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Yamaha DP-U50 Service Manual

Other manuals for DP-U50: Setup Manual, Operation Manual, Service Manual

Summary of DP-U50

  • Page 1

    Dp-u50 dp-u50 personal sound processer 1 0 0 7 3 6 ■ contents to service personnel ........................................... 1 front panel ............................................................... 2 rear panels ............................................................... 2 specifications ...

  • Page 2: Warning: Chemical

    Dp-u50 dp-u50 ■ to service personnel 1. Critical components information components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. 2. Leakage current measurement (for 120v models only) when service has been comple...

  • Page 3

    Dp-u50 dp-u50 2 ■ front panel ▼ u, c models ■ rear panels ▼ a model ▼ b, g models www. Xiaoyu163. Com qq 376315150 9 9 2 8 9 4 2 9 8 tel 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 q q tel 13942296513 qq 376315150 892498299 tel 13942296513 qq 376315150 892498299 http://www.Xiaoyu163.Com http://w...

  • Page 4

    Dp-u50 dp-u50 3 ■ audio section output level/impedance pre out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0v/2.0k Ω sub woofer (50hz) . . . . . . . . . . . . . . . . . . . . . . 2.0v/1.7k Ω input sensitivity/impedance pc, aux 1, aux 2 (analog) . . . . . . . . . . . . 150mv/35k Ω max...

  • Page 5

    Dp-u50 dp-u50 4 ■ internal view ■ disassembly procedures (remove parts in the order as numbered.) 1. Removal of top cover remove 14 screws ( q and w ) and then remove the top covers in fig. 1. Q dsp p.C.B. W main p.C.B. E operation (1) p.C.B. R operation (2) p.C.B. R w q e 2. Removal of front panel ...

  • Page 6

    Dp-u50 dp-u50 5 ■ self diagnosis function this product has a built-in self diagnosis function (diag) that can be used for inspection, measurement and determination of a faulty point, if any. There are ten menu items, each of which has a number of sub menu items. Listed below are these menu items and...

  • Page 7

    Dp-u50 dp-u50 6 ● starting diag while the opening message appearing at the power on is on display, press the “dsp” key 3 times; quickly at the first and second times and keep pressing it at the third time until the diag function is started. ● display when diag function is started first, “diag” appea...

  • Page 8

    Dp-u50 dp-u50 7 when the protection function works and the power is turned off after diag was started when the protection function (*2) works, its history appears in the abbreviated form as described below and the power turns off. Correct the failure based on the history of the protection function. ...

  • Page 9

    Dp-u50 dp-u50 8 ● canceling diag there are two methods to cancel the diag function. 1) press the “power” (standby) key of the main unit or the “power” (standby) key of the remote controller to enter the stand-by state. 2) selecting the diag menu item 0. Exit, cancel the diag function. Then the self-...

  • Page 10

    Dp-u50 dp-u50 9 details of diag menu display bit 7 6 5 4 0 0 0 0 0 1 0 0 0 1 display 0 0 0 0 0 0 0 0 0 0 bit 7 6 5 4 3 2 1 0 display bit 3 2 1 0 0 0 0 0 0 1 0 0 0 1 2 0 0 1 0 3 0 0 1 1 4 0 1 0 0 5 0 1 0 1 6 0 1 1 0 7 0 1 1 1 8 1 0 0 0 9 1 0 0 1 a 1 0 1 0 b 1 0 1 1 c 1 1 0 0 d 1 1 0 1 e 1 1 1 0 f 1 1...

  • Page 11

    Dp-u50 dp-u50 10 3. Dsp (dsp test) using this menu, it is possible to set the sound field effect and input signals. There are 14 sub-menus. 1. Through [remote control code : 7b—16(vdd)] passes signals through the dsp section. 2. Delay [remote control code : 7b—1f(test)] uses the delay function in th...

  • Page 12

    Dp-u50 dp-u50 11 5. Ad (ad test) there are 13 sub-menu items. 1. Key (key reception test) checks if pressing of each key is properly received, using the key reception program. Keys should be checked in the order of usb, pc, aux1, aux2, dsp, mute, down (q) and up (w). When the key reception test is e...

  • Page 13

    Dp-u50 dp-u50 12 5. V-max sets the main volume to 0db. 6. V-mid60 set the main volume to -20db. 7. V-mid55 sets the main volume to -25db. 8. V-mid52 sets the main volume to -28db. 9. V-mid49 sets the main volume to -31db. 10. V-mid29 sets the main volume to -51db. 11. V-mid1 sets the main volume to ...

  • Page 14

    Dp-u50 dp-u50 13 9. Error (error history) 1 – 8 e0 –e7 (error history) the history of up to 8 errors is stored in memory. The error codes are used to display it. 9. Clear (error history clear) clears the entire error history in memory and overwrites with the normal value (00). 10. Return returns the...

  • Page 15

    Dp-u50 dp-u50 14 ■ standard operation chart power sw to on or connecting ac cord backup memory check setting the initial settings is the power turned on at the standby mode ? Reseting gate arry ic & usb microcontroller resetting fl driver ic is the power turned to on? Standby process turning the pow...

  • Page 16

    Dp-u50 dp-u50 15 ic417 : yss928 ac3d3 120 11 118 117 116 11 114 113 112 111 110 109 108 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 78 77 80 79 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 13 107 14 106 15 105 16 104 17 103 18 102 19 101 20 100 99 98 97 96 95 94 93 92 91 90 89 88 ...

  • Page 17

    Dp-u50 dp-u50 16 no. Name i/o function 1 xo o crystal oscillator connecting terminal 2 xi i crystal oscillator connecting terminal (24.576mhz ) 3 seli1 i+ built-in selector input 1 (sdoa1) 4 seli0 i+ built-in selector input 0 (sdoa0) 5 seloa o+ built-in selector output a (pai7) 6 selob o+ built-in s...

  • Page 18

    Dp-u50 dp-u50 17 no. Name i/o function 56 sdwcki1 i+ word clock input terminal for sdib, sdob interface (unconnected) 57 sdbcki1 i+ bit clock input terminal for sdib, sdob interface (unconnected) 58 vss ground terminal 59 sdob3 o pcm output terminal from sub dsp (sdob3) 60 sdob2 o pcm output termina...

  • Page 19

    Dp-u50 dp-u50 18 no. Name i/o function 111 rama5 o sub dsp: external memory address terminal 5 112 rama2 o sub dsp: external memory address terminal 2 113 seli13 i+ built-in selector input 13 (unconnected) 114 seli12 i+ built-in selector input 12 (unconnected) 115 seli11 i+ built-in selector input 1...

  • Page 20

    Dp-u50 dp-u50 19 ic436 : hd6417014f28 16 bit µ-com (cpu) 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 pe14/dack0/ah pe15/dack1 vss a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 vcc a17 vss pb2/irq0/ras pb3/irq1/casl pb4/irq2/cash vss pb5/irq3/rdwr res pa15 p...

  • Page 21

    Dp-u50 dp-u50 20 ic436 : hd6417014f28 16 bit µ-com (cpu) no. Port name i/o function 1 pe14/dack0//ah sp_on o speaker relay control (h: on, l: off ) (not used) 2 pe15/dack1 t_mute o tripath amp mute (not used) 3 vss vss gnd 4 a0 a0 o address bus 5 a1 a1 o address bus 6 a2 a2 o address bus 7 a3 a3 o a...

  • Page 22

    Dp-u50 dp-u50 21 ic436 : hd6417014f28 16 bit µ-com (cpu) no. Port name i/o function 57 d11 d11 i/o data bus 58 d10 d10 i/o data bus 59 d9 d9 i/o data bus 60 d8 d8 i/o data bus 61 vss vss gnd 62 d7 d7 i/o data bus 63 d6 d6 i/o data bus 64 d5 d5 i/o data bus 65 vcc vcc +5v 66 d4 d4 i/o data bus 67 d3 ...

  • Page 23

    Dp-u50 dp-u50 22 ic430 : uss-820dt-db usb device controller no. Port name i/o function 1 nc nc no connect 2 vdda vdda +3.3v power supply for analog pll 3 xtal1 xtal1 i crystal/clock input 4 xtal2 xtal2 o crystal/clock output 5 vddt vddt +3.3v power supply for usb transceiver 6 dmns dmns i/o usb diff...

  • Page 24

    Dp-u50 dp-u50 23 no. Name i/o function 1 vss i gnd 2 xi i x'tal in (gnd) 3 xo o x'tal out (open) 4 /sioirq o serial irq (open) 5 /fifoirq o fifo irq (/eaint) 6 a0 i address bus 7 a1 i address bus 8 a2 i address bus 9 a3 i address bus 10 a4 i address bus 11 a5 i address bus 12 test9 i (open) 13 test1...

  • Page 25

    Dp-u50 dp-u50 24 no. Name i/o function 111 vss i gnd 112 pai7 i patch input (yss928 seloa) 113 pai8 i patch input (yss928 dirsdo) 114 pai9 i patch input (open) 115 pai10 i patch input (gnd) 116 pai11 i patch input (open) 117 pai12 i patch input (open) 118 pai13 i patch input (pc in) 119 pai14 i patc...

  • Page 26

    Dp-u50 dp-u50 25 v301 : 8-st-24gn (v6445100) ● grid assignment ^0 #1 pattern area q #0 note 1) f1, f2 ......... Filament 2) np .............. No pin 3) ic ................ Internal connection 4) p1~p35 ....... Datum line 5) 1g~8g ........ Grid ● pin connection pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 1...

  • Page 27

    A b c d e f g h 1 2 3 4 5 6 dp-u50 e-27/j-25 ■ block diagram e-26/j-24 d-rst xl401 xl403 ic418a ic418b ic418c ic418d xl402 pc in aux 1 in aux 2 in opt out coax in opt in aux 1 opt in pc l r l r l r ic445a ic445b ic478a ic478b ic478c ic478d ic474a lc75342m input selector usb digit al analog 143 146 1...

  • Page 28

    A b c d e f g h 1 2 3 4 5 6 dp-u50 e-28/j-26 e-29/j-27 ■ printed circuit board (foil side) 1 2 3 4 1 40 41 80 81 120 121 160 1 24 25 48 1 28 29 56 57 84 85 112 1 4 5 8 1 7 8 14 1 20 21 40 1 44 45 88 89 132 133 176 1 12 13 24 25 36 37 48 1 7 8 14 1 14 15 28 1 14 15 28 1 10 11 20 1 4 5 8 1 4 5 8 1 4 5...

  • Page 29

    A b c d e f g h 1 2 3 4 5 6 dp-u50 ■ printed circuit board (foil side) e-31/j-29 e-30/j-28 5 5 a b 1 16 17 32 1 7 8 14 1 4 5 8 dsp p.C.B. (surface mount device) point t-a (ch1 : emitter of q416) point t-b (ch2 : collector of q419) v : 5v/div (ch1), v : 2v/div (ch2) dc, 1 : 1 probe, h : 5 sec/div ch1...

  • Page 30

    A b c d e f g h 1 2 3 4 5 6 dp-u50 ■ printed circuit board (foil side) e-32/j-30 ref. No. Location d5 e2 d6 f3 d7 f3 d8 e3 d9 c3 d14 d5 d15 e4 d16 e4 d17 d2 d18 f3 d19 f3 ref. No. Location ic3 e2 ic6 e2 ic7 f2 ic8 f2 ic10 f2 ic11 f2 ic12 e3 ● semiconductor location ref. No. Location q1 e3 q2 f3 q3 e...

  • Page 31

    A b c d e f g h 1 2 3 4 5 6 dp-u50 ■ printed circuit board (foil side) e-35/j-33 e-34/j-32 usb pc aux 1 aux 2 q w dsp mute volume to : main w302 #8 gnd -21v fl2 fl1 +5sw p sw nc from : operation (2) operation (1) p.C.B. (lead type device) e_b a/d1 +5s a ux1 tuner +5m di ceb r d a e_a p sw pc a ux2 /...

  • Page 32

    A b c d e f g h 1 2 3 4 5 6 dp-u50 ■ ic block e-36/j-34 e-37/j-35 ic432 : msm514260c-60js 262,144-word x 16 bit dynamic ram 1 vcc 2 dq1 3 dq2 4 dq3 5 dq4 6 vcc 7 dq5 8 dq6 9 dq7 10 dq8 11 nc 12 nc 13 we 14 ras 15 nc 16 a0 17 a1 18 a2 19 a3 20 vcc 40 vss 39 dq16 38 dq15 37 dq14 36 dq13 35 vss 34 dq12...

  • 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 dp-u50 ■ schematic diagram (dsp) * all voltage are measured with a 10m Ω/v dc electric volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those originally installed. * sc...

  • 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 dp-u50 ■ schematic diagram (main & operation) e-39/j-37 * all voltage are measured with a 10m Ω/v dc electric volt meter. * components having special characteristics are marked z and must be replaced with parts having specifications equal to those o...

  • Page 35: Parts List

    Dp-u50 dp-u50 40 abbreviations in this list are as follows : c.A.El.Chp : chip alumi. Electrolytic cap c.Ce : ceramic cap c.Ce.Array : ceramic cap array c.Ce.Chp : chip ceramic cap c.Ce.Ml : multilayer ceramic cap c.Ce.M.Chp : chip multilayer ceramic cap c.Ce.Safty : recognized ceramic cap c.Ce.Tubl...

  • Page 36

    Dp-u50 dp-u50 schm ref. Part no. Description new parts * schm ref. Part no. Description new parts * 41 p.C.B. Dsp * v6550600 p.C.B. Dsp(uc) * v6550700 p.C.B. Dsp(a) * v6550800 p.C.B. Dsp(bg) cb409 vq047100 cn.Bs.Pin 7p cb410 vf982300 cn.Bs.Pin 17p cb411 vm929900 cn.Bs.Pin 15p cb413 vq044900 cn.Bs.Pi...

  • Page 37

    Dp-u50 dp-u50 schm ref. Part no. Description new parts * schm ref. Part no. Description new parts * 42 p.C.B. Dsp c564 us062100 c.Ce.M.Chp 100pf 50v c565 us062470 c.Ce.M.Chp 470pf 50v c566 us062470 c.Ce.M.Chp 470pf 50v c567 us062470 c.Ce.M.Chp 470pf 50v c568 us062470 c.Ce.M.Chp 470pf 50v * c573 us06...

  • Page 38

    Dp-u50 dp-u50 schm ref. Part no. Description new parts * schm ref. Part no. Description new parts * 43 p.C.B. Dsp c705 us035100 c.Ce.M.Chp 0.1uf 16v c706 us035100 c.Ce.M.Chp 0.1uf 16v c707 us035100 c.Ce.M.Chp 0.1uf 16v c708 us035100 c.Ce.M.Chp 0.1uf 16v c709 vr169200 c.Mylar.Ml ecq‑v1h474jl3 c710 us...

  • Page 39

    Dp-u50 dp-u50 schm ref. Part no. Description new parts * schm ref. Part no. Description new parts * 44 p.C.B. Dsp & operation * jk401 v3671200 jack.Usb 4p * jk402 v6385400 jack.Pin 4p * jk403 v6385400 jack.Pin 4p * l401 v3939900 filter zjys51r5‑m4pat l402 ge901970 coil 68uh l403 ge901970 coil 68uh l...

  • Page 40

    Dp-u50 dp-u50 schm ref. Part no. Description new parts * schm ref. Part no. Description new parts * 45 p.C.B. Main * v6441000 p.C.B. Main(uc) * v6441100 p.C.B. Main(abg) cb1 vm859600 cn.Bs.Pin 15p cb2 vq047400 cn.Bs.Pin 19p cb3 vb390200 cn.Bs.Pin 6p cb6 vp206500 holder.Fus eyf‑52bct cb7 vp206500 hol...

  • Page 41

    Dp-u50 dp-u50 schm ref. Part no. Description new parts * schm ref. Part no. Description new parts * 46 p.C.B. Main & chip resistor q31 ve613400 tr 2sd1858 q,r q32 vd678700 tr.Dgt dtc114es q33 vd678500 tr.Dgt dta114es z r6 hv754220 r.Car.Fp 22Ω 1/4w z r7 hv754220 r.Car.Fp 22Ω 1/4w z r15 hv754390 r.Ca...

  • Page 42

    A b c d e 1 2 3 4 5 6 7 dp-u50 47 ■ exploded view 202 45 45 200 200-1 1-1 (1) 1-11 1-15 1-14 3-11 3-21 3-21 3-1 3-12 3-14 3-22 3-22 3-13 1-13 1-21 1-21 25 43 24 21 41 41 41 41 41 45 17 15 12 26 35 43 41 11 41 41 45 45 23 31 45 29 43 43 22 31 45 45 43 41 41 41 42 42 30 30 41 1-21 1-21 1-21 1-12 1-16 ...

  • Page 43

    Dp-u50 dp-u50 48 ■ mechanical parts ref. No. Part no. Description remarks markets new parts * * 1‑1 v6440800 p.C.B. Ass'y operation * 1‑3 v7029600 connector, flat cable 17p 230mm p=1.25 1‑5 vi491100 ferrite core * 1‑11 v6052500 front panel * 1‑12 v6052800 button * 1‑13 v6052900 button/func * 1‑14 v6...

  • Page 44

    Dp-u50 dp-u50 49 ref. No. Part no. Description remarks markets new parts * accessories * 200 v6390100 remote control transmitter rc‑7060‑01‑0014 200‑1 aax14020 lid gryjye 60050007 * 202 v4382000 usb cable 4p 2.0m * xz674a00 cd‑rom v1.0 battery, manganese sum‑3,aa,r06 www. Xiaoyu163. Com qq 376315150...

  • Page 45: Remote Control Transmitter

    A b c d e 1 2 3 4 5 6 7 dp-u50 50 remote control transmitter ■ schematic diagram 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 ki0 ki1 ki2 ki3 rem vdd sel osc0 osc1 vss ccs ki/o0 ki/o1 ki/o2 ki/o3 ki/o4 ki/o5 ki/o6 ki/o7 lmp u1 : pt2221–001 x1 455khz c2 200p c3 200p c1 47 µ f/16v b1 3v r1 1 Ω q...

  • Page 46

    Parts list for carbon resistors 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 8150 hf45 8180...