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Yamaha EMX 660 Service Manual

Other manuals for EMX 660: Owner's Manual

Summary of EMX 660

  • Page 1

    1 emx660 service manual pa 011519 20000608-74800 1.45k-479 printed in japan 2000.06 hamamatsu, japan contents specifications ................................................ 3/5 dimensions ............................................................ 6 panel layout ......................................

  • Page 2: Warning

    Emx660 2 2 impor tant notice 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 specifically yamaha products, are already known and under- stood by the users, and h...

  • Page 3: Specifications

    3 emx660 specifications general specifications • 0 db=0.775 vrms maximum output power 300 w + 300 w/4ohms @0.5% thd at 1 khz (power amp out 1, 2) 215 w + 215 w/8ohms @0.5% thd at 1 khz (power amp out 1, 2) 600 w/8ohms @0.5% thd at 1 khz (bridge) frequency response 20 hz~20 khz +1 db, –3 db @1 w outp...

  • Page 4

    Emx660 4 input specifications output specifications • all output jacks are unbalanced. • 0 db=0.775 vrms, 0 dbv=1 vrms. For european model purchaser/user information specified in en55103-1 and en55103-2. Inrush current: 56a conformed environment: e1, e2, e3 and e4 input connectors pad actual load im...

  • Page 5

    5 emx660

  • Page 6: Dimensions

    Emx660 6 h:275 d:275 259 w:497 487 45.5 380 45.5 16 (45.5) (45.5) 168 (67.5) 150 57.5 dimensions units: mm.

  • Page 7: Panel Layout

    7 emx660 1 2 3 4 5 equalizer controls (high, mid, low) monitor controls (moni) effect control (effect) level control (level) pad switch (pad) (channel 1-4 only) control panel panel layout pad high mid low moni effect level 1 1 –15 +15 –15 +15 –15 +15 0 10 0 10 0 10 1 2 3 4 5 channel section digital ...

  • Page 8

    Emx660 8 13 14 15 16 17 18 graphic equalizer effect rtn control aux in control tape in master control peak level indicator main master tape in aux in effect rtn +6 +3 0 –5 –10 +12 • 6 • 0 • 6 • –12 +12 • 6 • 0 • 6 • –12 125 250 500 1k 2k 4k 8k 0 10 0 10 0 10 0 10 13 18 17 16 15 14 power amp 1 2 limi...

  • Page 9

    9 emx660 1 2 3 4 5 6 hi-z, lo-z input jacks mic, line, inst input jacks effect output jack (effect out) foot switch jack (foot sw) external input jacks (aux in/tape in) external output jacks (rec out/moni-tor/main) rear panel input/output panel input output monitor main aux in rec out tape in effect...

  • Page 10: Block & Level Diagram

    Emx660 10 block & level diagram 2 1 3 4 ic703 ic703 ic601 ic603 ic603 1 4 4 3 1 2 3 1 2 2 4 3 1 2 3 5 3 2 3 ic902 ic706 3 57 5 7 1 1 7 ic601 8 ic501 12 1 2 4 3 1 2 4 3 1 3 3 1 2 3 2 4 3 2 1 7 5 ic501 ic301 ( ch3 , 4 ) ic101 ( ch1 , 2 ) 7 5 1 ic901 31 ic901 7 6 7 ic704 5 7 ic705 2 4 3 1 ic801 2 4 3 1...

  • Page 11: Circuit Board Layout

    11 emx660 circuit board layout transformer power pwr 1/3 pwr 1/3 pwr 2/3 mix mix sub.

  • Page 12: Disassembly Procedure

    Emx660 12 disassembly procedure fig.1 power power transformer transformer power transformer [50] [p130] [p130] [p130] [p40] [p130] [p110] [p110] [p110] [p40] [30] [p90] [p90] hexagonal nut [p90] [30] [70] [70] [r180] [r180] mix sub 2 sub circuit board 2-1 remove the panel assembly. (see procedure 1....

  • Page 13

    13 emx660 fig.2 3 pwr 1/3 circuit board 3-1 remove the panel assembly. (see procedure 1.) 3-2 remove the two (2) connectors from the power transformer and the six (6) screws marked [70]. The rear assembly can then be removed. (fig. 1) 3-3 remove the six (6) screws marked [r180]. The power unit can t...

  • Page 14

    Emx660 14 fig.3 [r210] [r120] motor motor fan fan hexagonal nut [r120] [r150] motor fan [r140] [r150a] [r150] power unit pwr 3/3 pwr 2/3 7 power transformer 7-1 remove the panel assembly. (see procedure 1.) 7-2 remove the rear assembly. (see procedure 3.) 7-3 remove the four (4) screws marked [50]. ...

  • Page 15: Lsi Pin Description

    15 emx660 lsi pin description 1 ed2 i/o 51 hx/sda i/o/z host interface data output/i2c bus data 2 ed3 i/o external memory and i/o data bus 52 /empty o/z cmem update buffer and hr resistor empty flag output 3 ed4 i/o 53 axlr2 i audio data transmitt unit 2/3 left and right channel frame frequency sign...

  • Page 16

    Emx660 16 1 vinl i adc analog input, l ch 15 voutl o dac analog output, l ch 2 vcc1 - adc analog power supply 16 lrcin i sampling clock input (fs) 3 agnd1 - adc analog ground 17 bckin i bit clock input 4 vrefl - adc reference decuple, l ch 18 din i audio data input 5 vrefr - adc reference decuple, r...

  • Page 17: Ic Block Diagram

    17 emx660 ic block diagram njm2068l-d(xm356a00) njm4558l-d(xq212a00) n5238ap(xm085a00) mix: ic101, ic102, ic301, ic302, ic501, ic502, ic601, ic603, ic703, ic704, ic705, ic706, ic901 sub: ic101, ic201, ic304 op amp m5229p(xg203a00) mix: ic701, ic801 7seg grafic tc74hcu04ap(ig142200) sub: ic302 invert...

  • Page 18: Inspections

    Emx660 18 inspections 1. Measuring instruments low frequency oscillator: balance output, output impedance = 150 ohms oscilloscope: input impedance 100 kohms level meter: input impedance 100 kohms note: use a balance input measuring instrument : signal level 0 dbs = 0.775v 2. Mixer part 2-1 setting c...

  • Page 19

    19 emx660 2-4 gain each output gain should be as shown in the table below. 2-5 frequency response when the input signal frequency is set to 20 hz and 20 khz in tables 1, each output terminal level should fall within the range of +1 and -3 db, using 1 khz as the reference. 2-6 equalizer characteristi...

  • Page 20

    Emx660 20 2-9 distortion set each volume control of the input section and master section to nominal in tables 1. When each output except the rec out level reaches +14 dbs, the distortion ratio should be less than 0.3 %. 2-10 maximum output level in the states of 2-9, the maximum output levels of mai...

  • Page 21

    21 emx660 3. Power amplifier part 3-1 setting conditions setting conditions are as follows unless otherwise specified. 3-2 power on muting the muting relay should be released 2.5 +/- 1 seconds after the power switch is turned on. 3-3 speaker terminal dc voltage when input terminals are grounded, con...

  • Page 22

    Emx660 22 3-9 protection apply a 10 hz sine wave signal to the input; increase the input signal so that the output signal is clipped. Confirm that the protection function operates and that the speaker relay does not open. When a 1 hz, 6 vp-p (8.7 dbs) sine wave signal is applied to the input, confir...

  • Page 23

    23 emx660

  • Page 24

    Emx660 24.

  • Page 25

    25 emx660

  • Page 26

    Emx660 26.

  • Page 27

    27 emx660

  • Page 28: Trouble Shooting

    Emx660 28 trouble shooting problem cause action sound is no longer out- put from the speakers. The power indicator is dark. The load on this device was too great, and the protection circuit for the inter- nal transformer has operated. Possi- ble reasons for the excessive load are an excessive input ...

  • Page 29: Parts List

    Warning components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. Notes : destination abbreviations the numbers “qty” show quantities for each unit. The parts with “--” in “part no.” are not available as spare parts...

  • Page 30: Overall Assembly

    Emx660 2 overall assembly 60 110 70 100 90 10 20 30 40 50 r90 r20 r80 r60 r140 r190 r90 r70 r50 r130 r150 r200 b10 b80 b40 b60 b50 b120 b100 b90 b110 b30 b70 b20 r150 r220 r230 r160 r170 r210 r110 r120 r100 r180 r10 r230 r220 r30 1/3 3/3 r90 r30 2/3 r30 r40 p100 p140 p110 p120 p20 p10 p180 p30 p40 p...

  • Page 31

    Emx660 3 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * * * * * * * * * * * overall assembly emx660 (v521540) overall assembly j (v521700) overall assembly u,v (v521720) overall assembly h,w (v521740) overall assembly b (v521760) overall assembly a (v521780) 10 bo...

  • Page 32

    Emx660 4 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * r30 circuit board pwr j r30 circuit board pwr u,v r30 circuit board pwr h,w,b,a r40 bind head screw sp 3.0x8 mfzn2y 6 01 r50 support h=7.4 b=5.5 6 01 r60 angle a (v521320) r70 angle b (v521330) r80 insulation...

  • Page 33: Electrical Parts

    Emx660 5 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * * * * * * electrical parts electrical parts emx660 circuit board mix (xy280a00) circuit board sub (xy281a00) circuit board pwr j (xy324a00) circuit board pwr u,v (xy324a00) circuit board pwr h,w,b,a (xy324a00...

  • Page 34

    Emx660 6 : new parts ref no. Part no. Description remarks qty rank rank: japan only c322 ceramic capacitor-f 0.01 50v z 01 -325 ceramic capacitor-f 0.01 50v z 01 c326 ceramic cap.-b 1000p 50v k 01 c401 electrolytic cap. 47.00 63.0v c402 electrolytic cap.-llm 10.00 50.0v 01 c403 electrolytic cap.-llm...

  • Page 35

    Emx660 7 : new parts ref no. Part no. Description remarks qty rank rank: japan only c634 ceramic capacitor-sl 47p 50v j 01 c635 ceramic capacitor-sl 100p 50v j 01 c636 ceramic capacitor-sl 100p 50v j 01 c637 ceramic capacitor-sl 22p 50v j 01 c638 ceramic capacitor-sl 22p 50v j 01 c639 electrolytic c...

  • Page 36

    Emx660 8 : new parts ref no. Part no. Description remarks qty rank rank: japan only c827 mylar capacitor 2200p 50v j 01 c828 mylar capacitor 0.012 50v j c829 mylar capacitor 1200p 50v j 01 c830 ceramic capacitor-f 0.01 50v z 01 c831 ceramic capacitor-f 0.01 50v z 01 c832 ceramic cap.-b 470p 50v k 01...

  • Page 37

    Emx660 9 : new parts ref no. Part no. Description remarks qty rank rank: japan only -803 led lt331-41-c13 (ye) 01 ld804 led lt321-41-c13 (gr) monitor(-5) 01 ld805 led lt321-41-c13 (gr) monitor(-10) 01 ld901 led lt321-41-c13 (gr) d.Effect(vo.Echo1,2, 01 -908 led lt321-41-c13 (gr) vo.Rev1,2, hall1,2, ...

  • Page 38

    Emx660 10 : new parts ref no. Part no. Description remarks qty rank rank: japan only r214 metal film resistor 8.2k 1/4 f 01 r215 metal film resistor 8.2k 1/4 f 01 r216 metal film resistor 2.2k 1/4 f 01 r217 metal film resistor 2.2k 1/4 f 01 r218 metal film resistor 10k 1/4 f 01 r219 metal film resis...

  • Page 39

    Emx660 11 : new parts ref no. Part no. Description remarks qty rank rank: japan only r416 metal film resistor 2.2k 1/4 f 01 r417 metal film resistor 2.2k 1/4 f 01 r418 metal film resistor 10k 1/4 f 01 r419 metal film resistor 10k 1/4 f 01 r420 carbon resistor 10.0k 1/4 j 01 r421 carbon resistor 10.0...

  • Page 40

    Emx660 12 : new parts ref no. Part no. Description remarks qty rank rank: japan only r618 metal film resistor 10k 1/4 f 01 r619 metal film resistor 10k 1/4 f 01 r620 carbon resistor 10.0k 1/4 j 01 r621 carbon resistor 10.0k 1/4 j 01 r622 carbon resistor 1.2k 1/4 j 01 r623 carbon resistor 1.2k 1/4 j ...

  • Page 41

    Emx660 13 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * r828 carbon resistor 4.7k 1/4 j 01 r829 carbon resistor 750.0 1/4 j 01 r830 carbon resistor 10.0k 1/4 j 01 r831 carbon resistor 680.0 1/4 j 01 -833 carbon ...

  • Page 42

    Emx660 14 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * circuit board sub (xy281a00) jumper wire 0.6 01 c101 ceramic capacitor-sl 100p 50v j 01 c102 ceramic capacitor-sl 56p 50v j 01 c103 electrolytic cap. 100.00 16.0v 01 c104 ceramic cap.-b 1000p 50v k 01 c105 ceram...

  • Page 43

    Emx660 15 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * d101 diode 1ss133,176,hss104 01 -103 diode 1ss133,176,hss104 01 d201 diode 1ss133,176,hss104 01 -203 diode 1ss133,176,hss104 01 d301 diode 1ss133,176,hss104 01 em301 ferrite bead bl02rn2-r62t4 02 em302 ferri...

  • Page 44

    Emx660 16 : new parts ref no. Part no. Description remarks qty rank rank: japan only r116 carbon resistor 2.2k 1/4 j 01 r117 carbon resistor 2.2k 1/4 j 01 r118 carbon resistor 47.0k 1/4 j 01 r119 carbon resistor 330.0 1/4 j 01 r120 carbon resistor 390.0k 1/4 j 01 r121 carbon resistor 390.0k 1/4 j 01...

  • Page 45

    Emx660 17 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * r344 carbon resistor 27.0k 1/4 j 01 r345 carbon resistor 3.0k 1/4 j 01 r346 carbon resistor 30.0k 1/4 j 01 r347 carbon resistor 1.0m 1/4 j 01 r348 carbon resistor 10.0k 1/4 j 01 r349 carbon resistor 100.0k 1...

  • Page 46

    Emx660 18 : new parts ref no. Part no. Description remarks qty rank rank: japan only c152 ceramic capacitor-sl 100p 50v j 01 c153 monolithic ceramic cap. 0.1 50v z 01 c154 monolithic ceramic cap. 0.1 50v z 01 c155 ceramic capacitor-sl 100p 50v j 01 c156 capacitor 1000p 400v j.U.C.S 01 c157 capacitor...

  • Page 47

    Emx660 19 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * * * * * * * * * * * l101 coil oh-20 100uh l102 coil oh-20 100uh l103 ferrite bead bl02rn2-r62t4 02 l104 ferrite bead bl02rn2-r62t4 02 l105 coil rz-001 21mm 02 l106 coil rz-001 21mm 02 pr101 positive thermist...

  • Page 48

    Emx660 20 : new parts ref no. Part no. Description remarks qty rank rank: japan only r121 wire wound resistor 0.22 5w k -124 wire wound resistor 0.22 5w k r125 flame proof c. Resistor 22.0 1/4 j 01 r126 flame proof c. Resistor 22.0 1/4 j 01 r127 flame proof c. Resistor 33.0 1/4 j 01 r128 flame proof...

  • Page 49

    Emx660 21 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * r200 carbon resistor 56.0k 1/4 j 01 r201 flame proof c. Resistor 10.0 1/4 j 01 -204 flame proof c. Resistor 10.0 1/4 j 01 r205 carbon resistor 560.0 1/4 j 01 -208 carbon resistor 560.0 1/4 j 01 ry101 relay d...

  • Page 50

    Component side component side component side component side component side mix circuit board sub circuit board pwr 1/3 circuit board pwr 2/3 circuit board pwr 3/3 circuit board dm: 2na-v466260 3 sub: 3na-v511100 1 pwr1/3: 3na-v522710 1 pwr2/3: 3na-v522710 1 pwr3/3: 3na-v522710 1 a power amp1 cn101 c...

  • Page 52

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