouts • main unit (top view) • tanshi board (top view).

  • Page 68

    12 - 4 • main unit (bottom view).

  • Page 69

    Asia icom inc. 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...

  • Page 70

    S-14104mz-c1 © 2004 icom inc. 1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan.