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Yamaha KB-180 Service Manual

Manual is about: DIGITAL KEYBOARD

Summary of KB-180

  • Page 1

    Service manual hamamatsu, japan copyright (c) yamaha corporation. All rights reserved. Pdf & ’08.03 specifications ......................................................................3 panel layout .........................................................................4 circuit board layout & wi...

  • Page 2: Warning

    Kb-180/skb-180 2 warning components having special characteristics are marked and must be replaced with parts having speci fi cation equal to those originally installed. Important notice this manual has been provided for the use of authorized yamaha retailers and their service personnel. It has been...

  • Page 3: Specifications

    3 kb-180/skb-180 specifications.

  • Page 4: Panel Layout

    Kb-180/skb-180 4 / 4 ) 0 2 * 6 1 • front panel a’ a panel layout.

  • Page 5

    5 kb-180/skb-180 'rand0no 'rand0no 2 * - • rear panel a’ a.

  • Page 6

    Kb-180/skb-180 6 circuit board layout & wiring 61h 61l • lower case assembly • upper case side • upper case side (pn 4/6) pb (amjk 6/6) (pn 3/6) pnl pnl (pn 2/6) pnr pnr dmlcd (amjk 1/6) (amjk 4/6) am am am (amjk 5/6) midi (amjk 2/6) speaker r upper case assembly back light assembly upper case assem...

  • Page 7

    7 kb-180/skb-180 no. Unit name location part no. Connector assembly destination remarks q lower case assembly 30 wc601200 mk3 61l-cn5 *1 *4 dmlcd-cn402 *1 *4 7p l=550 w 40 wg343000 mk2 61h-cn2 *1 *4 dmlcd-cn403 *1 *4 5p l=500 e 50 wc601000 mk1 61h-cn1 *1 *4 dmlcd-cn401 *1 *4 12p l=600 r 130 (v873560...

  • Page 8: Disassembly Procedure

    Kb-180/skb-180 8 battery cover assembly [320] [320] [330] [320] [320] speaker grille l speaker grille r volume knob push knob soldered soldered • lower case assembly bat connector assembly (red) bat connector assembly (black) hook (a) hook (a) spring terminal disassembly procedure caution: be sure t...

  • Page 9

    9 kb-180/skb-180 master volume knob am push knob am am (amjk 5/6) am (amjk 4/6) midi (amjk 1/6) (amjk 2/6) lcd unit [a] [a] [210c] [210b] [210b] upper case assembly [210b] [210e] [210e] [210d] [210a] [210f] [210g] 3. Am circuit board (time required: about 4 minutes) 3-1 remove the “master volume” kn...

  • Page 10

    Kb-180/skb-180 10 lcd panel nonwoven fabric cloth lcd back light assembly lcd holder rubber connector dmlcd [l100] conductor side rubber connector rubber connector 1 2 3 4 5 6 7 8 dmlcd [210h] [210h] [210n] pnr (pn 3/6) pnl (pn 2/6) pnr (pn 1/6) pnl (pn 4/6) pb (amjk 6/6) [210k] [210j] [210j] [210k]...

  • Page 11

    11 kb-180/skb-180 pb wheel assembly c6 c1 c2 c3 b2 b3 c4 c5 [200a] • lower case assembly speaker l speaker r keyboard assembly [200a] [200b] [200b] [200b] [200b] [200b] [200c] 8. Pnr circuit board (time required: about 6 minutes) 8-1 remove the lower case assembly. (see procedure 1.) 8-2 remove the ...

  • Page 12

    Kb-180/skb-180 12 • lower case assembly [190a] [180a] [180b] [180a] [180a] [180b] [190a] [190b] [190b] 61l 61h rubber contact rubber contact rubber contact hook rubber contact 12. Disassembling keyboard assembly (time required: about 3 minutes) 12-1 remove the lower case assembly. (see procedure 1.)...

  • Page 13

    13 kb-180/skb-180 10 11 12 2 4 5 6 7 8 1 1 2 3 5 9 6 7 8 61l 61h 3 4 c3 b2 c4 b3 c5 b4 [380] * when installing the circuit board 61h, tighten the screws 1 through 8 in numerical order as shown in the figure for circuit board “61h” in fig. 14. (fig. 14) * when the black keys from c#2 to a#2, from c#3...

  • Page 14: Lsi Pin Description

    Kb-180/skb-180 14 lsi pin description nt3881dfg-01 (x3148a00) lcd driver ..................................................................14 ml9040a-b01gaz03a (xz987a00) lcd driver......................................................14 adc084s021cimm (x6905a00) adc (analog to digital converter) .....

  • Page 15

    15 kb-180/skb-180 pin no. I/o function name pin no. I/o function name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 vss testn pllbpn pllv dd cin pllvss trstn tms t...

  • Page 16: Ic Block Diagram

    Kb-180/skb-180 16 ic block diagram ak43 8 5et (x6040a00) dac (digital to analog converter) dmlcd: ic501 pin no. Name i/o function 1 2 3 4 5 6 7 8 mclk bick sdti lrck pdn csn cclk cdti i i i i i i i i master clock audio serial data clock audio serial date input l/r clock power down mode chip select c...

  • Page 17: Circuit Boards

    17 kb-180/skb-180 circuit boards am (amjk 1/6) circuit board (x7176h0) ................................................ 24 am (amjk 4/6) circuit board (x7176h0) ................................................ 24 am (amjk 5/6) circuit board (x7176h0) ................................................ ...

  • Page 18

    Kb-180/skb-180 18 dmlcd circuit board component side to midi-cn853 to am (amjk 1/6)-cn155 to pnr (pn 1/6)-cn771 not installed not installed to pnl (pn 2/6)-cn774 to 61l-cn5 to 61h-cn1 to 61h-cn2 not installed dmlcd: 2na-wg23540-1 7.

  • Page 19

    19 kb-180/skb-180 pattern side dmlcd circuit board dmlcd: 2na-wg23540-1 7.

  • Page 20

    Kb-180/skb-180 20 to dmlcd-cn703 pitch bend portamento component side pnl (pn 2/6) circuit board pnl (pn 4/6) circuit board pb (amjk 6/6) circuit board component side component side pb: 2na-wg23590-1 5 pnl: 2na-wg23610-1 2.

  • Page 21

    21 kb-180/skb-180 pb: 2na-wg23590-1 5 pnl: 2na-wg23610-1 2 pnl (pn 2/6) circuit board pattern side pnl (pn 4/6) circuit board pattern side.

  • Page 22

    Kb-180/skb-180 22 to dmlcd-cn701 component side pnr (pn 1/6) circuit board scale: 90/100 pnr: 2na-wg23610-1 2 component side pnr (pn 3/6) circuit board.

  • Page 23

    23 kb-180/skb-180 pattern side pnr: 2na-wg23610-1 2 pnr (pn 1/6) circuit board scale: 90/100 pnr (pn 3/6) circuit board pattern side.

  • Page 24

    Kb-180/skb-180 24 to back light to dmlcd-cn101 not installed to battery to speaker l dc in 12v phones/ output expression master volume standby/on am (amjk 1/6) circuit board component side component side component side am (amjk 4/6) circuit board am (amjk 5/6) circuit board am: 2na-wg23590-1 5.

  • Page 25

    25 kb-180/skb-180 61h circuit board to dmlcd-cn401 to 61l-cn4 to dmlcd-cn403 a a’ a a’ component side b b’ to dmlcd-cn402 to 61h-cn3 b b’ 61l circuit board component side 61h: 2nakb-v869540 61l: 2nakb-v869520

  • Page 26: Test Program

    Kb-180/skb-180 26 test program 1 preparations 1) use an ac adaptor pa-5d. 2) measuring device: frequency counter, which can detect thousandth value or more, level meter (with jis-c fi lter), oscilloscope note: use a stereo plug and connect a load resistor of 33 Ω to the [phones/output] jack for meas...

  • Page 27: •

    27 kb-180/skb-180 test no lcd display test descriptions, judging conditions, etc. 20 sw chk 020 checks the switches and leds on the panel. Press the switches as shown in the lcd. When a switch is pressed, a sound is played at the prescribed pitch. (refer to the switch test item list on the next page...

  • Page 28

    Kb-180/skb-180 28 turn sw name lcd display note number 1 acmp vol 5 a-vol up c2 2 acmp vol 5 a-vol dw c#2 3 tempo 5 tempo up d2 4 tempo 5 tempo dw d#2 5 style a/b style ab e2 6 8beat 8beat f2 7 ballad ballad f#2 8 rock rock g2 9 disco disco g#2 10 dg wushi dg wushi a2 11 rumba rumba a#2 12 bossanva ...

  • Page 29: Initialization

    29 kb-180/skb-180 initialization ">d &lash.

  • Page 30: Midi Implementation Chart

    Kb-180/skb-180 30 midi implementation chart model version:1.0 transmitted recognized remarks function... Basic default 1 - 16 1 - 16 x x d e g n a h c l e n n a h c 3 3 t l u a f e d x x s e g a s s e m e d o m altered ************** x 7 2 1 - 0 7 2 1 - 0 e t o n number : true voice ************** 0...

  • Page 31: Midi Data Format

    31 kb-180/skb-180 midi data format.

  • Page 32: Parts List

    Warning components having special characteristics are marked and must be replaced with parts having speci fi cation equal to those originally installed. • the numbers “qty” show quantities for each unit. • the parts with “--” in “part no.” are not available as spare parts. • this mark “ } ” in the r...

  • Page 33: Overall Assembly

    2 kb-180/skb-180 overall assembly * * * * * * * music rest 330 310 320 340 340d 340a 340b 340f 340e 340e 340e 340c 340c 90 100 60 80 10 l10 l20 l30 l40 l70 l90 l110 l100 l80 70 250 180 160 190 260 210 270 210 210 270 270 270 270 370 110 200 210 210 210 380 370 370 270 210 140 130 280 210 210 210 210...

  • Page 34

    3 kb-180/skb-180 overall assembly 総 組 立 kb-180/skb-180 -- overall assembly 総 組 立 kb-180 (wn08930) -- overall assembly 総 組 立 skb-180 (wn08940) * 10 wn090200 upper case assembly 上 ケ ー ス Ａ ｓ ｓ ’ ｙ kb-180 * 10 wn090300 upper case assembly 上 ケ ー ス Ａ ｓ ｓ ’ ｙ skb-180 60 wf816000 panel switch 1 black x7 Ｐ Ｎ...

  • Page 35

    4 kb-180/skb-180 accessories 付 属 品 wg073800 music rest 譜 面 板 wf324900 ac adaptor pa-5d chn Ａ Ｃ ア ダ プ タ − 08 ref no. Part no. Description 部 品 名 remarks qty rank * : new parts rank: japan only.

  • Page 36: Keyboard Assembly

    5 kb-180/skb-180 keyboard assembly 200 200 200 10 180 180 151 152 175 155 190 160 190 20 170 20 10 60 50 50 40 40 30 keyboard assembly １ ６ Ｎ − Ｃ ６ １ 鍵 盤 kb-180/skb-180 v 8 6 9 5 7 0 0 keyboard assembly 16n c61 １ ６ Ｎ − Ｃ ６ １ 鍵 盤 10 v 3 4 1 2 6 0 0 white key 16n cegb 白 鍵 Ｃ Ｅ Ｇ Ｂ 5 10 wb125200 white ke...

  • Page 37: Lower Case Assembly

    6 kb-180/skb-180 lower case assembly 50 30 40 80 90 100 190 170 200 200 210 220 60 60 170 170 180 200 200 210 220 110 130 170 170 120 120 10 20 l60 l30 l20 l30 l20 l30 l20 l70 l60 l10 l40 keyboard assembly: see page 5. Speaker box r assembly speaker box l assembly lower case sub assembly 230 170 170...

  • Page 38

    7 kb-180/skb-180 lower case assembly 下 ケ ー ス Ａ ｓ ｓ ’ ｙ kb-180/skb180 -- lower case assembly 下 ケ ー ス Ａ ｓ ｓ ’ ｙ (wg07410) 10 wg074000 lower case sub assembly 下 ケ ー ス サ ブ Ａ ｓ ｓ ’ ｙ 10 20 v 8 6 9 5 7 0 0 keyboard assembly 16n c61 １ ６ Ｎ − Ｃ ６ １ 鍵 盤 30 wc601200 connector assembly mk3 7p l=550 Ｍ Ｋ ３ 束 線 40...

  • Page 39: Electrical Parts

    8 kb-180/skb-180 electrical parts am/midi/pb electrical parts 電 気 部 品 kb-180/skb-180 * wm930000 circuit board am (amjk 1,4,5/6) Ａ Ｍ シ ー ト (wm92990)(x7176h0) * wm930100 circuit board midi (amjk 2/6) Ｍ Ｉ Ｄ Ｉ シ ー ト (wm92990)(x7176h0) * wm930200 circuit board pb (amjk 6/6) Ｐ Ｂ シ ー ト (wm92990)(x7176h0) *...

  • Page 40

    9 kb-180/skb-180 cn155 vy669000 cable holder 51048 13p te ケ ー ブ ル ホ ル ダ ー 天 津 cn551 v i 8 7 8 3 0 0 cable holder 51048 5p te ケ ー ブ ル ホ ル ダ ー 01 cn551 v z 3 4 1 7 0 0 cable holder 51048 5p te ケ ー ブ ル ホ ル ダ ー 天 津 cn552 v i 8 7 8 3 0 0 cable holder 51048 5p te ケ ー ブ ル ホ ル ダ ー 01 cn552 v z 3 4 1 7 0 0 c...

  • Page 41

    10 kb-180/skb-180 am/midi/pb and dmlcd r563 v 2 5 4 8 6 0 0 carbon resistor 330.0 1/6j 26tp カ ー ボ ン 抵 抗 r564 hf456100 carbon resistor 1.0k 1/4 j ax tp カ ー ボ ン 抵 抗 01 r564 v 2 5 4 9 2 0 0 carbon resistor 1.0k 1/6 j 26tp カ ー ボ ン 抵 抗 r565 hf456100 carbon resistor 1.0k 1/4 j ax tp カ ー ボ ン 抵 抗 01 r565 v ...

  • Page 42

    11 kb-180/skb-180 dmlcd c401 us145100 ceramic capacitor-f (chip) 0.1000 25v z rect. チ ッ プ セ ラ（ Ｆ ） 01 c402 us145100 ceramic capacitor-f (chip) 0.1000 25v z rect. チ ッ プ セ ラ（ Ｆ ） 01 c403 us061470 ceramic capacitor-ch(chip) 47p 50v j rect. チ ッ プ セ ラ（ Ｃ Ｈ ） 01 -416 us061470 ceramic capacitor-ch(chip) 47...

  • Page 43

    12 kb-180/skb-180 dmlcd and pnl/pnr r305 rd355470 carbon resistor (chip) 470.0 63m j rect. チ ッ プ 抵 抗 01 r306 rd357100 carbon resistor (chip) 10.0k 63m j rect. チ ッ プ 抵 抗 01 r307 rd357470 carbon resistor (chip) 47.0k 63m j rect. チ ッ プ 抵 抗 01 r308 rd358100 carbon resistor (chip) 100.0k 63m j rect. チ ッ ...

  • Page 44

    13 kb-180/skb-180 pnl/pnr and 61h and 61l cn774 v i 8 7 9 4 0 0 cable holder 51048 16p te ケ ー ブ ル ホ ル ダ ー 01 cn774 vy669100 cable holder 51048 16p te ケ ー ブ ル ホ ル ダ ー 天 津 cn775 v i 8 7 8 4 0 0 cable holder 51048 6p te ケ ー ブ ル ホ ル ダ ー 01 cn775 vy668500 cable holder 51048 6p te ケ ー ブ ル ホ ル ダ ー 天 津 01 c...

  • Page 45

    1 2 3 4 5 6 h g f e d c b a kb-180/skb-180 kb-180/skb-180 block diagram kb-180/skb-180 block diagram 28ca1-2001002836 1 r+ r+ l+ r+ r+ r+ r- r- l- r- l+ l+ a5k Ω +v pb0-pb7 pa4,pa6,pa7,pc6 pa4 power amp. 6w + 6w btl la4625 led i/f rxd0 txd0 pc7 led pa6 pa6 pb0-pb5 pb0-pb5 pa6 pb6 ain4 ain1 ain1 ain1...

  • Page 46

    12 11 10 9 8 7 6 5 4 3 2 1 a b c d e f g h i j k l m n o p q 12 11 10 9 8 7 6 5 4 3 2 1 a b c d e f g h i j k l m n o p q kb-180/skb-180 kb-180/skb-180 kb-180/skb-180 kb-180/skb-180 overall circuit diagram (am, midi, pb, dmlcd, pnl, pnr, 61h, 61l) : not installed : mylar capacitor : ceramic capacito...