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Yamaha BD-940 Service Manual

Micro component system mcr-940.
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• When accepting a repair order from the user, it is recommended to receive BD-940 and R-840 as a set for the repair
work.
• The MCR-940 consists of the R-840, BD-940 and NS-BP300.
This service manual is for the BD-940. For service manual of the R-840/NS-BP300, please refer to the following
publication number:
• When BD module P.C.B. of this unit is replaced, the serial number and new MAC address MUST be reported to Yamaha
Corporation by e-mail.
For more information, refer to "SERVICE PRECAUTIONS".
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 specifi cally YAMAHA Products, are already known
and understood by the users, and have therefore not been restated.
WARNING:
IMPORTANT:
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
specifi cations are subject to change without notice or obligation to retrofi t. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING:
IMPORTANT:
■ CONTENTS
TO SERVICE PERSONNEL ........................................2-3
REGION MANAGEMENT INFORMATION .....................5
SYSTEM COMPOSITION ................................................6
FRONT PANEL ...............................................................7
REAR PANELS ...............................................................8
REMOTE CONTROL PANEL ..........................................9
SPECIFICATIONS ................................................... 10-12
INTERNAL VIEW .......................................................... 13
SERVICE PRECAUTIONS ...................................... 14-17
1 0 1 1 5 4
MICRO COMPONENT SYSTEM
BLU-RAY DISC PLAYER
BD-940
R-840/NS-BP300: 1011 5 3
E-mail: ycav-keycontrol@gmx.yamaha.com
IMPORTANT NOTICE
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 specifi ed. 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.
The presentation or sale of this manual to any individual or fi rm does not constitute authorization, certifi cation or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
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).
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
DISASSEMBLY PROCEDURES ............................. 18-21
UPDATING FIRMWARE ..........................................22-26
SELF-DIAGNOSTIC FUNCTION ............................27-31
DISPLAY DATA .............................................................32
IC DATA ...................................................................33-35
PIN CONNECTION DIAGRAMS .............................36-37
BLOCK DIAGRAM ........................................................39
PRINTED CIRCUIT BOARDS .................................40-44
SCHEMATIC DIAGRAMS .......................................45-48
REPLACEMENT PARTS LIST ................................49-53
REMOTE CONTROL .....................................................54
SYSTEM CONNECTOR ..........................................55-56
SETTINGS ...............................................................57-59
Copyright © 2009
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
SERVICE MANUAL
All rights reserved.
MCR-940
P.O.Box 1, Hamamatsu, Japan
'09.11

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Table of Contents

   Also See for Yamaha BD-940

   Summary of Contents for Yamaha BD-940

  • Page 1: Table Of Contents

    BLU-RAY DISC PLAYER BD-940 SERVICE MANUAL • When accepting a repair order from the user, it is recommended to receive BD-940 and R-840 as a set for the repair work. • The MCR-940 consists of the R-840, BD-940 and NS-BP300.
  • Page 2: To Service Personnel

    BD-940 ■ TO SERVICE PERSONNEL AC LEAKAGE 1. Critical Components Information WALL EQUIPMENT TESTER OR OUTLET UNDER TEST EQUIVALENT Components having special characteristics are marked ⚠ and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only)
  • Page 3 BD-940 Laser Diode Properties Type: Class 1 LASER Product Wavelength: 788 nm DVD: 654 nm 405 nm Laser power: No hazardous radiation is emitted with the safety protection. Warning for power supply The primary side of the power supply carries live mains voltage when the player is connected to the mains even...
  • Page 4: Prevention Of Electrostatic Discharge

    BD-940 ■ PREVENTION OF ELECTROSTATIC DISCHARGE Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).
  • Page 5: Region Management Information

    BD-940 ■ REGION MANAGEMENT INFORMATION This BD/DVD player is designed and manufactured to respond to the Region Management Information that is recorded on a BD/DVD disc. If the Region code/number described on the BD/DVD disc does not correspond to the Region code/ number of this BD/DVD player, this BD/DVD player cannot play this disc.
  • Page 6: System Composition

    BD-940 ■ SYSTEM COMPOSITION When accepting a repair order from the user, it is recommended to receive the R-840 and BD-940 as a set for the repair work. The MCR-940 consists of the R-840, BD-940 and NS-BP300. This service manual is for the BD-940. For service manual of the R-840/NS-BP300, please refer to the following publication...
  • Page 7: Front Panel

    BD-940 ■ FRONT PANEL B, G, F models Top view Front view...
  • Page 8: Rear Panels

    BD-940 ■ REAR PANELS B, G models F model...
  • Page 9: Remote Control Panel

    BD-940 ■ REMOTE CONTROL PANEL B, G, F models Key colors A. Red B. Green C. Yellow D. Blue...
  • Page 10: Specifications

    ■ Audio Section Audio Output Level (1 kHz, 0 dB) Accessories BD / DVD / CD-DA ............2.0 ±0.3 V for BD-940 Remote control ................x 1 Signal to Noise Ratio Battery (R03, AAA, UM-4) ............x 2 BD / DVD / CD-DA ........... 100 dB or more Audio pin cable (1.0 m) .............x 1...
  • Page 11 BD-940 • DIMENSIONS Top view “BONUSVIEW” is a trademark of Blu-ray Disc Association. is a trademark of DVD Format/Logo Licensing Corporation. HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC. “x.v.Color” and “x.v.Color” logo are trademarks.
  • Page 12 BD-940 • SET MENU TABLE MAIN MENU SUB-MENU PARAMETER VALUE [INITIAL VALUE] Audio Video Settings TV Aspect Ratio [Wide 16:9] / Normal 4:3 Normal 4:3 [Letter Box] / Pan Scan Component Video Out 1080i / 720p / 576/480p / [576/480i]...
  • Page 13: Internal View

    BD-940 ■ INTERNAL VIEW Rear view BD MODULE P.C.B. MAIN (4) P.C.B. POWER P.C.B. Top view MAIN (2) P.C.B. BD MECHANISM UNIT MAIN (1) P.C.B. MAIN (3) P.C.B. Front view...
  • Page 14: Service Precautions

    BD-940 ■ SERVICE PRECAUTIONS When BD module P.C.B. is replaced, the serial number and MAC address MUST be reported to Yamaha Corporation by e-mail. (Fig. 1) E-mail: ycav-keycontrol@gmx.yamaha.com ycav-keycontrol@gmx.yamaha.com ycav-keycontrol@gmx.yamaha.com Model name BD-940 Serial number xxxxxxxxx New MAC address xxxxxxxxx Send this e-mail to Yamaha Corporation Fig.
  • Page 15 1. Connect the SYSTEM CONNECTOR terminal of the BD-940 to the SYSTEM CONNECTOR terminal of the R-840 with a system control cable. (Fig. 3) 2. Connect the VIDEO OUT terminal of the BD-940 to the VIDEO IN terminal of the TV with a video pin cable. (Fig. 3) This unit (BD-940)
  • Page 16 BD-940 Communication Setup This allows you to perform and/or change the 5 Press to select “Change” , then press communication setting. This setting is required to use ENTER. BD-LIVE functions that connect to the internet. Notes Setting the info. of the Ethernet [Current Setup] •...
  • Page 17 BD-940 10 For setting the proxy server, press 13 For testing the connection to the internet, to select “Yes” or “No” , then press ENTER. after confirming the settings, press to select “Test” , then press ENTER. Do you use the proxy server? “Test”...
  • Page 18: Disassembly Procedures

    BD-940 ■ DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Top Cover 2. Removal of Front Panel Unit Remove 4 screws ( ① ) and 4 screws ( ② ). (Fig. 1) Remove 2 screws ( ③...
  • Page 19 BD-940 3. Removal of POWER and MAIN (1) P.C.B.s 4. Removal of Rear Panel Unit Remove 2 screws ( ⑥ ). (Fig. 2) Remove 3 screws ( ⑧ ). (Fig. 2) b. Remove 2 screws ( ⑦ ). (Fig. 2) b.
  • Page 20 BD-940 5. Removal of BD Mechanism Unit 6. Removal of BD Module P.C.B. Remove 4 screws ( ⑪ ). (Fig. 3) Remove 3 screws ( ⑫ ). (Fig. 3) b. Unlock and remove CN3001. (Fig. 3) b. Remove 2 screws ( ⑬ ). (Fig. 3) Unlock and remove SC3002, and ground the terminal Remove SC5601.
  • Page 21 BD-940 When checking the P.C.B.s: • Spread the rubber sheet and the cloth. Then place the front panel unit and the POWER and MAIN (1) P.C.B.s on the cloth and check it. (Fig. 5) • Connect the ground point of the front panel unit (W601) and ST1 of the POWER P.C.B. to the chassis or the rear panel with ground leads or the like.
  • Page 22: Updating Firmware

    BD-940 ■ UPDATING FIRMWARE Note) When the BD module software requires update, refer to “Software Update” on page 58. When the following parts are replaced, the firmware must be updated to the latest version. MAIN P.C.B. Microprocessor (IC204) of MAIN P.C.B.
  • Page 23 BD-940 ● Connection Press the “ ” (On/Standby) key of this unit to turn off the power and disconnect the power cable from the AC outlet. 1. Set the switch (SW7) of RS232C conversion adaptor to the “FLASH UCOM” position. (Fig. 1) 2.
  • Page 24 BD-940 ● Operation procedure 1. Connect the power cable of this unit to the AC outlet. The power to this unit is supplied and the microprocessor is in the writing mode. 2. Start up FlashSta.exe. The screen appears as shown below. (Fig. 2) 3.
  • Page 25 BD-940 5. Click [Setting], and set the baud rate. (Fig. 4) Select 115200 bps for the baud rate and 40 ms for the program intervals. Reduce the baud rate if a transmission error occurs frequently. Fig. 4 6. Click [E.P.R.], then the “Erase” screen appears. (Fig. 5) 7.
  • Page 26 BD-940 8. When writing of the firmware is completed, the screen appears as shown below. (Fig. 6) Click [OK]. (Fig. 6) 9. Click [Exit] to end FlashSta.exe. (Fig. 6) Fig. 6 10. Disconnect the power cable of this unit from the AC outlet.
  • Page 27: Self-diagnostic Function

    BD-940 ■ SELF-DIAGNOSTIC FUNCTION There are 7 main menu items, each of which has sub-menu items. Listed in the table below are main menu items and sub-menu items. MAIN MENU SUB-MENU 1 PROTECTION HISTORY 1 HISTORY 1 2 HISTORY 2...
  • Page 28 BD-940 ● Starting Self-Diagnostic Function While pressing the “ ” (Skip/Search reverse) and “ ” (Skip/Search forward) keys of this unit as shown in the figure below, press the “ ” (On/Standby) key to turn on the power. The self-diagnostic function mode is activated.
  • Page 29 BD-940 ● Details of Self-Diagnostic Function menu 1. PROTECTION HISTORY This menu is used to display the history of protection function. Example 1-1 History 1 1 1 P S   P R T   x x x A/D value when the protection function is activated.
  • Page 30 BD-940 2. AD DATA CHECK This menu is used to display the A/D conversion value of the microprocessor which detect protection function by using the sub-menu. 2 P S   A D       1 2 1 PS PRT...
  • Page 31 BD-940 5. FL DISPLAY CHECK This menu is used to check the FL display section. All segments ON 6. FIRMWARE VERSION This menu is used to display the firmware version of microprocessor (IC204 of the MAIN P.C.B.). 6 V e r   1 . 0 0 CHECKSUM This menu is used to display the checksum value of microprocessor (IC204 of the MAIN P.C.B.).
  • Page 32: Display Data

    BD-940 ■ DISPLAY DATA ● V600 : 13-ST-81GINK (MAIN P.C.B.) ● PIN CONNECTION Pin No. Connection Q13G Pin No. Connection RESET Pin No. Connection LGND PGND Note: 1) F1, F2 ..Filament 2) NP ..No pin 3) NX ..No extended pin 4) DL ..
  • Page 33: Ic Data

    BD-940 ■ IC DATA IC204: R5F21356ANFP (MAIN P.C.B.) Single chip 16-bit microprocessor I/O ports Port P0 Port P1 Port P2 Port P3 Port P4 Port P5 Port P6 Peripheral functions UART or System clock Timers generation circuit clock synchronous serial I/O...
  • Page 34 BD-940 Interrupt Function Name Control Terminal Port Timer Terminal Serial I/F A/D, D/A Comp Terminal 1 N_LED_STANDBY P5_6 TRAO 2 PC_SYS_RE_EN P3_2 (/INT1,/INT2) (TRAIO) 3 N.C. P3_0 (TRAO) 4 VREF AD-IN P4_2 VREF 5 MODE MODE 6 PC_YSS_SCL (XCIN) P4_3...
  • Page 35 BD-940 Interrupt Function Name Control Terminal Port Timer Terminal Serial I/F A/D, D/A Comp Terminal 39 KEY_SKIP_RWD P0_7 (TRCIOC) AN0,DA1 40 KEY_SKIP_FWD P0_6 (TRCIOD) AN1,DA0 41 KEY_STOP P0_5 (TRCIOB) 42 N.C. P0_4 (TRCIOB,TREO) 43 MAIN_P_CON P0_3 (TRCIOB) (CLK1) (TRCIOA, 44 PS_DET...
  • Page 36: Pin Connection Diagrams

    BD-940 ■ PIN CONNECTION DIAGRAMS • ICs BD5242G L6566BTR LME49723MAX/NOPB MM1757DHBE NJM431U R5F21356ANFP TC74VHC08F TC7W14F 1: REFERENCE 2: ANODE 3: CATHODE • Diodes 1SS355 D1NL20U-5083 HZU4.7B1 TRF-E D1NL40-7083 HZU5.6B2 TRF-E HZU6.8B2 TRF-E HZU7.5B1 TRF-E Anode Anode HZU8.2B2 TRF-E Anode HZU8.2B3 TRF-E...
  • Page 37 BD-940 • Transistors 2SA1037K 2SA1708 2SB1260 2SC2412K 2SC4488 2SD1664 1: Base/IN/Gate 2: Collector/OUT/Source 3: Emitter/GND/Drain 2SD1858 2SD1938F 2SK3532-01MR DTA124EUAT106 DTA144EKA DTC114EKA DTC124EUAT106 DTC144EKA 1: GND 2: IN 3: OUT...
  • Page 38 BD-940 MEMO...
  • Page 39: Block Diagram

    BD-940 ■ BLOCK DIAGRAM BACK SKIP FWD SKIP SW600 SW605 V600 PLAY/PAUSE STOP SW601 SW602 BD Module P.C.B. MAIN (3) → STAND BY OP/CL SCHEMATIC DIAGRAM SW603 SW604 CB600 CB200 FL POWER SUPPLY FROM CB3 BD Mechanism Unit IC204 AT_12V...
  • Page 40: Printed Circuit Boards

    BD-940 ■ PRINTED CIRCUIT BOARDS POWER (CB3) VIDEO AUDIO MAIN (1) P.C.B. MAIN (2) P.C.B. (Side A) (Side A) COMPONENT DIGITAL SYSTEM Y/VIDEO CONNECTOR OPTICAL TO:RECEIVER Writing port CB801 PJ400 JK800 BD module P.C.B. CB203 AT_12V AT_12V D_GND DC FAN...
  • Page 41 BD-940 MAIN (1) P.C.B. MAIN (2) P.C.B. (Side B) (Side B) IC800 IC402 IC401 • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location D200 D400 IC800 Q209 Q404 D201 D401 Q200...
  • Page 42 BD-940 MAIN (3) P.C.B. MAIN (4) P.C.B. (Side A) (Side A) MAIN (2) (CB400) CB901 CB900 BD module P.C.B. FLGND FLGND +30V FL_CS5 FL_DATA5 FL_CLK5 To chassis FL_RST5 DGND N_LED_STANDBY SW604 LED_QUICK_START KEY_STBY KEY_RWD KEY_OPEN_CLOSE KEY_PLAY/PAUSE KEY_FWD KEY_STOP W601 MAIN (1)
  • Page 43 BD-940 MAIN (3) P.C.B. MAIN (4) P.C.B. (Side B) (Side B) IC600 • Semiconductor Location Ref no. Location D601 D603 D604 IC600 Q600 Q603 Q606 Q608...
  • Page 44 BD-940 POWER P.C.B. POWER P.C.B. (Side A) (Side B) AC IN • Semiconductor Location Ref no. Location MAIN (1) (CB203)
  • Page 45: Schematic Diagrams

    BD-940 SCHEMATIC DIAGRAMS MAIN 1/3 Page 46 to MAIN (2)_CB800 Page 46 To BD module P.C.B. To BD module P.C.B. to MAIN (2)_CB803 MAIN (1) 11.4 11.4 11.4 CB203 37.0 12.3 12.3 12.3 30.1 37.0 30.7 -12.8 37.0 12.3 12.3 30.7...
  • Page 46 BD-940 MAIN 2/3 IC800: TC74VHC08F CB802 CB803 Page 45 Quad 2-input AND gate To DC FAN to MAIN (1)_W200 IC800 JK800 SYSTEM CONNECTOR IC800 TO: RECEIVER IC800 IC800 IC800 IC402: MM1757DHBE 75-ohms x 2 driver for HD (built-in LPF SW for SD/HD)
  • Page 47 BD-940 MAIN 3/3 MAIN (3) IC600: TC7W14F Schmitt inverter V CC 30.0 IC600 IC600 30.0 IC600 IC600 30.0 Page 45 to MAIN (1)_CB200 CB600 To chassis IC602 W601 IC602 QUICK indicator IC602 CB900 CB901 To BD module P.C.B. Page 46 to MAIN (2)_CB400 -0.4...
  • Page 48 BD-940 POWER 36.2 (111.6) 14.8 (319.5) AC IN 12.2 (319.5) (111.4) (448.2) 36.2 12.2 12.2 (448.2) 12.2 Page 45 POWER to MAIN (1)_CB203 (319.2) TRANSFORMER -12.5 (319.2) -12.2 (1.1) (1.1) (1.1) (0.2) (0.3) (5.0) (14.9) (1.1) (14.9) (0.2) (14.9) (1.1) (0.3)
  • Page 49: Replacement Parts List

    BD-940 ■ REPLACEMENT PARTS LIST • ELECTRICAL COMPONENT PARTS WARNING ● Components having special characteristics are marked ⚠ and must be replaced with parts having specifications equal to those originally installed. ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS: C.A.EL.CHP : CHIP ALUMI.ELECTROLYTIC CAP L.EMIT...
  • Page 50 BD-940 P.C.B. MAIN Ref No. Part No. Description Markets Ref No. Part No. Description Markets WS562200 P.C.B. MAIN C436-437 WE102100 C.PP 2200pF 100V J CB200 VQ047500 CN.BS.PIN C438 US064100 C.CE.CHP 0.01uF 50V B CB201 VM688900 CN.BS.PIN C441 UU237100 C.EL 10uF CB202 VB390800 CN.BS.PIN...
  • Page 51 BD-940 P.C.B. MAIN and P.C.B. POWER Carbon Resistors Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No. Ref No. Part No. Description Markets Ref No. Part No. Description Markets 1.0 Ω...
  • Page 52 BD-940 • OVERALL ASS'Y 2-11 2-2-1 2-11 6 (2) 2-61 2-52 2-2-2 2-61 2-60 2-50 1-11 2-50 1-11 2-2-2-1 2-2-2-2 6 (3) 2-12 2-12 2-51 2-21 6 (4) 2-12 1-21 200-1...
  • Page 53 * 1-2 WS092700 FRONT PANEL VQ368600 PUSH RIVET P3555-B * 1-2 WS092600 FRONT PANEL * 1-3 WS060000 SHEET WINDOW ACCESSORIES for BD-940 * 1-4 WS080000 SUB PANEL * 200 WS408600 REMOTE CONTROL 000-213200130 * 1-4 WS079900 SUB PANEL 200-1 AAX82380...
  • Page 54: Remote Control

    BD-940 ■ REMOTE CONTROL SCHEMATIC DIAGRAM PANEL KEY LAYOUT KEY CODE (B, G, F models) These PADs are test point for ISP in the production line. Key No. Key Name Category Code System 78-0F Disc 78-00 MENU iPod 7F01-0FF0 iPod...
  • Page 55: System Connector

    BD-940 ■ SYSTEM CONNECTOR ● Connection Connect the SYSTEM CONNECTOR (TO: PLAYER) of the R-840 to the SYSTEM CONNECTOR (TO: RECEIVER) of the BD-940 with the system control cable. System control cable Receiver (R-840) Player (BD-940) ● Specifications SYSTEM CONNECTOR...
  • Page 56 BD-940 ● Operation Example User RECEIVER PLAYER AC OFF AC OFF AC connect AC connect Reset Start Reset Start Communication permission (Low -> Hi) Communication permission (Low -> Hi) Communication start Acknowledgement State notification Acknowledgement Mode setting (STANDBY) Acknowledgement Remote control " " (On/Standby) Key...
  • Page 57: Settings

    BD-940 ■ SETTINGS The “Menu” enables various audio/visual settings and adjustments on the functions using the remote control unit. Menu/Sub-menu Function Communication Setup Changes the communication settings. Version Displays the system software version. Software Update Updates the software of this Player.
  • Page 58 BD-940 ● Communication Setup Press D (Complete) to fix the numbers which The operation procedure for inputting have been input. characters manually Note IP Address Numeric characters such as IP address can be Netmask entered on the input screen either by selecting each Gateway of the characters in the “Numeric”...
  • Page 59 BD-940 ⑤ Enter the 4-digit number using 0-9. ⑧ Press ENTER to start updating. – The screen becomes dark for a while until the update screen can be displayed. Please wait for Enter 4-digit password the update screen to appear. Do not unplug the power cable.
  • Page 60 BD-940...

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