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Yamaha KMA-1080 Service Manual

Other manuals for KMA-1080: Owner's Manual
Manual is about: DIGITAL KARAOKE MIXING AMPLIFIER

Summary of KMA-1080

  • Page 1

    This manual has been provided for the use of authorized yamaha retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifi cally yamaha products, are already known and understood by the users, and have therefore not been restate...

  • Page 2

    2 kma-1080/kma-980 kma-1080/kma-980 to service personnel ■ 1. Critical components information components having special characteristics are marked z and must be replaced with parts having specifi cations equal to those originally installed. 2. Leakage current measurement (for 120v models only) when ...

  • Page 3

    3 kma-1080/kma-980 kma-1080/kma-980 impedance selector ■ front panels ■ ▼ kma-1080 ▼ kma-980 impedance selector warning: do not change impedance selector setting while the power to this unit is on, otherwise this unit may be damaged. Kma-1080 model.

  • Page 4

    4 kma-1080/kma-980 kma-1080/kma-980 rear panels ■ ▼ kma-1080 ▼ kma-980

  • Page 5

    5 kma-1080/kma-980 kma-1080/kma-980 remote control panel ■ specifications ■ amplifier section minimum rms output power l/r (1 khz, 1% thd, 8-ohms) kma-1080 160 w + 160 w kma-980 120 w + 120 w maximum useful output power (jeita) l/r (1 khz, 10% thd, 8-ohms) kma-1080 200 w + 200 w kma-980 150 w + 150 ...

  • Page 6

    6 kma-1080/kma-980 kma-1080/kma-980 435 (17-1/8˝) 18 (5/8˝) 132 (5 -1/ 4 ˝) 150 (5 -7/ 8˝ ) 376 (14- 3 /4 ˝) 43 0 (16- 7/ 8˝ ) 40 (1-5/8˝) 14 (1/2˝) dimensions unit : mm (inch) internal view ■ q main (5) p.C.B. W main (3) p.C.B. (kma-1080) main (4) p.C.B. (kma-980) e operation (1) p.C.B. R dsp (2) p...

  • Page 7

    7 kma-1080/kma-980 kma-1080/kma-980 disassembly procedures ■ (remove parts in the order as numbered.) 1. Removal of top cover a. Remove 8 screws ( q ) and 2 screws ( w ). (fig. 1) b. Slide the top cover rearward to remove it. (fig. 1) 2. Removal of front panel unit a. Remove 5 screws ( e ) and 4 scr...

  • Page 8

    8 kma-1080/kma-980 kma-1080/kma-980 indication of protection information ■ if any of indicators shown below fl ashes after turning on the power to this unit, it means that the protection func- tion is at work and normal operation is not available. ● details of protection information a. Dc protection...

  • Page 9

    9 kma-1080/kma-980 kma-1080/kma-980 this unit has self-diagnostic functions that are intended for inspection, measurement and location of faulty point. There are 12 main menu items, each of which has sub-menu items. Listed in the table below are main menu items and sub-menu items. Self-diagnostic fu...

  • Page 10

    10 kma-1080/kma-980 kma-1080/kma-980 ● starting self-diagnostic function while pressing the input key of this unit, press the power switch to turn on the power. “input” key “power” switch ● canceling self-diagnostic function press the power switch of this unit to turn off the power. ● operation proc...

  • Page 11

    11 kma-1080/kma-980 kma-1080/kma-980 ● details of self-diagnostic function menu 1. Firmware version the fi rmware version is indicated. A. Main microprocessor firmware version b. Dsp microprocessor firmware version 2. Temperature of heatsink the temperature of heatsink is indicated. A. Monitor: curr...

  • Page 12

    12 kma-1080/kma-980 kma-1080/kma-980 6. Checksum the checksum value is indicated in the decimal number. A. Upper bit b. Lower bit gm_l gm_r gv dsp6 lr lr lr l dsp through sw music d-vol music d-vol music sw mic mic dry a/d a/d d/a d/a misic mic analog check dsp music check dsp mic check menu key con...

  • Page 13

    13 kma-1080/kma-980 kma-1080/kma-980 10. Indicator check this menu is used to check the indicators. A. All light up b. All off c. Automatic sequential lighting 11. Input mode both auto and manual of input mode are activated..

  • Page 14

    14 kma-1080/kma-980 kma-1080/kma-980 confirmation of idling current of amp unit ■ r429 (l ch) r430 (r ch) tp413–tp415 (l ch) tp414–tp416 (r ch) open (cut off) 20 mv – 350mv (dc) r429 r430 tp416 tp414 tp415 tp413 rear side front side item condition test point rating remark idling current no input sig...

  • Page 15

    15 kma-1080/kma-980 pin no. Port name function name i/o detail of function default 1 p3̲3/ssi sdata o for device, commonly used data low 2 p3̲4/sda/scs fstl o led/key pt6313 / njm7318 stb high 3 mode mode 4 p4̲3/xcin ssdata o led/key pt6313 / njm7318 data low 5 p4̲4/xcout ssclk o led/key pt6313 / nj...

  • Page 16

    16 kma-1080/kma-980 no. Pin name function name type i/o description of function hardware terminal treatment software terminal treatment remarks 1 md2 md2 io i setting of mcu operation mode h - mode 7 2 vcc vcc vcc 3 pc0/a0 a0 io o bus a0 gnd l free ２ 4 pc1/a1 a1 a1 o dsp6 interface adress - - 5 pc2/...

  • Page 17

    17 kma-1080/kma-980 ic17: yss910c-vz (dsp p.C.B.) dsp6 (digital signal processor) * no replacement part available. 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 88 87 86 ...

  • Page 18

    A b c d e f g h 1 2 3 4 5 6 18 kma-1080/kma-980 block diagram ■ kma-1080 model: operation s3eepage ¾ 3#(%-!4)#$)!'2!- operation main function s3eepage 3#(%-!4)#$)!'2!- s3eepage 3#(%-!4)#$)!'2!- s3eepage ¾ 3#(%-!4)#$)!'2!- dsp s3eepage ¾ 3#(%-!4)#$)!'2!- -)#&rontpanel -)#&rontpanel "!,!.#%$-)#).0542e...

  • Page 19

    19 kma-1080/kma-980 pin connection diagrams ■ b e c 2 1 1: gnd 2: in 3: out 3 c e b c b b c e e c b b e c e 3: base 2: collector 1: emitter 1 2 3 1 2 3 1: gnd/emitter 2: out/collector 3: in/base e c b b c e std04p 1 2 3 4 5 std04n 1 2 3 4 5 1 4 3 5 1 5 2 3 2n5401c-at 2n5551c-at 2sc1815-y 2sa970-gr 2...

  • Page 20

    A b c d e f g h 1 2 3 4 5 6 20 kma-1080/kma-980 ic17 ic11 ic6 ic7 ic3 w1b ic9 ic8 cb2 cb1 cb5 cb3 ic2 ic10 ic19 ic20 ic14 ic16 ic15 ic5 ic4 ic13 ic12 dgnd hr_ctrl1 hr_ctrl2 d out_mic l -12v a d out_mic r a gnd d out_music r +12v a d out_music l a gnd d in_music l a gnd d in_music r a gnd d_mic in h8...

  • Page 21

    A b c d e f g h 1 2 3 4 5 6 21 kma-1080/kma-980 ic1 1 8 9 16 dsp (1) (side b) dsp (2) (side b) ref. No. Location d1 f3 d2 f3 d3 d3 d5 d4 d7 d3 d9 d2 d11 d4 d13 d4 ic1 f3 q1 f3 ● semiconductor location.

  • Page 22

    A b c d e f g h 1 2 3 4 5 6 22 kma-1080/kma-980 function (1) (side a) ref. No. Location d8 d5 d12 d5 d15 f4 d16 g4 d17 e4 d18 e4 d801 d5 d802 d5 d803 d4 d804 d4 d805 f5 d806 f5 d807 c3 ic1 c5 ic2 c4 ic3 c2 ic4 c4 ic5 d5 ic6 d5 ic7 d5 ic8 e4 ic9 e4 ic10 d4 ic11 d4 ic14 c2 ic15 f5 ic16 g4 ic17 e4 ic18...

  • Page 23

    A b c d e f g h 1 2 3 4 5 6 23 kma-1080/kma-980 function (1) (side b) ref. No. Location q11 c1 ● semiconductor location.

  • Page 24

    A b c d e f g h 1 2 3 4 5 6 24 kma-1080/kma-980 cb304 w303 w302 ic300 ic301 ic303 ic307 ic305 dgnd v ol_repea t v ol_bal -12v a ag +12v a ag ag ag ag ag ag gnd_rm +5vd v ol_dela y mic2_out mic1_out mus_r out mus_lout music_rin music_lin mic_echo_r mic_echo_l mic_mix_a rm2 rm1 function (1) (cb2) musi...

  • Page 25

    A b c d e f g h 1 2 3 4 5 6 25 kma-1080/kma-980 operation (1) (side a) operation (1) (side b) ref. No. Location d235 e5 d236 e5 d248 d3 d249 c3 d250 g5 d251 f5 ic235 e5 ic236 e5 ic237 e5 ic238 d5 ic239 d5 ic240 e4 ic241 f5 q243 c5 q725 c5 q726 c5 ● semiconductor location cb237 cb238 w201 w201 w201 w...

  • Page 26

    A b c d e f g h 1 2 3 4 5 6 26 kma-1080/kma-980 operation (2) (side a) operation (2) (side b) cb707 cb706 function (1) (cb15) +8d gnd +5d ssdata fstl keyc_a dgnd mus_rb mic_rb echo_rb +8d gnd ssclk key_in rem keyc_b mus_ra mic_ra echo_ra rv-led-out rkey-out rv-led-g rv-led-r kma-1080: operation (5) ...

  • Page 27

    A b c d e f g h 1 2 3 4 5 6 27 kma-1080/kma-980 operation (7) (side a) operation (4) (side b) operation (4) (side a) operation (5) (side a) cb562 main (1) (cb409) (power) cb901 function (2) (w303) mic3 ag mic2 ag ag _ mic1 ag mic 3 mic 2 mic 1 kma-1080 only kma-1080 only kma-1080 only w701 r v -led-...

  • Page 28

    A b c d e f g h 1 2 3 4 5 6 28 kma-1080/kma-980 ● semiconductor location main (1) (side a) point y ch 1 : emitter of q433 ch 2 : collector of q431 ↑ power cable on ↑ power cable on ↑ power cable off cb403 w403a w404a w402a w401a cb412 w405a w406a cb410 cb409 cb408 cb411 cb401 cb402 ic402 ic401 dgnd ...

  • Page 29

    A b c d e 1 2 3 4 5 6 7 kma-1080/kma-980 29 main (2) (side a) ref. No. Location d551 b3 d552 b4 d553 b3 d554 b4 d555 b3 d556 b3 d557 b4 ic551 b4 ic552 b3 ic553 b3 ● semiconductor location main (5) (side a) w405b w406b main (1) (w405a, w406a) br gy ac outlets w552 w551 ic551 ic552 ic553 main (1) (cb4...

  • Page 30

    A b c d e 1 2 3 4 5 6 7 kma-1080/kma-980 30 main (3) (side a) w404b w402b w401b w403b re wh bl bl main (1) (w404a, w403a, w402a, w401a) speakers r a l b ● kma-1080 main (4) (side a) w404b w402b w401b w403b re wh bl bl main (1) (w404a, w403a, w402a, w401a) speakers r l ● kma-980

  • Page 31

    A b c d e f g h 1 2 3 4 5 6 i j k l m n 7 8 9 10 31 kma-1080/kma-980 schematic diagrams ■ music in (l ch) mic in mic out (l ch) music out (l ch) mic da mic ad music ad music da mic in music in (l ch) music out (l ch) mic out (l ch) 4.1 5.0 5.0 5.0 5.0 5.0 4.7 4.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...

  • Page 32

    A b c d e f g h 1 2 3 4 5 6 i j k l m n o 7 8 9 10 32 kma-1080/kma-980 * all voltages are measured with a 10m Ω /v dc electronic volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. * schematic...

  • Page 33

    A b c d e f g h 1 2 3 4 5 6 i j k l m n 7 8 9 10 33 kma-1080/kma-980 function 2/2 * all voltages are measured with a 10m Ω /v dc electronic volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. ...

  • Page 34

    A b c d e f g h 1 2 3 4 5 6 i j k l m n o 7 8 9 10 34 kma-1080/kma-980 * all voltages are measured with a 10m Ω /v dc electronic volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. * schematic...

  • Page 35

    A b c d e f g h 1 2 3 4 5 6 i j k l m n 7 8 9 10 35 kma-1080/kma-980 * all voltages are measured with a 10m Ω /v dc electronic volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. * schematic d...

  • Page 36

    A b c d e f g h 1 2 3 4 5 6 i j k l m n o 7 8 9 10 36 kma-1080/kma-980 * all voltages are measured with a 10m Ω /v dc electronic volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. * schematic...

  • Page 37

    A b c d e f g h 1 2 3 4 5 6 i j k l m n 7 8 9 10 37 kma-1080/kma-980 * all voltages are measured with a 10m Ω /v dc electronic volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. * schematic d...

  • Page 38

    39 kma-1080/kma-980 kma-1080/kma-980 ● electrical component parts warning ● components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. Replacement parts list ■ abbreviations in this list are as follows : c.A.El.Ch...

  • Page 39

    40 kma-1080/kma-980 kma-1080/kma-980 * wu078300 p.C.B. Dsp cb1 vb858900 cn.Bs.Pin 10p cb2 vq961200 cn.Bs.Pin 9p cb3 vq961600 cn 13p cb5 vb389600 cn.Bs.Pin 11p c1-3 us062470 c.Ce.Chp 470pf 50v b c5 us062470 c.Ce.Chp 470pf 50v b c8-9 us062470 c.Ce.Chp 470pf 50v b c10 us135100 c.Ce.Chp 0.1uf 16v c11-12...

  • Page 40

    41 kma-1080/kma-980 kma-1080/kma-980 * wu077800 p.C.B. Function kma-1080 * wu077900 p.C.B. Function kma-980 cb2 vn520900 cn.Bs.Pin 52045 26p te cb3-4 lb918020 cn.Bs.Pin 2p cb12 vq963000 cn.Bs.Pin 9p cb15 vq047400 cn.Bs.Pin 19p cb17 vb390100 cn.Bs.Pin 5p cb19 vq963400 cn.Bs.Pin 13p cb21 vm859700 cn.B...

  • Page 41

    42 kma-1080/kma-980 kma-1080/kma-980 d8 vt332900 diode 1ss355 d12 vv657700 diode.Zenr rlz4.7a 4.7v d15-16 vu992200 diode.Zenr maz8047gml 4.7v d17-18 vt332900 diode 1ss355 d801 vt332900 diode 1ss355 kma-1080 d802 vv657700 diode.Zenr rlz4.7a 4.7v kma-1080 d803 vt332900 diode 1ss355 d804 vv657700 diode...

  • Page 42

    43 kma-1080/kma-980 kma-1080/kma-980 d395-397 vd303900 di0d.Array 1ss226 te85r kma-1080 * d701-709 wt666800 led red/green d710-717 wp354200 led green * d718-719 wt666800 led red/green d720-757 wp354200 led green d758 wp484900 led amber kma-1080 d759-760 vt332900 diode 1ss355 d762-764 wp484900 led am...

  • Page 43

    44 kma-1080/kma-980 kma-1080/kma-980 p.C.B. Main ref no. Part no. Description markets * new parts ( 新規部品 ) ref no. Part no. Description markets * new parts ( 新規部品 ) c564-565 wj605000 c.Mylar 0.01uf 50v j kma-1080 c566 wj604500 c.Mylar 4700pf 50v kma-1080 c571-572 wj604500 c.Mylar 4700pf 50v mka-980 ...

  • Page 44

    45 kma-1080/kma-980 1/6w type part no. Hf45 7100 hf45 7110 hf85 7120 hf45 7130 hf45 7150 hf45 7180 hf45 7220 hf45 7240 hf85 7270 hf45 7300 hf45 7330 hf45 7360 hf45 7390 hf45 7470 hf45 7510 hf45 7560 hf45 7620 hf45 7680 hf45 7820 hf45 7910 hf45 8100 hf45 8110 hf45 8120 hf45 8130 hf45 8150 hf45 8180 h...

  • Page 45

    A b c d e f g h 1 2 3 4 5 6 46 kma-1080/kma-980 ● overall ass’y 1-16 1-17 1-27 1-35 1-34 1-34 1-36 1-21 1-33 1-20 1-34 1-34 1-34 1-33 1-8 1-7 1-33 1-18 1-22 1-24 1-25 1-26 1-11 1-33 1-33 1-19 2-1 2-13 2-21 2-22 2-22 2-1 (5) 2-1 (3) 2-1 (4) (1) 2-15 2-23 1-23 30 29 51 51 5 (5) 5 (7) 5 (2) 5 52 52 52 ...

  • Page 46

    47 kma-1080/kma-980 ref no. Part no. Description remarks markets * new parts ( 新規部品 ) ref no. Part no. Description remarks markets * new parts ( 新規部品 ) 1-7 wr401600 flexible flat cable 26p 180mm p=1.25 1-8 wr394100 flexible flat cable 19p 250mm p=1.25 * 1-11 wu089100 front panel kma-1080 * 1-11 wu08...

  • Page 47

    A b c d e f g h 1 2 3 4 5 6 48 kma-1080/kma-980 ● schematic diagram ● key code ● key no. Layout remote control ■ ● panel k19 k16 k18 k22 k17 k15 k21 k20 k11 k23 k31 k9 k14 k32 k12 k13 k10 k28 k6 k26 k29 k27 k25 k24 k1 k8 k4 k5 k3 k2 k7 k30 r2 47-ohms r3 100-ohms r1 1-ohm q1 1 2 3 4 5 6 7 8 9 10 20 1...

  • Page 48

    49 kma-1080/kma-980 kma-1080/kma-980 ■ 嬢⫾㦅⹳ᶑ䗨區⊹ ⚌嬢⫾㦅⹳ᶑ⍓ṉ嬢⫾ṉᵯ區⊹濕 1. ⹤㚞 po 孧䒌 彭㉍㙤⍲嬔⼪ㅺ柨嬢濇⚌㚐㚞ㆷ⹤㕚孧䒌 njd 杗愳 0 fdip 愳 0nvtjd 杗愳 0fdip!Npef 嬢⫾Ɂ 㙤⍲嬔⼪ * 濕 孧䒌㚐㚞㙤⍲ᵤ㪅⃗救㕚䗨嬢⫾Ɂ 柨嬢濕 孧䒌ὁ⪼兗 qsftfu!2 䗨嬢⫾Ɂ 2. 廷⃉㦅⹳ ⭪廷⃉㦅⹳嬢⫾ᶞ兎∌ㅺㆯ∌Ɂ 兎∌ * 濕 兎∌嬢⫾廷⃉㷴Ɂ ㆯ∌濕 彾弫 joqvu 彭㉍廷⃉㷴Ɂ ㉭䃋 eweɀbvy ** ɀubqfɀchn 柞ⷳ彭㉍㛉㷴Ɂ 3. 兎∌廷⃉㛅Ṛ 嬢⫾㫉樈 3 ㆤ彔䗨兎∌廷⃉...

  • Page 49

    50 kma-1080/kma-980 kma-1080/kma-980 嬢⫾㦅⹳ 2. 廷⃉㦅⹳ 3. 兎∌廷⃉㛅Ṛ 4. Fdip!Npef 兎∌愱嬢 5. 忉㌋㦅⹳ 6. Njd0nvtjd 㙤⢋䒙⷗ 7. Njd0nvtjd 杗愳彭㉍ 8. ⡺恌廷⅞彭㉍ 9. ∃䋫㒢⢋◌㦅⹳ 10. ↁ⤯≺ 區⊹ lfz!Dpouspm 柝䙒 0nvtjd ,3 兎∌濕2 ㆯ∌濕3 ,4 杗柵濕2 太柵濕3 杗柵 0 太柵濕4 ợ䒌 joqvu 彭㉍ し壥㛉㷴Ɂ ữ⣦濕ewe ,5 ⃗救濕2 ㆷ⹤濕3 ,6 ↱曆㛣⏰⡺恌濕2 ↱曆㛣濕3 ⡺恌濕4 䣥䒌濕5 .2 㕄嬢⫾濕21 嬢⫾兗㉫䢞杗愳濕:.4 ...

  • Page 50

    51 kma-1080/kma-980 kma-1080/kma-980 • 彾⶜ợ䒌㕚濇∃䋫㒢⢋◌㦅⹳ⷸ⤯丬ợ䒌渼嬈嬢⫾Ɂ • ⣦㜀嬢⫾ᷪĥ∃䋫㒢⢋◌濕3Ħ濇㚐㚞䗨杗愳䒙⷗⭪弢↔㙤⢋濇ᵸ㕄㰹彾弫廐∌↱曆㛣ᵮ䗨 nvtjd ⭝⃚弿垰 ㌋↚Ɂ • 孛㱌びᵱ壥䓳⽡㫈嬢⫾濇ṉ₱径ㅴ弫⢋䗨杗愳廷⅞Ɂ • ⺷ṉ∃䋫㒢⢋◌㦅⹳ợ䒌㚐㚞㕚孛␌孆丳摤⒪Ɂ 嫊⎮.

  • Page 51: Kma-1080/kma-980

    Kma-1080/kma-980 kma-1080/kma-980