Service manual pk 001627 hamamatsu, japan contents specifications .............................................. 3/4 panel layout ...................................... 5 psr-740 block diagram .... 6 psr-640 block diagram .... 7 circuit board layout ................. 8 disassembly procedure ...........
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 have there...
3 keyboards • 61 standard-size keys (c1 - c6) with touch response. Display • large multi-function lcd display setup • standby/on • master volume : min - max • input volume : mic/line (psr-740) demo • psr-740 : 10 songs • psr-640 : 8 songs language • english, german, french, spanish, italian, japanes...
4 psr-740/psr-640
5 psr-740/psr-640 panel layout groove on/off part on/off fingering on/off reverb dsp4 talk voice l voice r1 voice r2 acmp on/off sync start sync stop disk in use main/auto fill count intro intro acmp song simple ending ending freeze back next c1 click 36 t 37 s 39 f1 41 r g1 43 l d2 50 m e2 52 h 42 ...
6 psr-740 block diagram psr-740/psr-640 28ca1-8814457 pn ic29 ic33 ic24 108 114 120 123 122 5 43 48 114 94,96 ic23 ic25 ic31 ic27 ic26 ic32 ic3 ic1 ic30 ic2 8 ic22 ic28 33 232 231 34 35 234 134 77 76,222,225 86,98,99 102,103 223,221 81 101 135 136 ic6 ic4 ic14 ic14 ic7 ic8 ic15 ic11 ic12 ic9 ic310 i...
7 psr-640 block diagram psr-740/psr-640 28ca1-8813472 ic190 ic260 ic200 ic600 ic290 ic370 ic610 ic900 ic610 ic310 ic210,220 ic320 ic510 ic410 ic610 ic710 ic1 pc1 ic360 ic360 ic350 ic330 ic300 ic320 ic310 ic510 tr501-505 ic530 ic500 11 ic430 ic420 ic410 ic400 ic800 19 6 17 10 13 14 37 1 3 5 7 20 21 4...
8 circuit board layout psr-740/psr-640 upper case lcd u lcd l pitch bend wheel modulation wheel ( psr-740 only ) keyboard assembly lower case floppy disk drive ( fdd ) am ( hp ) speaker l ( woofer ) jack speaker r (woofer) speaker r (tweeter) (am) ( psw ) speaker l tweeter > ( vr ) psr-740 only > mk...
9 psr-740/psr-640 ref. No. Q q q q q w w w w w e e e e e r r r r r t t t t t y y y y y u u u u u i i i i i o o o o o !0 !0 !0 !0 !0 !1 !1 !1 !1 !1 !2 !2 !2 !2 !2 !3 !3 !3 !3 !3 !4 !4 !4 !4 !4 !5 !5 !5 !5 !5 !6 !6 !6 !6 !6 !7 !7 !7 !7 !7 !8 !8 !8 !8 !8 !9 !9 !9 !9 !9 @0 @0 @0 @0 @0 @1 @1 @1 @1 @1 @2 ...
10 psr-740/psr-640 [260]: bind head tapping screw-p 3.0 x 12 mfzn2y (ep600300) [270a]: bind head tapping screw-p 3.0 x 25 mfzn2y (vk228100) disassembly procedure fig.1 [260] [260] [260] [270a] [260] [260] 1. Lower case assembly 1-1 remove the sixteen (16) screws marked [260] and the two (2) screws m...
11 psr-740/psr-640 [240a] [250a] [250a] [250a] [240a] [240a] [250a] [240c] [240b] [250c] [250c] [240a] [250a] [250a] [240b] inv mic mic-jack upper case side shield cover l [190f] x 30 [190f] x 3 [190g] x 4 [190m] [190k] x 4 back-lit assembly lcd u lcd l [190l] x 4 [190h] x 5 [190m] [190e] [190m] [19...
Psr-740/psr-640 [140] [140] 15. Fdd 15-1 remove the lower case assembly. (see procedure 1.) 15-2 remove the four (4) screws marked [60]. The fdd assembly can then be removed. (fig.5) 15-3 remove the four (4) screws marked [40]. The fdd holder l and r can then be removed from the fdd assembly. (fig.6...
13 psr-740/psr-640 17. Assembling the keyboard assembly 17-1 install the white keys cegb from the lower notes, and then install the dfa keys and c' key. Afterwards install the black keys from the higher notes, and tighten the twenty- one (21) screws marked [140]. (fig.8) 17-2 install the rubber cont...
14 psr-740/psr-640 1 /wrhh/pa23 o hh write/port a 73 d15 i/o 2 dack0/pe14 o dma transfer strobe/port e 74 d14 i/o data bus 3 /wrhl/pa22 o hl write/port a 75 d13 i/o 4 /cashh/pa21 i/o hh column address strobe/port a 76 d12 i/o 5 dack1/pe15 o dma transfer strobe/port e 77 vcc i power supply 6 vss i gr...
15 psr-740/psr-640 hg73c205afd (xu947c00) swx00b tone generator 1 icn i initial clear 85 cma3 o program address bus 2 rfclki i pll clock 86 cma8 o program address bus 3 tm2 i pll control 87 cma2 o program address bus 4 avdd_pll power supply 88 crd o read signal 5 avss_pll ground 89 cma1 o program ad...
16 psr-740/psr-640 tc203c760hf-002 (xs725a00) swp30b (awm tone generator coped with meg) standard wave processor ( ) pin no. 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 6...
17 psr-740/psr-640 yss236-f (xt013a00) vop3 pin no. 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 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 i/o o o o o o o o...
18 psr-740/psr-640 1 ainr+ i analog signal input (r channel +) 13 dgnd - digital ground 2 ainr- i analog signal input (r channel -) 14 tst4 i/o test mode setting 4 3 vref o reference voltage 15 amode2 interface clock select 2 4 va - analog power supply 16 /pd i power-down mode 5 agnd - analog ground...
Sn74hcu04nsr (xc723a00) sn74hcu04n (ig142250) hex inverter 1 2 3 4 5 6 7 1a 1y 2a 2y 3a 3y vss 14 13 12 11 10 9 8 vdd 6a 6y 5a 5y 4a 4y sn74hc08nsr (xd831a00) hd74lvc08fp (xu720a00) quad 2 input and 1 2 3 1a 1y 4 2a 5 2b 6 2y 7 vss 1b 14 13 12 vdd 4a 11 4y 10 3b 9 3a 8 3y 4b tc74hc32af (xn241a00) qu...
20 circuit boards dm circuit board (psr-740) component side tr1 installation 2na-v320040-1 0 psr-740/psr-640 bind head tapping screw-b 3.0 x 8 (ep600190) dm note: see parts list for details of circuit board component parts..
Master volume standby/on phones 21 dm circuit board 〈 psr-740 〉 dm: 2na-v320040-1 0 ic710 hs100 (heat sink) bind head tapping screw-b 3.0 x 8 (ep600190) 2pcs bind head tapping screw-b 3.0 x 10 (ep600220) 2pcs grease am (am) ic310 20mm bind head tapping screw-b 3.0 x 8 (ep600190) am (am) psr-740/psr-...
22 psr-740/psr-640 dm circuit board 〈 psr-640 〉 component side pattern side 2na-v350510-1,2 1.
23 psr-740/psr-640 pn (pn1) circuit board component side 2na-v386670 data dial pn (pn2) circuit board pn (pn3) circuit board pn (pn4) circuit board pn (enc) circuit board pn (wh3) circuit board 〈 psr-740 〉 pn (wh2) circuit board 〈 psr-740 〉 pn (wh1) circuit board 〈 psr-640 〉 component side component...
24 jack circuit board component side jack: 2na-v463930 inv: 2na-v420050 mic,mic-jack: 2na-v420190 foot volume to host mac/pc1/pc2/midi midi in midi out foot sw. R l/l+r dc-in aux out input vol psr-740/psr-640 mk-l circuit board mk-h circuit board component side component side component side mks3 cir...
25 psr-740/psr-640 test no. Lcd (initial) test functions and judgment criteria test program a. Preparation 1) pa-6 (ac adaptor) is used. 2) the volume is usually moved to the use position when no volume change is required. 3) measuring instruments: frequency counter, level meter (with jis-c filter) ...
26 psr-740/psr-640 15 015: output l connect the level meter (with a jis-c filter) to the [phones] jack. (33 ohm load) set the [master volume] at maximum and check the output level (1 khz). Phones l: -8.0 dbm +/- 2 db phones r: less than -50.0 dbm connect the monaural plugs of the level meter (with a...
27 psr-740/psr-640
28 psr-740/psr-640
29 psr-740/psr-640 caution • all registration and user style/pad memory data, plus the other settings listed above, will be erased and/or changed when the data initialization procedure is carried out. • carrying out the data initialization procedure will usually restore normal operation if the psr-7...
30 psr-740/psr-640 alert message list the file is a purposely “copy-protected” disk. The copy function is not possible. The disk contains no file to be loaded, copied, or be deleted. Insert the disk that contains files to be loaded, copied, or deleted. An unformatted disk is inserted. An error occur...
31 psr-740/psr-640 this message appears when you attempt to edit, quantize or clear the track which contains no data in the record mode. This message indicates that recording a new user style cannot be started when all three user styles have recorded data. Make sure to clear at least one of the thre...
32 psr-740/psr-640
33 psr-740/psr-640
34 psr-740/psr-640 midi → note off 8nh in note on/off 9nh control change bank select msb bnh,00h bank select lsb bnh,20h modulation bnh,01h portamento time bnh,05h data entry msb bnh,06h data entry lsb bnh,26h main volume bnh,07h panpot bnh,0ah expression bnh,0bh sustain bnh,40h portamento bnh,41h ...
35 psr-740/psr-640 vocal harmony harmony mute bnh,63h,00h,62h,01h,06h,mmh (psr-740 only) detune modulation bnh,63h,01h,62h,1ah,06h,mmh (psr-740 only) harmony1 volume bnh,63h,02h,62h,10h,06h,mmh (psr-740 only) harmony2 volume bnh,63h,02h,62h,11h,06h,mmh (psr-740 only) harmony1 pan bnh,63h,02h,62h,20h...
36 psr-740/psr-640 (3-2-2) reset all controllers (receive only) (control number = 79h , data value = 0) resets controllers as follows. Pitch bend change 0 (center) after touch 0 (min.) modulation 0 (min.) expression 127 (max.) sustain 0 (off) sostenuto 0 (off) soft pedal 0 (off) nrpn sets number to ...
37 psr-740/psr-640 (3-6-1-2) tempo control binary hexadecimal 11110000 f0 exclusive status 01000011 43 yamaha id 01111110 7e style 00000000 01 0ttttttt tt tempo4 0ttttttt tt tempo3 0ttttttt tt tempo2 0ttttttt tt tempo1 11110111 f7 end of exclusive the internal clock will be set to the received tempo...
38 psr-740/psr-640 (3-6-4) clavinova midi compliance (3-6-4-1) doc multi timbre on / off (receive only) binary hexadecimal 11110000 f0 exclusive status 01000011 43 yamaha id 01110011 73 clavinova id 00000001 01 clavinova commmon id 00010nnn 1n n: 3(doc multi timbre off), 4(doc multi timbre on) 11110...
39 psr-740/psr-640 parmeter basic address parameter change address (h) (m) (l) description system 00 00 00 system 00 00 7d drum setup reset 00 00 7e xg system on 00 00 7f all parameter reset information 01 00 00 system information effect 1 02 01 00 effect1(reverb,chorus,variation) multi eq 02 40 00 ...
40 psr-740/psr-640 address size data prameter name description default value (h) (h) (h) (h) 02 01 40 2 00..7f variation type msb refer to the ef. Type list 05(=delay l,c,r) 00..7f variation type lsb 00 : basic type 00 42 2 00..7f vari. Param. 1 msb refer to the ef. Parameter list depend on vari. Ty...
41 psr-740/psr-640 03 0n 30 2 00..7f ins. Param.1 msb refer to the ef. Parameter list depend on insertion type 00..7f ins. Param.1 lsb refer to the ef. Parameter list depend on insertion type 03 0n 32 2 00..7f ins. Param.2 msb refer to the ef. Parameter list depend on insertion type 00..7f ins. Para...
42 psr-740/psr-640 nn 1d 1 28..58 mw pitch control -24..+24[semitones] 40 nn 1e 1 00..7f mw filter control -9600..+9450[cent] 40 nn 1f 1 00..7f mw amp. Control -100..+100[%] 40 nn 20 1 00..7f mw lfo pmod depth 0..127 0a nn 21 1 00..7f mw lfo fmod depth 0..127 00 nn 22 1 00..7f mw lfo amod depth 0..1...
43 psr-740/psr-640 effect type list xg essential effect same as lsb=0 xg option effect xg option effect(only psr-740) expanded type for psr-740/640 * if the received value does not contain an effect type in the type lsb, the lsb will be directed to type 0. * panel effects are based on the “[number] ...
44 psr-740/psr-640 variation type (0-63) (psr-740) type msb type lsb dec hex 00 01 02 03...07 08 09...15 16 17 18 19 20 000 00 no effect 001 01 [1]hall1 [5]hall2 [2]hall2 [3]hall3 [4]hall4 002 02 [10]room1 [11]room2 [12]room3 [6]room1 [7]room2 [8]room3 [9]room4 003 03 [15]stage1 [16]stage2 [13]stage...
45 psr-740/psr-640 hall1,hall2, room1,room2,room3, stage1,stage2, plate (reverb, variation, insertion block) no. Parameter display value see table comment control 1 reverb time 0.3-30.0s 0-69 table#4 2 diffusion 0-10 0-10 3 initial delay 0.1ms-99.3ms 0-63 table#5 4 hpf cutoff thru-8.0khz 0-52 table#...
46 psr-740/psr-640 ambience (variation block) no. Parameter display value see table comment control 1 delay time 0.0ms-50ms 0-127 table#2 2 output phase normal/invers 0-1 3 4 5 6 eq low frequency 32hz-2.0khz 4-40 table#3 7 eq low gain -12-+12db 52-76 8 eq high frequency 500hz-16.0khz 28-58 table#3 9...
47 psr-740/psr-640 touch wah 1 (variation, insertion block), touch wah+dist (variation block) no. Parameter display value see table comment control 1 sensitive 0-127 0-127 2 cutoff frequency offset 0-127 0-127 ● 3 resonance 1.0-12.0 10-120 4 5 6 eq low frequency 32hz-2.0khz 4-40 table#3 7 eq low gai...
48 psr-740/psr-640 table#11 reverb width;depth;height data value data value data value data value 0 0.5 32 8.8 64 17.6 96 27.5 1 0.8 33 9.1 65 17.9 97 27.8 2 1.0 34 9.4 66 18.2 98 28.1 3 1.3 35 9.6 67 18.5 99 28.5 4 1.5 36 9.9 68 18.8 100 28.8 5 1.8 37 10.2 69 19.1 101 29.2 6 2.0 38 10.4 70 19.4 102...
49 psr-740/psr-640 psr-740 midi implementation chart [portable keyboard] date :3-mar-1999 model : psr-740 midi implementation chart version : 1.0 function... Transmitted recognized remarks basic default 1 - 16 *1 1 - 16 *2 channel changed 1 - 16 *1 1 - 16 *2 default 3 3 mode messages x x altered ***...
50 psr-740/psr-640 psr-640 midi implementation chart [portable keyboard] date :3-mar-1999 model : psr-640 midi implementation chart version : 1.0 function... Transmitted recognized remarks basic default 1 - 16 *1 1 - 16 *2 channel changed 1 - 16 *1 1 - 16 *2 default 3 3 mode messages x x altered ***...
Contents psr-740 overall assembly .................................... 2 psr-640 overall assembly ................................... 4 upper case assembly ................................................ 6 lower case assembly ............................................. 8 keyboard assembly ..........
Psr-740/psr-640 2 psr-740 overall assembly 340 110 120 100 130 010 160 057 050 (vr) (hp) (am) 050 050 (psw) 150 055 240 240 240 180 330 240 240 180 170 330 240 020 210 292 200 250 240 040 250 282 190 250 270 070 185 290 350 270 290 050 240 260 140 145 270 260 080 240 240 030 music rest upper case as...
Psr-740/psr-640 3 * * * * * * * * * * * * * * : new parts ref no. Part no. Description remarks qty rank rank : japan only overall assembly psr-740 010 upper case assembly 020 shield cover u 030 circuit board dm 040 shield cover l 050 circuit board am 055 circuit board mic 057 circuit board mic-jack ...
Psr-740/psr-640 4 psr-640 overall assembly 110 120 100 130 010 050 (vr) 050 (am) 050 (psw) 240 240 180 330 240 240 180 330 240 020 210 292 200 250 240 040 250 282 190 250 270 070 185 290 270 290 050 (hp) 240 260 140 145 270 260 080 240 240 030 music rest 060 290 350 upper case assembly: see page 7. ...
Psr-740/psr-640 5 * * * * * * * * * * * * * ref no. Part no. Description remarks qty rank overall assembly psr-640 010 upper case assembly 020 shield cover u 030 circuit board dm 040 shield cover l 050 circuit board am 060 circuit board inv 070 keyboard assembly 16m c61 mk33 23 080 lower case assemb...
Psr-740/psr-640 6 • psr-740 010d 100a 100b 010b 010e 180 190 120 270 280 290 130 010 135 300 260 132 190 190 020 060 100 200 110 190 050 (wh3) (wh2) (pn4) (pn3) (pn2) (pn1) (enc) 050 050 050 050 050 050 240 320 010c 010a 330 190 210 230 040 250 030 310 220 190 070 190 190 190 upper case sub assembly...
7 * * * * * * * * * * * * * * * * * * * * * * * * ref no. Part no. Description remarks qty rank upper case assembly psr-740/psr-640 upper case assembly psr-740 upper case assembly psr-640 010 upper case sub assembly psr-740 010 upper case sub assembly psr-640 010a upper case psr-740 010a upper case ...
* * ref no. Part no. Description remarks qty rank lower case assembly psr-740/psr-640 010 lower case sub assembly 020 circuit board jack 030 floppy disk drive assembly 040 cover, fdd 05 050 bind head tapping screw-p 3.0x8 mfzn2y 10 01 060 bind head tapping screw-p 4.0x16 mfzn2y 4 01 070 adhesive tap...
Psr-740/psr-640 9 : new parts rank : japan only 140 90 60 60b 80 60 50 30 s7 s2 s6 s4 s5 s1 s3 110 100 120 160 120 120 120 120 130 60a circuit board assembly keyboard assembly ref no. Part no. Description remarks qty rank keyboard assembly 16m c61 mks3 psr-740/psr-640 23 30 bind head tapping screw-p...
Psr-740/psr-640 10 : new parts rank : japan only ref no. Part no. Description remarks qty rank * * * * * * * * * * * * electrical parts psr-740/640 circuit board am psr-740 circuit board am psr-640 circuit board dm psr-740 circuit board dm psr-640 circuit board inv circuit board jack psr-740 circuit...
Psr-740/psr-640 11 : new parts rank : japan only * ref no. Part no. Description remarks qty rank c0412 electrolytic cap. 47.00 16.0v 01 c0501 electrolytic cap.-bp 10.00 16.0v 01 c0502 electrolytic cap.-bp 10.00 16.0v 01 c0503 ceramic capacitor-sl 100p 50v j 01 c0504 ceramic capacitor-sl 100p 50v j 0...
Psr-740/psr-640 12 : new parts rank : japan only ref no. Part no. Description remarks qty rank r0105 carbon resistor 2.2k 1/4 j 01 r0106 carbon resistor 2.2k 1/4 j 01 r0202 carbon resistor 3.3k 1/4 j 01 r0203 carbon resistor 22.0k 1/4 j 01 r0204 carbon resistor 10.0 1/4 j 01 r0205 carbon resistor 22...
Psr-740/psr-640 13 : new parts rank : japan only ref no. Part no. Description remarks qty rank * r0604 carbon resistor 2.2k 1/4 j psr-640 01 r0605 carbon resistor 2.2k 1/4 j 01 r0701 carbon resistor 47.0k 1/4 j 01 r0702 carbon resistor 47.0k 1/4 j 01 r0703 carbon resistor 18.0k 1/4 j 01 r0704 carbon...
Psr-740/psr-640 14 : new parts rank : japan only ref no. Part no. Description remarks qty rank c0049 monolithic ceramic cap. B 470p 50v k 01 c0050 monolithic ceramic cap. Sl 27p 50v j 01 c0051 monolithic ceramic cap. Sl 27p 50v j 01 c0052 monolithic ceramic cap. F 0.010 50v z 01 c0053 monolithic cer...
Psr-740/psr-640 15 : new parts rank : japan only * * ref no. Part no. Description remarks qty rank * * * * * * * c0162 monolithic ceramic cap. F 0.010 50v z 01 c0163 electrolytic cap. 10.00 16.0v 01 c0164 electrolytic cap. 10.00 16.0v 01 c0165 monolithic ceramic cap. B 1000p 50v k 01 c0166 electroly...
Psr-740/psr-640 16 : new parts rank : japan only ref no. Part no. Description remarks qty rank ic032 ic pcm1716e dac 06 ic033 ic m5223afp op amp l0001 coil snt-d20tf 10uh 03 l0002 chip inductance bk2125hm601-t 01 -0011 chip inductance bk2125hm601-t 01 l0012 choke coil 220u elc15e221 15e 05 l0013 chi...
Psr-740/psr-640 17 : new parts rank : japan only * * * * ref no. Part no. Description remarks qty rank -0099 carbon resistor (chip) 47.0 0.1 j 01 r0100 carbon resistor (chip) 10.0k 0.1 j 01 r0101 carbon resistor (chip) 220.0 0.1 j 01 -0108 carbon resistor (chip) 220.0 0.1 j 01 r0109 carbon resistor ...
Psr-740/psr-640 18 : new parts rank : japan only ref no. Part no. Description remarks qty rank c0205 monolithic ceramic cap. Sl 100p 50v j 01 c0208 monolithic ceramic cap. Sl 22p 50v j 01 c0209 monolithic ceramic cap. Sl 22p 50v j 01 c0210 electrolytic cap. 100.00 10.0v 01 c0221 monolithic ceramic c...
Psr-740/psr-640 19 : new parts rank : japan only ref no. Part no. Description remarks qty rank * * * * * * * c0802 electrolytic cap. 100.00 10.0v 01 c0803 monolithic ceramic cap. F 0.010 50v z 01 c0901 monolithic ceramic cap. F 0.010 50v z 01 c0902 electrolytic cap. 100.00 25.0v 01 c0903 electrolyti...
Psr-740/psr-640 20 : new parts rank : japan only ref no. Part no. Description remarks qty rank r0121 carbon resistor (chip) 47.0k 0.1 j 01 r0122 carbon resistor (chip) 47.0k 0.1 j 01 r0125 carbon resistor (chip) 47.0k 0.1 j 01 -0128 carbon resistor (chip) 47.0k 0.1 j 01 r0131 carbon resistor (chip) ...
Psr-740/psr-640 21 : new parts rank : japan only ref no. Part no. Description remarks qty rank * * * * * * * x0801 ceramic resonator 16.00m cstcv16.0 zd911 zener diode udzs5.6bte-17 5.6v 01 circuit board inv jumper wire 0.55 c0001 electrolytic cap. (chip) 0.15 100v ecqv11 c0002 ceramic capacitor-sl ...
Psr-740/psr-640 22 : new parts rank : japan only ref no. Part no. Description remarks qty rank * * * * * * * r011 carbon resistor 10.0k 1/4 j 01 -014 carbon resistor 10.0k 1/4 j 01 r015 carbon resistor 220.0 1/4 j 01 r016 carbon resistor 220.0 1/4 j 01 r017 carbon resistor 100.0 1/4 j 01 r018 carbon...
Psr-740/psr-640 23 : new parts rank : japan only * * * * ref no. Part no. Description remarks qty rank wire trap 52147 12p te 01 wire trap 52147 5p te 01 circuit board mks3 (xu878b0) 10 vibration-proof tape 10x64x0.5 (vk34680) jumper wire 0.55 5 c1 ceramic capacitor-sl 22p 50v j 01 c1 ceramic capaci...
Psr-740/psr-640 24 : new parts rank : japan only ref no. Part no. Description remarks qty rank ld020 led slz-190b-17-t1 re voice r2 01 ld021 led slz-190b-03 re main d 01 ld023 led slz-190b-17-t1 re psr-740 fast/slow 01 ld024 led slz-190b-17-t1 re touch 01 ld030 led slz-190b-17-t1 re voice r1 01 ld03...
Psr-740/psr-640 25 : new parts rank : japan only ref no. Part no. Description remarks qty rank * * * sw503 tact switch skqnae025a style,6,pad4,voice l, 01 -508 tact switch skqnae025a main b,freeze 01 sw509 tact switch skqnae025a psr-740 intro1 01 sw510 tact switch skqnae025a demo 01 sw511 tact switc...
Cpu 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 psr-740 circuit diagram (dm1/2, mks3, mkh, mkl, inv) psr-740 psr-740 psr-740 mks3 mkh dm mkl inv l c d to back - light assembly floppy disk drive to pn1-cn8 to jack-jk5 to am...
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 psr-740 circuit diagram (dm2/2, mic-jack, mic) psr-740 psr-740 psr-740 dm to dm-cn3 to am-cn320 mic mic-jack swp30b vop3 inverter inverter wave rom ll 32m wave rom hl 32m wave ro...
Cpu 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 psr-640 circuit diagram (dm, mks3, mkh, mkl, inv) psr-640 psr-640 psr-640 mks3 mkh dm mkl inv to jack-jk5 to pn1-cn8 to am - cn320 to am - cn310 l c d floppy disk drive to pn...
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 psr-740 / psr-640 overall circuit diagram (am, hp, p.Sw, vr, jack, pn1, pn2, pn3, pn4, wh1, wh2, wh3, enc) psr-740 / psr-640 psr-740 / psr-640 psr-740 / psr-640 jack pn1 pn2 pn3 ...
