Yamaha DP-U50 Service Manual
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Yamaha DP-U50 Service Manual

Yamaha DP-U50 Service Manual

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Download this manual See also: Operating Manual, Setup Manual
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3 7 63 1515 0
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L 13942296513
I CONTENTS
TO SERVICE PERSONNEL ........................................... 1
FRONT PANEL ............................................................... 2
REAR PANELS ............................................................... 2
SPECIFICATIONS ........................................................... 3
INTERNAL VIEW ............................................................ 4
DISASSEMBLY PROCEDURES .................................... 4
SELF DIAGNOSIS FUNCTION ............................... 5 - 13
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IC DATA ................................................................ 15 - 24
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http://www.xiaoyu163.com
PERSONAL SOUND PROCESSER
DP-U50
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 understood by the users, and have therefore not been restated.
WARNING:
Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these
reasons, we advise all YAMAHA product owners that any service required should be performed by an
authorized YAMAHA Retailer or the appointed service representative.
IMPORTANT:
The presentation or sale of this manual to any individual or firm does not constitute authorization, certification
or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any
form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore,
inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist,
please contact the distributor's Service Division.
WARNING:
Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this
buss).
IMPORTANT:
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the
unit.
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SERVICE MANUAL
IMPORTANT NOTICE
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DISPLAY DATA ............................................................ 25
BLOCK DIAGRAM ................................................ 26 - 27
PRINTED CIRCUIT BOARD ................................. 28 - 35
IC BLOCK ............................................................. 36 - 37
SCHEMATIC DIAGRAM ....................................... 38 - 39
PARTS LIST .......................................................... 40 - 49
REMOTE CONTROL TRANSMITTER .......................... 50
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DP-U50
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Summary of Contents for Yamaha DP-U50

  • Page 1: Table Of Contents

    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 understood by the users, and have therefore not been restated.

  • Page 2: To Service Personnel

    DP-U50 3 7 63 1515 0 I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked Z AC LEAKAGE EQUIPMENT and must be replaced with parts having specifications equal WALL TESTER OR OUTLET UNDER TEST EQUIVALENT to those originally installed.
  • Page 3 DP-U50 3 7 63 1515 0 I FRONT PANEL L 13942296513 I REAR PANELS M U, C models M B, G models M A model u163 http://www.xiaoyu163.com...

  • Page 4: Specifications

    DP-U50 3 7 63 1515 0 I SPECIFICATIONS I GENERAL I AUDIO SECTION Power Supply Output Level/Impedance U, C models ..... . . AC 120V, 60Hz PRE OUT .

  • Page 5: Internal View

    DP-U50 3 7 63 1515 0 I INTERNAL VIEW DSP P.C.B. MAIN P.C.B. OPERATION (1) P.C.B. OPERATION (2) P.C.B. L 13942296513 I DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.) 1. Removal of Top Cover 2. Removal of Front Panel...

  • Page 6: Self Diagnosis Function

    DP-U50 3 7 63 1515 0 I 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.
  • Page 7 DP-U50 3 7 63 1515 0 G 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.
  • Page 8 DP-U50 3 7 63 1515 0 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 3 7 63 1515 0 G Operation procedure of DIAG menu and SUB-MENU 1) Use the UP w (forward) / DOWN q (reverse) keys to select a main menu item. 2) In case of main menu items 1. ALL and 2. DEV neither of which has sub menu, the menu item is executed when the DSP key is pressed.
  • Page 10 DP-U50 3 7 63 1515 0 Details of DIAG menu 1. ALL (Sequential test) This menu is used to execute major five items of the DIAG menu. The items are as follows. (Set the volume level to the intermediate value before execution.) Press the DSP key to advance one step to the next item.
  • Page 11 DP-U50 3 7 63 1515 0 3. DSP 4. FL (DSP Test) (FL Test) This menu is a lighting program for the FL display. Using this menu, it is possible to set the sound field effect and input signals.
  • Page 12 DP-U50 3 7 63 1515 0 5. AD (AD Test) There are 13 sub-menu items. 3. JUDGE (Judgment of key voltage level) Checks if the voltage level of each key is within the normal 1. KEY (Key reception test) range by comparing it with the reference value.
  • Page 13 DP-U50 3 7 63 1515 0 5. V-MAX 7. INIT (Memory initialization) Sets the main volume to 0dB. 1. MEMORY (Memory reset reservation) 6. V-MID60 Reserves the backup RAM to be reset to the factory Set the main volume to -20dB.
  • Page 14 DP-U50 3 7 63 1515 0 9. ERROR 10. DIT (Error history) (Digital input/output control) 1 – 8 E0 –E7 (Error history) 1. GENERAL The history of up to 8 errors is stored in memory. The error GENERAL category code output (0x00) codes are used to display it.

  • Page 15: Standard Operation Chart

    DP-U50 3 7 63 1515 0 I STANDARD OPERATION CHART POWER SW to ON or connecting AC cord Self-Diagnosis Backup memory mode? check Setting the initial settings Did it pass 3.5 seconds from the starting -up ? Is the power...
  • Page 16 DP-U50 3 7 63 1515 0 I IC DATA IC417 : YSS928 AC3D3 RAMA10 RAMD2 RAMA11 RAMD1 RAMD0 VDD2 VDD2 SELI8 SELI7 OPORT7 SELI6 OPORT6 SELI5 OPORT5 RAMA12 OPORT4 RAMA13 OPORT3 RAMA14 OPORT2 RAMA15 OPORT1 RAMA16 OPORT0 RAMA17 ZEROBF2L...
  • Page 17 DP-U50 3 7 63 1515 0 IC417 : YSS928 AC3D3 Name Function Crystal oscillator connecting terminal Crystal oscillator connecting terminal (24.576MHz ) SELI1 Built-in selector input 1 (SDOA1) SELI0 Built-in selector input 0 (SDOA0) SELOA Built-in selector output A...
  • Page 18 DP-U50 3 7 63 1515 0 IC417 : YSS928 AC3D3 Name Function SDWCKI1 Word clock input terminal for SDIB, SDOB interface (unconnected) SDBCKI1 Bit clock input terminal for SDIB, SDOB interface (unconnected) Ground terminal SDOB3 PCM output terminal from Sub DSP...
  • Page 19 DP-U50 3 7 63 1515 0 IC417 : YSS928 AC3D3 Name Function RAMA5 Sub DSP: External memory address terminal 5 RAMA2 Sub DSP: External memory address terminal 2 SELI13 Built-in selector input 13 (unconnected) SELI12 Built-in selector input 12 (unconnected)
  • Page 20 DP-U50 3 7 63 1515 0 IC436 : HD6417014F28 16 bit µ-COM (CPU) PE14/DACK0/AH PE15/DACK1 PA15 PLLVSS PLLCAP PLLVCC EXTAL XTAL PB2/IRQ0/RAS PB3/IRQ1/CASL PB4/IRQ2/CASH PB5/IRQ3/RDWR L 13942296513 WDTOVF RAM/CACHE 3KB/1KB EXTAL XTAL PLLVCC PLLCAP PLLVSS DIRECT • MEMORY ACCESS • CONTROLLER...
  • Page 21 DP-U50 3 7 63 1515 0 IC436 : HD6417014F28 16 bit µ-COM (CPU) Port Name Function PE14/DACK0//AH SP_ON Speaker relay control (H: ON, L: OFF ) (Not used) PE15/DACK1 T_MUTE Tripath Amp Mute (Not used) Address bus Address bus...
  • Page 22 DP-U50 3 7 63 1515 0 IC436 : HD6417014F28 16 bit µ-COM (CPU) Port Name Function Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus Data bus...
  • Page 23 DP-U50 3 7 63 1515 0 IC430 : USS-820DT-DB USB Device Controller Port Name Function No connect VDDA VDDA +3.3V power supply for analog PLL XTAL1 XTAL1 Crystal/Clock input XTAL2 XTAL2 Crystal/Clock output VDDT VDDT +3.3V power supply for USB transceiver...
  • Page 24 DP-U50 3 7 63 1515 0 IC475 : LC27287B-TF3 Embedded Array Name Function Name Function PIO8 YSS928 OVFB X'tal in (GND) PIO9 YSS928 DTSDATA X'tal out (OPEN) PIO10 YSS928 ZEROFLOG /SIOIRQ Serial IRQ (OPEN) PIO11 YSS928 CRC /FIFOIRQ FIFO IRQ (/EAINT)
  • Page 25 DP-U50 3 7 63 1515 0 IC475 : LC27287B-TF3 Embedded Array Name Function Name Function PAO1 Patch out (NC) PAI7 Patch input (YSS928 SELOA) PAO2 Patch out (NC) PAI8 Patch input (YSS928 DIRSDO) PAO3 Patch out (YSS928 SDIA) PAI9...
  • Page 26 DP-U50 3 7 63 1515 0 I DISPLAY DATA V301 : 8-ST-24GN (V6445100) PATTERN AREA G PIN CONNECTION Pin No. Connection F1 NP F1 NP 1G 2G 3G 4G 5G 6G 7G 8G P35 P34 P33 P32 P31 P30 P29 P28 P27 P26 P25 P24 P23 P22 NP F2 NP F2 Pin No.

  • Page 27: Block Diagram

    DP-U50 3 7 6 3 1 5 1 5 0 BLOCK DIAGRAM ADDRESS BUS DATA BUS DC-ON AC-DET(+12S) POWER DETECT/ RESET +5D-SUB RESET +3.3S IC412 +5S1 Q416, 419 XL403 +5S1 4M FLASH ROM SRAM 7MHz IC447 IC438 XL402 XL404 12MHz +3.3S...
  • Page 28 DP-U50 3 7 6 3 1 5 1 5 0 PRINTED CIRCUIT BOARD (Foil side) Point q (Pin 1 of IC417) Semiconductor Location DSP P.C.B. V : 2V/div, H : 50 nsec/div Ref. No. Location Ref. No. Location DC, 1 : 1 probe...
  • Page 29 DP-U50 3 7 6 3 1 5 1 5 0 PRINTED CIRCUIT BOARD (Foil side) Point t-A (CH1 : Emitter of Q416) Semiconductor Location DSP P.C.B. Point t-B (CH2 : Collector of Q419) Ref. No. Location Ref. No. Location...
  • Page 30 DP-U50 3 7 6 3 1 5 1 5 0 PRINTED CIRCUIT BOARD (Foil side) MAIN P.C.B. Semiconductor Location Ref. No. Location FROM : DSP CENTER RLCH /C MU /R MU RRCH /S MU FRCH PHONE FLCH AGND Ref. No.
  • Page 31 DP-U50 3 7 6 3 1 5 1 5 0 PRINTED CIRCUIT BOARD (Foil side) OPERATION (1) P.C.B. Semiconductor Location Ref. No. Location (Lead Type Device) D301 OPERATION (2) P.C.B. D302 D303 D304 W302 FROM : DSP (Lead Type Device)

  • Page 32: Ic Block

    DP-U50 3 7 6 3 1 5 1 5 0 IC BLOCK IC477 : CS5360-KSR IC439, 440 : AD1854JSRSRL IC432 : MSM514260C-60JS 24-Bit A/D Converter 24-Bit, 96kHz, Multibit Sigma-Delta D/A Converter 262,144-word x 16 bit Dynamic RAM DGND DVDD...

  • Page 33: Schematic Diagram

    DP-U50 SCHEMATIC DIAGRAM (DSP) Point q (Pin 1 of IC417) V : 2V/div, H : 50 nsec/div USB CONTROLLER DC, 1 : 1 probe TO OPE (1) P-E39/J37 Point w (Pin 4 of IC430) V : 1V/div, H : 50 nsec/div...
  • Page 34 DP-U50 IC6, 8 : µPC4570HA IC10, 11 : PQ05RD11 IC7 : BA15218N SCHEMATIC DIAGRAM (MAIN & OPERATION) +5.0V Regulator Dual OP-Amp Dual OP-Amp CIRCUIT CHANGES BY MARKET. – – – – 10.5 –Vm –Vm TO OPE (1) SAME PAGE -20.6...

  • Page 35: Parts List

    DP-U50 3 7 63 1515 0 WARNING PARTS LIST Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. Carbon resistors (1/6W or 1/4W) are not included in the ELECTRICAL PARTS I ELECTRICAL PARTS List.
  • Page 36 DP-U50 3 7 63 1515 0 P.C.B. DSP Schm Schm Ref. PART NO. Description Ref. PART NO. Description V6550600 P.C.B. DSP(UC) C456 US035100 C.CE.M.CHP 0.1uF V6550700 P.C.B. DSP(A) C462 US035100 C.CE.M.CHP 0.1uF V6550800 P.C.B. DSP(BG) C463 UR837100 C.EL 10uF CB409 VQ047100 CN.BS.PIN...
  • Page 37 DP-U50 3 7 63 1515 0 P.C.B. DSP Schm Schm Ref. PART NO. Description Ref. PART NO. Description C564 US062100 C.CE.M.CHP 100pF C642 UU147100 C.EL 10uF C565 US062470 C.CE.M.CHP 470pF C643 UU147100 C.EL 10uF C566 US062470 C.CE.M.CHP 470pF C644 US062100 C.CE.M.CHP 100pF C567 US062470 C.CE.M.CHP 470pF...
  • Page 38 DP-U50 3 7 63 1515 0 P.C.B. DSP Schm Schm Ref. PART NO. Description Ref. PART NO. Description C705 US035100 C.CE.M.CHP 0.1uF D411 VT332900 DIODE 1SS355 C706 US035100 C.CE.M.CHP 0.1uF D412 VT332900 DIODE 1SS355 C707 US035100 C.CE.M.CHP 0.1uF D413 VT332900 DIODE 1SS355 C708 US035100 C.CE.M.CHP 0.1uF...
  • Page 39 DP-U50 3 7 63 1515 0 P.C.B. DSP & OPERATION Schm Schm Ref. PART NO. Description Ref. PART NO. Description * JK401 V3671200 JACK.USB XL403 VV762900 RSNR.CRYS 7MHz SMD-49 * JK402 V6385400 JACK.PIN * XL404 VY712700 RSNR.CRYS 11.2896M SMD-49 * JK403 V6385400 JACK.PIN...
  • Page 40 DP-U50 3 7 63 1515 0 P.C.B. MAIN Schm Schm Ref. PART NO. Description Ref. PART NO. Description V6441000 P.C.B. MAIN(UC) * C83 UU147330 C.EL 33uF V6441100 P.C.B. MAIN(ABG) * C84 UU147330 C.EL 33uF VM859600 CN.BS.PIN * C85 UU147330 C.EL 33uF VQ047400 CN.BS.PIN...
  • Page 41 DP-U50 3 7 63 1515 0 P.C.B. MAIN & CHIP RESISTOR Schm Schm Ref. PART NO. Description Ref. PART NO. Description VE613400 TR 2SD1858 Q,R RF456100 R.CAR.CHP 1.0KΩ 1/10W VD678700 TR.DGT DTC114ES RF456120 R.CAR.CHP 1.2KΩ 1/10W VD678500 TR.DGT DTA114ES RF456150 R.CAR.CHP...
  • Page 42 DP-U50 3 7 63 1515 0 EXPLODED VIEW 200-1 3-12 L 13942296513 1-14 3-22 3-11 1-21 1-15 3-21 3-14 3-15 1-13 1-21 3-13 1-21 1-11 1-18 1-19 3-22 3-21 1-21 1-17 1-21 1-21 1-16 u163 1-12 http://www.xiaoyu163.com...
  • Page 43 DP-U50 3 7 63 1515 0 MECHANICAL PARTS Ref. PART NO. Description Remarks Markets * 1-1 V6440800 P.C.B. ASS'Y OPERATION * 1-3 V7029600 CONNECTOR, FLAT CABLE 17P 230mm P=1.25 Vi491100 FERRITE CORE * 1-11 V6052500 FRONT PANEL * 1-12...
  • Page 44 DP-U50 3 7 63 1515 0 Ref. PART NO. Description Remarks Markets 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 L 13942296513...
  • Page 45 DP-U50 3 7 63 1515 0 REMOTE CONTROL TRANSMITTER I SCHEMATIC DIAGRAM POWER AUX1 KI/O0 KI/O1 KI/O2 AUX2 ON/OFF KI/O3 KI/O4 VOL+ VOL– MUTE KI/O5 OSC0 KI/O6 SW14 SW15 SW16 455kHz OSC1 KI/O7 HALL JAZZ CHURCH GAME SW17 SW18...

  • Page 46: Parts List For Carbon Resistors

    DP-U50 3 7 63 1515 0 Parts List for Carbon Resistors Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No. 1.0 Ω 3100 3100 7100 10 kΩ 7100 HJ35 HF85...

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