Yamaha RX-V681 Service Manual
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Yamaha RX-V681 Service Manual

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RX-V681/RX-A760
Note:
When the DIGITAL P.C.B. or IC82 on DIGITAL (1) P.C.B. is replaced, this unit will display "Internal Error" and will not
operate properly. The model name MUST be written to the backup IC (EEPROM: IC82 on DIGITAL (1) P.C.B.) to
have proper operation. (For detailed procedure, refer to related Service News or Service Bulletin. Or contact your
local Yamaha representative.)
■ CONTENTS
TO SERVICE PERSONNEL ........................................... 2
FRONT PANELS ............................................................ 3
REAR PANELS .............................................................. 4
REMOTE CONTROL PANEL ....................................... 10
SPECIFICATIONS ........................................................ 11
INTERNAL VIEW ......................................................... 15
SERVICE PRECAUTIONS ........................................... 16
DISASSEMBLY PROCEDURES .................................. 17
UPDATING FIRMWARE ............................................... 27
SELF-DIAGNOSTIC FUNCTION ................................. 30
POWER AMPLIFIER ADJUSTMENT .......................... 72
1 0 1 3 6 7
AV RECEIVER
SERVICE MANUAL
DISPLAY DATA ............................................................ 73
IC DATA ........................................................................ 75
BLOCK DIAGRAMS .................................................... 83
WIRING DIAGRAM ...................................................... 87
PRINTED CIRCUIT BOARDS ...................................... 88
PIN CONNECTION DIAGRAMS ................................ 110
SCHEMATIC DIAGRAMS .......................................... 111
REPLACEMENT PARTS LIST ................................... 127
REMOTE CONTROL .................................................. 156
FIRMWARE UPDATING PROCEDURE ..................... 158
'16.05

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Summary of Contents for Yamaha RX-V681

  • Page 1: Table Of Contents

    The model name MUST be written to the backup IC (EEPROM: IC82 on DIGITAL (1) P.C.B.) to have proper operation. (For detailed procedure, refer to related Service News or Service Bulletin. Or contact your local Yamaha representative.) ■ CONTENTS TO SERVICE PERSONNEL ...........

  • Page 2: To Service Personnel

    RX-V681/RX-A760 ■ TO SERVICE PERSONNEL AC LEAKAGE WALL EQUIPMENT TESTER OR 1. Critical Components Information 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: Front Panels

    RX-V681/RX-A760 ■ FRONT PANELS RX-V681 RX-A760...

  • Page 4: Rear Panels

    RX-V681/RX-A760 ■ REAR PANELS RX-V681 (U, C models) RX-V681 (R model) RX-V681 (S model)
  • Page 5 RX-V681/RX-A760 RX-V681 (T model) RX-V681 (A model) RX-V681 (B, G models)
  • Page 6 RX-V681/RX-A760 RX-V681 (F model) RX-V681 (L model) RX-V681 (H model)
  • Page 7 RX-V681/RX-A760 RX-V681 (V model) RX-A760 (U, C models) RX-A760 (R model)
  • Page 8 RX-V681/RX-A760 RX-A760 (T model) RX-A760 (A model) RX-A760 (G, F models)
  • Page 9 RX-V681/RX-A760 RX-A760 (L model)

  • Page 10: Remote Control Panel

    RX-V681/RX-A760 ■ REMOTE CONTROL PANEL RAV537 Remote control sheet (T model)

  • Page 11: Specifications

    RX-V681/RX-A760 ■ SPECIFICATIONS Total Harmonic Distortion ■ Audio Section (20 Hz to 20 kHz, 10 V) Rated Output Power (Power Amp. Section) PHONO (MM) to FRONT SP OUT ........ 0.02 % or less (1 kHz, 0.9 % THD) (20 Hz to 20 kHz, 50 W/8 ohms) – 1 channel driven –...
  • Page 12 RX-V681/RX-A760 Maximum Power Consumption [R, L, V, S, H models] ■ FM Section ....................590 W Tuning Range Dimension (W x H x D) U, C models ............87.5 to 107.9 MHz [RX-V681] R, L, V, S, H models ....87.5 to 108.0 / 87.50 to 108.00 MHz ......435 x 171 x 378 mm (17-1/8" x 6-3/4" x 14-7/8") T, A, B, G, F models ...........87.50 to 108.00 MHz [RX-A760] 50 dB Quieting Sensitivity (IHF) (1 kHz, 100 % MOD.)
  • Page 13 License is distributed on an “AS IS” BASIS, The Bluetooth® word mark and logos are registered trademarks owned by WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express Bluetooth SIG, Inc. and any use of such marks by Yamaha Corporation is or implied. under license.
  • Page 14 RX-V681/RX-A760 • DIMENSIONS RX-V681 RX-A760 Top view Top view Ø 60 Ø 60 Ø 48/18 222.5 (8-3/4") 212.5 (8-3/8") 335 (13-1/4") 335 (13-1/4") (2") (2") Front view Front view 435 (17-1/8") 435 (17-1/8") Unit: mm (inch) Unit: mm (inch)

  • Page 15: Internal View

    RX-V681/RX-A760 ■ INTERNAL VIEW RX-V681 Top view a OPERATION (3) P.C.B. b MAIN (2) P.C.B. (R, V, S models) c OPERATION (8) P.C.B. d Network Module e DIGITAL (1) P.C.B. f AM/FM TUNER g OPERATION (2) P.C.B. h OPERATION (9) P.C.B.

  • Page 16: Service Precautions

    RX-V681/RX-A760 RX-A760 Top view a OPERATION (3) P.C.B. b OPERATION (8) P.C.B. c Network Module d DIGITAL (1) P.C.B. e AM/FM TUNER f OPERATION (2) P.C.B. g OPERATION (9) P.C.B. h OPERATION (4) P.C.B. i MAIN (5) P.C.B. j MAIN (4) P.C.B.

  • Page 17: Disassembly Procedures

    RX-V681/RX-A760 ■ DISASSEMBLY PROCEDURES RX-V681 (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Top Cover a. Remove 4 screws (1) and 5 screws (2). (Fig. 1) b. Lift the rear side of the top cover to remove it. (Fig. 1) 2.
  • Page 18 RX-V681/RX-A760 3. Removal of Network Module a. The Wireless LAN Antenna Connector is removed by using MHF Connector Remover. (Fig. 2) b. Remove a screw (4). (Fig. 2) c. Remove the Network Module to upward. ④ Network module Wireless LAN Antenna Connector Fig.
  • Page 19 RX-V681/RX-A760 4. Removal of DIGITAL (1) P.C.B. 5. Removal of AMP Unit and Power Transformer a. Remove screw (4) and 6 screws (5). (Fig. 5) a. Remove screw (7), 3 screws (8), 4 screws (9) and 4 screws (j). (Fig. 4) b.
  • Page 20 RX-V681/RX-A760 When checking the DIGITAL (1) P.C.B.: • Put the rubber sheet and cloth over this unit, and place the DIGITAL (1) P.C.B. on them. (Fig. 6) • Connect ST953 on DIGITAL (1) P.C.B. to the chassis with a ground lead. (Fig. 6) •...
  • Page 21 RX-V681/RX-A760 When checking the MAIN (1) P.C.B.: • Place the P.C.B.s (with rear panel) upright. (Fig. 7) • Connect the heatsink and rear panel to the chassis with a ground lead or the like. (Fig. 7) • Reconnect all cables (connectors) that have been disconnected.
  • Page 22 RX-V681/RX-A760 RX-A760 (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Top Cover a. Remove 4 screws (1), 5 screws (2) and screw (3). (Fig. 1) b. Lift the rear side of the top cover to remove it. (Fig. 1) 2.
  • Page 23 RX-V681/RX-A760 3. Removal of Network Module a. The Wireless LAN Antenna Connector is removed by using MHF Connector Remover. (Fig. 2) b. Remove screw (4). (Fig. 2) c. Remove the Network Module to upward. ④ Network module Wireless LAN Antenna Connector Fig.
  • Page 24 RX-V681/RX-A760 4. Removal of DIGITAL (1) P.C.B. 5. Removal of AMP Unit and Power Transformer a. Remove screw (6) and 6 screws (7). (Fig. 5) a. Remove screw (9), 2 screws (j), 3 screws (k) and 4 screws (l). (Fig. 4) b.
  • Page 25 RX-V681/RX-A760 When checking the DIGITAL (1) P.C.B.: • Put the rubber sheet and cloth over this unit, and place the DIGITAL (1) P.C.B. on them. (Fig. 6) • Connect ST953 on DIGITAL (1) P.C.B. to the chassis with a ground lead. (Fig. 6) •...
  • Page 26 RX-V681/RX-A760 When checking the MAIN (1) P.C.B.: • Place the P.C.B.s (with rear panel) upright. (Fig. 7) • Connect the heatsink and rear panel to the chassis with a ground lead or the like. (Fig. 7) • Reconnect all cables (connectors) that have been disconnected.

  • Page 27: Updating Firmware

    RX-V681/RX-A760 ■ UPDATING FIRMWARE When the following parts are replaced, the firmware must be updated to the latest version. DIGITAL P.C.B. FPGA Flash ROM: IC86 on DIGITAL (1) P.C.B. DSP1 Flash ROM: IC926 on DIGITAL (1) P.C.B. DSP2 Flash ROM: IC930 on DIGITAL (1) P.C.B.
  • Page 28 RX-V681/RX-A760 ● Operation Procedures 1. Insert the USB storage device to the USB jack. (Fig. 1) 2. While pressing the “PURE DIRECT” key, connect the power cable to the AC outlet. (Fig. 1) "MAIN ZONE " key "PURE DIRECT" key...
  • Page 29 RX-V681/RX-A760 List of Error Messages When writing fails, “ERROR! XXXXXX” is displayed on the front panel display. “XXXXXX” is a HEX value, and each bit represents as follows: Display ERROR! xxxxxx Error number Error Message Display Binary 000001 0 bit...

  • Page 30: Self-Diagnostic Function

    RX-V681/RX-A760 ■ SELF-DIAGNOSTIC FUNCTION This unit has self-diagnostic functions that are intended for inspection, measurement and location of faulty point. Each item has a main menu, each of which has sub-menu items. Listed in the table below are main menu items and sub-menu items.
  • Page 31 RX-V681/RX-A760 Main menu Sub-menu Z: Zone system ZONE TEST (Not for service) (Not for service) (Not for service) (Not for service) AUDIO1 AUDIO2 V-AUX (Not for service) 10 PHONO (Not for service) U: Universal system USB FRONT 1 TRACK USB FRONT 2 TRACK...
  • Page 32 RX-V681/RX-A760 Main menu Sub-menu C: Communication system DIGITAL PCB CHECK BUS FLASH ROM BUS FPGA FPGA RAM DIR BUS DSP BUS EEPROM INVALID ITEM (Not for service) 10 INVALID ITEM (Not for service) 11 INVALID ITEM (Not for service) NETWORK MICROPROCESSOR CHECK...
  • Page 33 RX-V681/RX-A760 Main menu Sub-menu INTERNAL INFOMATION DSP INFORMATION BU ERROR (Not for service) NRC (Net Restart Counter) (Not for service) INVALID ITEM (Not for service) INVALID ITEM (Not for service) P: Power and protection system SYSTEM MONITOR OUTPUT LEVEL LIMITER CONTROL...
  • Page 34 RX-V681/RX-A760 ● Starting Self-Diagnostic Function While pressing the “TONE CONTROL” and “INFO” keys, press the “MAIN ZONE z” key to turn on the power, and release those 2 keys. The self-diagnostic function mode is activated. Keys of this unit RX-V681 While pressing these keys, turn on the power.
  • Page 35 RX-V681/RX-A760 ● Canceling Self-Diagnostic Function Before canceling self-diagnostic function, execute setting for “S3. FACTORY PRESET” menu. (Memory initialization in- hibited or Memory initialized). * In order to keep the user memory preserved, be sure to select PRESET INHIBIT (Memory initialization inhibited).
  • Page 36 RX-V681/RX-A760 2-2. When the protection function worked due to abnormal DC output. DC PRT:xxx xxx: A/D conversion value of voltage at the moment when the protection function worked (Reference voltage: 3.3 V=255) Cause: DC output of the power amplifier is abnormal.
  • Page 37 RX-V681/RX-A760 2-4. When the protection function worked due to excessive heatsink / bridge diode (D1040) temperature. TMPxPRT:xxx xxx: A/D conversion value of voltage at the moment when the protection function worked (Reference voltage: 3.3 V=255) TMP1/TMP3 Cause: The temperature of the heatsink / bridge diode (D1040) is excessive.
  • Page 38 RX-V681/RX-A760 ● Operation procedure of Main menu and Sub-menu Each item has a main menu, each of which has sub-menu items. Main menu selection Select the main menu using “SCENE TV” (forward) and “SCENE BD/DVD” (reverse) keys. Sub-menu selection Select the sub-menu using “SCENE RADIO” (forward) and “SCENE NET” (reverse) keys.
  • Page 39 RX-V681/RX-A760 ● Details of Self-Diagnostic Function menu A1. DSP AUDIO This menu is used to check audio signal route via DSP. A1-1. DSP THROUGH The audio signal is output including the head margin via DSP. * When input source is stereo, signal is assigned as below.
  • Page 40 RX-V681/RX-A760 A2-2. DIRECT VL The analog input audio signal is output to FRONT L/R in PURE DIRECT mode. VL: Voltage Low, RY101 on MAIN (1) P.C.B.: On * RY101: Power amp power voltage H/L switching relay A2-2 DIRECT :VL MAIN (1) P.C.B. RY101 peripheral schematic diagram...
  • Page 41 RX-V681/RX-A760 A3. HDMI AUDIO This menu is used to check the route of audio signal input to HDMI IN/OUT jack. * Before check using “A3-3. ARC 1” menu, be sure to connect a TV monitor equipped with Audio Return Channel function to this unit in advance.
  • Page 42 RX-V681/RX-A760 A4. AUDIO ROUTE CHECK This menu is used to check the speaker output. A4-1. BI-AMP A4-1 BI-AMP The FRONT L/R signal is distributed to SURROUND BACK L/R terminals. A4-2. Z-DSP THOUGH A4-2 Z-DSP THROUGH The audio signal is output to FRONT L/R, CENTER, SURROUND L/R and ZONE2 L/R terminals.
  • Page 43 RX-V681/RX-A760 A4-13 Z2 ADT D & 23 A4-14. DISTRO DAAD A4-14 M2 ADT DAAD The following audio routes are checked. DIR (IC942) → Last-DSP Down mix (IC931) → SB DAC (IC485) → VOLUME IC (IC157) → ADC (DIR) (IC942) → SELECTOR (IC946) → CB952 → NET (loop back) → Buffer (IC952) →...
  • Page 44 RX-V681/RX-A760 A7-5. TEST SURROUND R A7-5 TEST SURR R The test tone is output to SURROUND R channel. A7-6. TEST SURROUND BACK R A7-6 TEST SB R The test tone is output to SURROUND BACK R channel. A7-7. TEST SURROUND BACK L...
  • Page 45 RX-V681/RX-A760 D1. FL CHECK This menu is used to check operation of the FL display. FL display D1-1. INITIAL DISPLAY D1-2. ALL SEGMENT OFF D1-3. ALL SEGMENT ON * After check, change to next menu at once. If you turn ON all segments for a long period, it may cause trouble.
  • Page 46 RX-V681/RX-A760 Z1. ZONE TEST This menu is used to check the ZONE 2 ZONE OUT (PRE OUT). The audio signal is not output to ZONE 2 SPEAKER OUT. Z1-1. AV1 Z1-1 Not for service. Z1-2. AV2 Z1-2 Not for service.
  • Page 47 RX-V681/RX-A760 U1. USB This menu is used to check the audio signal route from USB storage device. U1-1. USB FRONT 1 TRACK The 1st music file stored in the USB storage device connected to the USB jack is reproduced. * Copy 2 or more music files from PC to the root folder of the USB storage device in advance.
  • Page 48 RX-V681/RX-A760 N1-5. LINE NOISE 10 MDI Not for service. N1-5 LN MDI 10 N1-6. LINE NOISE 10 MDIX Not for service. N1-6 LN MDIX 10 N1-7. LINK CHECK This menu is used to check LINK. N1-7 LINK CHK:OK OK: Normal...
  • Page 49 RX-V681/RX-A760 N2. WIFI Not for service. N2-1 N2-11 WIFI ON JIG01 WIFI OFF N2-12 209148xxxxxx N2-13 WIFI RF TEST N3. BLUETOOTH This menu is used to display BLUETOOTH information and check playback. N3-1. BLUETOOTH ADDRESS BLUETOOTH address is displayed. N3-1 2091488xxxxx N4.
  • Page 50 RX-V681/RX-A760 N5. NETWORK MODULE CONNECT CHECK This menu is used to check the connection between Network Microprocessor (N) and Main Microprocessor (M). N5-1. SPI SPI (Serial Peripheral Interface) connection between Network Microprocessor (N) and Main Microprocessor (M) is checked. N5-1...
  • Page 51 RX-V681/RX-A760 C1-5. FPGA RAM SDRAM (IC53)ʼs reading/writing are checked C1-5 FPGA_RAM:OK OK: No error detected NG: An error is detected C1-6. DIR BUS Communication and bus line connection between microprocessor (IC90) and DIR (IC942) are checked. C1-6 DIR B:OK OK: No error detected NG: An error is detected C1-7.
  • Page 52 RX-V681/RX-A760 C2. NETWORK MICROPROCESSOR CHECK This menu is used to check the communication and bus line connection between devices and Network Microproces- sor on Network Module. C2-1. ALL The synthetic judgment result of sub-menu C2-2 to C2-8 is displayed. C2-1...
  • Page 53 RX-V681/RX-A760 C2-6. PMIC Access of power supply (PMIC) on Network Module connected to Network Microprocessor is checked. C2-6 PMIC:OK OK: No error detected NG: An error is detected Checking C2-7. NET EEPROM EEPROM on Network Module is checked and the result is displayed.
  • Page 54 RX-V681/RX-A760 V1. ANALOG VIDEO CHECK This menu is used to check the analog video signal route. V1-1. ANALOG BYPASS The video signal is converted and output as shown below. V1-1 ANALOG BYPASS ANALOG BYPASS HDMI IN HDMI OUT DIGITAL DIGITAL...
  • Page 55 RX-V681/RX-A760 V1-3. MUTE CHECK The video signal is converted and output as shown below. V1-3 MUTE CHECK MUTE CHECK HDMI IN HDMI OUT DIGITAL DIGITAL DIGITAL IC50 RxTx RxTx FPGA DIGITAL Component In Component Out IC21 MUTE VIDEO VDEC_N_RST Decoder...
  • Page 56 RX-V681/RX-A760 V2. DIGITAL VIDEO CHECK This menu is used to check the digital video signal route. V2-1. HDMI REPEAT The video/audio signals input to HDMI IN jack are output to HDMI OUT jack. V2-1 HDMI REPEAT -- The Deep Color video signals is input, “30” bit or “36” bit is displayed.
  • Page 57 RX-V681/RX-A760 V2-2. HDMI SCALING The video / audio signals input to HDMI IN jack are output to HDMI OUT jack via FPGA Scaling. HDMI video output up-scaling: INPUT 1080i@60Hz, OUTPUT 1080p@60Hz * If the input video signal is other than 1080i@60Hz, upscaling cannot be done.
  • Page 58 RX-V681/RX-A760 V2-4. DIGITAL COMPONENT The component video (Y, Cb, Cr) signal is converted and output as shown below. V2-4 DIGITAL Cmp HDMI CB421 HDMI IN Front HDMI HDMI HDMI HDMI HDMI HDMI IC423 HDMI EQUALIZER Sii9587CNUC-3 Component video output COMPONENT...
  • Page 59 RX-V681/RX-A760 V2-6. GUI (Graphical User Interface)-VIDEO OUT The GUI is output from FPGA (IC50 on DIGITAL P.C.B.). V2-6 GUI-VIDEO OUT HDMI CB421 HDMI IN Front HDMI HDMI HDMI HDMI HDMI HDMI IC423 HDMI EQUALIZER Sii9587CNUC-3 HDMI HDMI SWITCHER RECEIVER/TRANSMITTER Sii9589-3CTUC...
  • Page 60 RX-V681/RX-A760 R1. INVALID ITEM Not for service. R1-1 R1-2 INVALID ITEM INVALID ITEM T1. TROUBLE SHOOTING INFORMATION This menu is used to display the operating time and operation frequency of this unit. * The operating time and operation frequency during the self-diagnostic function mode will not be stored.
  • Page 61 RX-V681/RX-A760 T2. USAGE ENVIRONMENT This menu is used to display the maximum level of the MAIN ZONE / ZONE 2 volume and the maximum value of the detected heatsink temperature when this unit is operated. * The maximum level of the MAIN ZONE / ZONE 2 volume and the maximum value of the detected heatsink tempera- ture during the self-diagnostic function mode will not be stored.
  • Page 62 RX-V681/RX-A760 T3. EXTERNAL EVENT This menu is used to display the history of key operation. * No matter how many times the same key is pressed, it will be stored only once as its history. * The key operation during the self-diagnostic function mode will not be stored.
  • Page 63 RX-V681/RX-A760 List of key operation Display Key name Key number AD value 1 AD value 2 AD value 3 MAIN ZONE z 0205 B2 – C5 ZONE 2 0208 60 – 76 0300 37 – 4B SCENE 1 (BD/DVD) SCENE 2 (TV) 0301 21 –...
  • Page 64 RX-V681/RX-A760 T4. INTERNAL INFORMATION T4-1. DSP INFORMATION This menu is used to display the DSP information stored in memory as backup data before rebooting. The DSP information will be erased by pressing the ʻSTRAIGHT “ key. T4-1 --: Not stored...
  • Page 65 RX-V681/RX-A760 P1. SYSTEM MONITOR This menu is used to display the A/D conversion value of the microprocessor which detects panel keys and protection functions by using the sub-menu. When “P1-6. KEY” sub-menu is selected, keys become inoperable due to detection of the values of all keys.
  • Page 66 RX-V681/RX-A760 P1-3. TMP TMP1: Temperature of the heatsink (TMP) is detected. The voltage at 1 pin (THM1) of IC78 is displayed. TMP3: Temperature of bridge duide (TMP) is detected. The voltage at 5 pin (THM3) of IC76 is displayed. Normal value...
  • Page 67 RX-V681/RX-A760 P1-6. KEY Panel key is detected. When the A/D conversion value of the panel key becomes out of the specified range, normal operation will not be available. In that case, check the constant of voltage dividing resistor, solder condition, etc. Refer to table.
  • Page 68 RX-V681/RX-A760 P2. PROTECTION HISTORY This menu is used to display the history of protection function. All history of protection function will be erased by pressing the “STRAIGHT” key. * Numeric values in the figure are given as reference only. P2-1 2-1.
  • Page 69 The model name and destination of this unit are displayed. S2-1. MODEL The model name of this unit is displayed. S2-1 MDL:V681 Not for service Model name V681 : RX-V681 A760 : RX-A760 S2-2. DESTINATION The destination of this unit is displayed. S2-2 DEST:U Not for service Destination S3.
  • Page 70 RX-V681/RX-A760 S4. ROM VERSION/CHECKSUM The firmware version and checksum values are displayed. The checksum is obtained by adding the data at every 8-bit and expressing the result as a hexadecimal notation. * Numeric values in the figure are given as reference only.
  • Page 71 RX-V681/RX-A760 S4-13. INVALID ITEM S4-13 INVALID ITEM Not for service. S4-14. INVALID ITEM S4-14 INVALID ITEM Not for service. S4-15. FPGA GUI VERSION S4-15 FPGA-G-V. 17 The firmware version of GUI section in FPGA (IC50 on DIGITAL (1) P.C.B.) is displayed.

  • Page 72: Power Amplifier Adjustment

    RX-V681/RX-A760 ■ POWER AMPLIFIER ADJUSTMENT 1. Right after power is turned on, confirm that the voltage across the terminals of R1152 (CENTER), R1154 (SURROUND Rch), R1150 (FRONT Lch), R1148 (SURROUND BACK Lch), R1149 (SURROUND BACK Rch), R1153 (SURROUND Lch) and R1151 (FRONT Rch) are within the confines of 0.1 mV to 10 mV.

  • Page 73: Display Data

    RX-V681/RX-A760 ■ DISPLAY DATA ● V301 : 020MT008GNK (OPERATION P.C.B.) — PATTERN AREA ● PIN CONNECTION Pin No. 69 68 67 66 65 67 65 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35...
  • Page 74 RX-V681/RX-A760 ● ANODE CONNECTION 1G-14G col1 col1 col1 col2 col2 col2 – – – – – – – – – – – – – – – – – – – – – – – – – – – – –...

  • Page 75: Ic Data

    RX-V681/RX-A760 ■ IC DATA IC90: TMPM462F15FG (DIGITAL (1) P.C.B.) Microprocessor * No replacement part available. Cortex-M4F FLASH NVIC BOOT Backup µDMA 1.5MB Debug 192KB (unit A,B,C) 1.0MB AHB-Lite AHB Lite (max 120MHz) AHB to IO AHB to APB Bridge Bridge...
  • Page 76 RX-V681/RX-A760 Related Power Supply Port Name Function Name Detail of Function PM3/SC8TXD NCPU_SPI_MOSI NCPU_PON Network CPU SPI transmission data (Insurance) PM4/SC8RXD NCPU_SPI_MISO NCPU_PON Network CPU SPI reception data PM5/SC8SCK/SC8CTS/TBEIN0 NCPU_SPI_SCK NCPU_PON Network CPU SPI communication clock DVDD3 DVDD3 DVSS DVSS...
  • Page 77 RX-V681/RX-A760 Related Power Supply Port Name Function Name Detail of Function MODE MODE RESET RESET PM11/SC5SCK/SC5CTS/TBEOUT MIC_N_DET DSP_PON Microphone detect PM12/SC6TXD EX_MOSI FL/EEPROM transmission data PM13/SC6RXD EEP_MISO EEPROM reception data PM14/SC6SCK/SC6CTS/TBFOUT EX_SCK FL/EEPROM communication clock PF3/SC0TXD 232C_DBG_MOSI Debug / Flash write...
  • Page 78 RX-V681/RX-A760 Related Power Supply Port Name Function Name Detail of Function PH4/AIN4 AD2_COM +3.3S_PON AD selector 2 COM input PH5/AIN5 VOL_RB Volume B PH6/AIN6 VOL_RA Volume A PH7/AIN7 ISEL_RB Input selector B PH8/AIN8 ISEL_RA Input selector A 100 PH9/AIN9 DIR1_N_CS...
  • Page 79 RX-V681/RX-A760 Related Power Supply Port Name Function Name Detail of Function 144 PB6/A14/UT1CTS A[14] External bus 145 PB7/A15/UT1RTS A[15] External bus 146 DVDD3 DVDD3 147 DVSS DVSS Sleep system power supply control （Insurance assign for 148 PB8/UT1TXD/UT1IROUT +3.3MS_PON Micro-compressor） 149 PB9/UT1RXD/UT1IRIN...
  • Page 80 (3.3 V=255) INPUT > INPUT < MAIN ZONE z TONE KEY1 (power) CONTROL (RX-V681 model) 0 Ω + 1.0 k Ω + 1.0 k Ω + 1.5 k Ω + 1.8 k Ω + 2.2 k Ω Detected voltage value 0 –...
  • Page 81 RX-V681/RX-A760 • Microprocessor extended port IC76, 78: SN74LV4051APWR (DIGITAL (1) P.C.B.) 8-channel analog multiplexers/demultiplexers INPUTS CHANNEL None IC76 Related Power Supply Port Name Function Name Detail of Function PS1_PRT +3.3S_PON Power Supply protection 1 PS2_PRT +3.3S_PON Power Supply protection 2...
  • Page 82 RX-V681/RX-A760 IC79, 81: TC74VHC273FT (EL,K) (DIGITAL (1) P.C.B.) Octal D-type flip-flop with clear 20 V CC CK Q CK Q CK Q CK Q CK Q CK Q CK Q CK Q Inputs Output Function Clear − − No Change...

  • Page 83: Block Diagrams

    RX-V681/RX-A760 ■ BLOCK DIAGRAMS AUDIO Section Block Diagram AV1_D IC946 SPDIF Selector AV2_D I2S / DSD NET_ADT_I2S Other Digital signal TC74VHC157 AV3_D IC486 Analog Distribution Control AV4_D PCM5101A IC942 SPDIF Network Module Selector PCM9211 AV1_D NET_ADT_I2S Network AV2_D Microprocessor AV3_D...
  • Page 84 RX-V681/RX-A760 FRONT IN DIGITAL P.C.B. Section Block Diagram • See page 112 → DIGITAL (2) SCHEMATIC DIAGRAM HDMI PP DIGITAL (2) Front USB Sil9587-3 IC423 Ethernet OUT1 USB_DP/DM HDMI PP TX/RX Apple HDMI TRX Sil9589-3 Authentication 72, 73 MN864787 HDMI_SCL/SDA...
  • Page 85 RX-V681/RX-A760 VIDEO Section Block Diagram V-AUX IC423 HDMI PP SII9587-3 HDMI SWITCH SII9589-3 HRX_DE HRX_VS AD_CVBS HRX_HS AIN1 HRX_CLK HRX_Y[0:7] AIN3 HRX_C[0:7] IC21 IC50 AIN2 DEOUT VIDEO Dec AD_Pr FPGA VSYNCOUT AIN5 ADV7180 HDMI IN EP4CE15F17C6N HSYNCOUT PCLKOUT AD_Pb AIN4...
  • Page 86 RX-V681/RX-A760 Power Supply Section Block Diagram SP Impedance relay POWER TRANSFORMER DC-DC converter 1.8D DC-DC converter 1.1DH +B (Power Amp) RY101 IC944 +5.6V Q254 C1084 BD9328EFJ BD9328EFJ +1.8D RAL035P01 +1.8DV +1.8DV (Video Dec) +1.1DH F3702 +5.6V +1.1DH (Pana) FUSE +1.8D +1.1DH...

  • Page 87: Wiring Diagram

    RX-V681/RX-A760 ■ WIRING DIAGRAM Top view Side view AM/FM OPERATION (8) OPERATION (9) • OVERALL ASSEMBLY TUNER MAIN (2) R, V, S models CB111 Power cable W3703 80 mm to OPERATION (2) W3704 CB391 Don’t touch with (3-1/8") (CB344) OPERATION (4) CB374 TOP COVER.

  • Page 88: Printed Circuit Boards

    RX-V681/RX-A760 • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location RX-V681 RX-A760 D4204 IC50 ■ PRINTED CIRCUIT BOARDS D750 D4205 IC53 D751 D9401 IC55 ETH_RX_M DGND ETH_RX_P NCPU_ADT_MCKR...
  • Page 89 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL (1) (Side B) • Semiconductor Location Ref no. Location D100 IC14 D801 D9406 D9407 IC14 IC21 IC45 IC57 IC77 IC83 IC88 IC91 IC92 IC93 IC924 IC926 IC928 IC930 IC945 IC88 IC946 IC948 IC949 IC83 IC926 IC948...
  • Page 90 RX-V681/RX-A760 RX-V681 OPERATION (1) (Side A) DIGITAL (1) (CB82) FLP_PON FLD_N_RST FLD_N_CS FLD_SCK FLD_MOSI MIC_N_DET REM_IN Remote control sensor DGND DGND PRV2 DGND PSW_DET KEY1 KEY2 VOL_RA VOL_RB PD_LED FLD_PON +3.3M STBY_LED +5.6 +5.6 DGND DGND TUNING ZONE CONTROL ZONE 2...
  • Page 91 RX-V681/RX-A760 RX-V681 OPERATION (1) (Side B) IC302 IC301 • Semiconductor Location Ref no. Location D3008 D3009 D3010 D3011 D3012 D3014 D3015 D3016 D3017 D3018 D3023 D3025 IC301 IC302 Q3001 Q3002 Q3003 Q3004 Q3006 Q3007 Q3010 Q3011 Q3012 Q3013 Q3016...
  • Page 92 RX-V681/RX-A760 RX-V681 OPERATION (2) (Side A) AM/FM TUNER OPERATION (9) (Side A) OPERATION (1) (CB306) VIDEO (TV) OPERATION (3) (W3705) CB343 +5AE CB342 CB346 TUN_SDA TUN_SCL TUN_N_RST TUN_N_INT VID_SDA VID_SCL PS2_PRT VID_PON AD_V AD_Y +3.3V AD_Pb AD_Pr DIGITAL (1) +12V...
  • Page 93 RX-V681/RX-A760 RX-V681 OPERATION (2) (Side B) OPERATION (9) (Side B) IC346 IC344 IC342 IC341 13 14 • Semiconductor Location Ref no. Location IC341 IC342 IC344 IC346 Q3420...
  • Page 94 RX-V681/RX-A760 RX-V681 OPERATION (3) OPERATION (4) (Side A) (Side A) DIGITAL (1) (CB945) OPERATION (2) +3.3A (CB345) +5AE DC_TRG AUXR AV1_D AUXL +5DSP AV2_D +12V DGND IC372 IC373 AV3_D -12V DGND PS2_PRT MAIN (1) AV4_D +5AE (W110) DGND DGND +18V...
  • Page 95 RX-V681/RX-A760 RX-V681 OPERATION (3) OPERATION (4) (Side B) (Side B) • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location D3702 D3752 Q3751 D3703 D3753 Q3752 D3705 D3754 Q3801 D3706 D3755 Q3803 D3707 D3756 Q3804 D3708 D3757 D3709...
  • Page 96 RX-V681/RX-A760 RX-V681 OPERATION (5) OPERATION (6) (Side A) (Side A) OPERATION (1) (CB304) CB305 PURE DIRECT PURE indicator DIRECT VOLUME YPAO Standby indicator MAIN ZONE CB301 to chassis OPERATION (1) (CB302) PHONES OPERATION (7) OPERATION (8) (Side A) (Side A)
  • Page 97 RX-V681/RX-A760 RX-V681 OPERATION (5) OPERATION (6) (Side B) (Side B) OPERATION (7) OPERATION (8) (Side B) (Side B) • Semiconductor Location Ref no. Location D3001 D3002 D3003 D3019 D3020 IC303 Q3005 Q3014...
  • Page 98 RX-V681/RX-A760 RX-A760 OPERATION (10) (W304B) OPERATION (1) (Side A) ISEL_RB DGND ISEL_RA DIGITAL (1) +3.3M (CB82) FLP_PON FLD_N_RST FLD_N_CS FLD_SCK FLD_MOSI MIC_N_DET REM_IN PURE DIRECT ISEL_RA indicator ISEL_RB Remote control PRV2 DGND sensor PSW_DET KEY1 KEY2 VOL_RA VOL_RB PD_LED FLD_PON +3.3M...
  • Page 99 RX-V681/RX-A760 RX-A760 OPERATION (1) (Side B) IC301 • Semiconductor Location Ref no. Location D3009 D3010 D3015 D3019 OPERATION (11) (Side B) D3020 D3021 OPERATION (12) (Side B) D3022 D3025 D3026 D3027 IC301 IC302 Q3001 Q3002 Q3003 Q3004 Q3005 Q3007 Q3009...
  • Page 100 RX-V681/RX-A760 RX-A760 AM/FM TUNER OPERATION (2) OPERATION (9) (Side A) (Side A) OPERATION (1) (CB305) VIDEO (TV) OPERATION (3) (W3705) CB343 +5AE CB361 CB342 CB346 TUN_SDA TUN_SCL TUN_N_RST TUN_N_INT VID_SDA VID_SCL PS2_PRT VID_PON AD_V AD_Y +3.3V AD_Pb AD_Pr DIGITAL (1)
  • Page 101 RX-V681/RX-A760 RX-A760 OPERATION (2) OPERATION (9) (Side B) (Side B) IC342 IC344 IC341 13 14 • Semiconductor Location Ref no. Location IC341 IC342 IC344 IC346 Q3420...
  • Page 102 RX-V681/RX-A760 RX-A760 OPERATION (3) OPERATION (4) (Side A) (Side A) DIGITAL (1) (CB945) OPERATION (2) +3.3A (CB345) +5AE DC_TRG AUXR AV1_D AUXL +5DSP AV2_D +12V DGND AV3_D -12V DGND PS2_PRT IC373 MAIN (1) IC372 AV4_D +5AE (W110) DGND DGND +18V...
  • Page 103 RX-V681/RX-A760 RX-A760 OPERATION (3) OPERATION (4) (Side B) (Side B) • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location D3702 D3715 IC382 D3703 D3750 IC383 D3705 D3751 Q3701 D3706 D3752 Q3702 D3707 D3753 Q3703 D3708 D3754 Q3750...
  • Page 104 RX-V681/RX-A760 RX-A760 OPERATION (5) OPERATION (6) OPERATION (7) (Side A) (Side A) (Side A) PHONES SILENT CINEMA YPAO Standby indicator MIC_N_DET -12V MAIN ZONE CB308 +12V OPERATION (1) (CB303) OPERATION (1) (CB306) CB302 OPERATION (8) (Side A) SPEAKERS EXTRA SP1...
  • Page 105 RX-V681/RX-A760 RX-A760 OPERATION (5) OPERATION (6) OPERATION (7) (Side B) (Side B) (Side B) OPERATION (8) (Side B) OPERATION (10) (Side B) • Semiconductor Location Ref no. Location D3001 D3002 D3003 D3004 D3006 IC303 Q3014...
  • Page 106 RX-V681/RX-A760 RX-V681 RX-A760 SPEAKERS ADTL RX-V681: DIGITAL (1) AGND OPERATION (4) (CB384) EXTRA SP2 (CB949) ADTR RX-A760: SURROUND CENTER FRONT SURROUND BACK MAIN (1) (Side A) OPERATION (4) ( CB384 ZONE2/BI-AMP RX-V681: OPERATION (7) (CB308) ZONE OUT PRE OUT PHONO...
  • Page 107 RX-V681/RX-A760 RX-V681 RX-A760 • Semiconductor Location Ref no. Location Ref no. Location D1001 IC154 MAIN (1) (Side B) D1002 IC156 D1003 IC157 D1004 IC158 D1005 IC159 D1006 IC161 D1007 Q1001 D1008 Q1002 D1009 Q1003 R, S, V models D1010 Q1004...
  • Page 108 RX-V681/RX-A760 RX-V681 RX-A760 MAIN (2) MAIN (3) MAIN (4) (Side A) (Side A) (Side A) R, S, V models POWER VOLTAGE TRANSFORMER SELECTOR 110–120V 220–240V CB111 W112 DIGITAL (1) (CB79) MAIN (5) MAIN (6) (Side A) (Side A)
  • Page 109 RX-V681/RX-A760 RX-V681 RX-A760 MAIN (2) MAIN (3) MAIN (4) (Side B) (Side B) (Side B) R, S, V models HEATSINK TEMPERATURE MAIN (5) MAIN (6) (Side B) (Side B)

  • Page 110: Pin Connection Diagrams

    RX-V681/RX-A760 ■ PIN CONNECTION DIAGRAMS • ICs • ICs TC7WH126FU TC7WH32FK TL431AC TMPM462F15FG A3V56S40GTP-60 ADV7180BSTZ BD00GA3WEFJ-E2 BD34703KS2 BD7541G-TR A3V28S40JTP-60 BD9328FJ BD9329AEFJ-E2 1: CATHODE 2: ANODE 3: REF BD88400FJ TLP781 W25Q32FVSSIG EN29LV640AB-90TIP KIA7912PI M95512-RDW6TP/K ML9286-03GAZ0ARL MN864787 • Diodes 1SS355VM DA2JF2300L DBL155G...

  • Page 111: Schematic Diagrams

    RX-V681/RX-A760 RX-V681 RX-A760 ■ SCHEMATIC DIAGRAMS DIGITAL 1/7 t o D I G I T A L ( 2 ) Page 112 K8 0 0 2 . s h t to DIGITAL (2)_CB422 ( F r o n t H D M I )
  • Page 112 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL 2/7 VIDEO AUX HDMI IN 1.798V DIGITAL (1) + 1 . 8 D V + 1 . 8 D D I G I T A L ( 2 ) F r o n t H D M I...
  • Page 113 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL 3/7 t o 0 0 1 . s h t H R X _ C L K , H R X _ Y [ 0 - 7 ] , H R X _ C [ 0 - 7 ] , H R X _ D E , H R X _ H S , H R X _ V S...
  • Page 114 RX-V681/RX-A760 RX-V681 RX-A760 IC79, 81, 83, 88 : TC74VHC273FT (EL,K) J 7 5 1 to DIGITAL 1/7 to DIGITAL 2/7 to DIGITAL 3/7 to DIGITAL 5/7 to DIGITAL 6/7 to DIGITAL 7/7 Octal D-type flip-flop with clear DIGITAL 4/7 DIGITAL (1) J 7 5 2 t o 0 0 1 .
  • Page 115 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL 5/7 DIGITAL (1) N C P U _ A D T _ B C K N C P U _ A D T _ W C K to DIGITAL 7/7 N C P U _ A D T _ S D O...
  • Page 116 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL 6/7 IC926, 930: W25Q32FVSSIG 32 Mbit serial flash memory SFDP Register Security Register 1 - 3 D S P 2 _ M C K 000000h 0000FFh 003000h 0030FFh 002000h 0020FFh 001000h 0010FFh Block Segmentation 3FFF00h 3FFFFFh...
  • Page 117 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL 7/7 IC945, 946: TC74VHC157FT Quad 2-channel multiplexer + 3 . 3 A A s i d e N C P U _ W C K + 3 . 3 N P D A C D S P 1 _ M C K...
  • Page 118 (SCENE2) (SCENE1) CONTROL (power) CONTROL B R A Z I L (RX-V681 models) Red / full line: Power supply (+) M A R K C E R A M I C C A P A C I T O R...
  • Page 119 RX-V681/RX-A760 RX-V681 OPERATION 2/3 Page 118 I8 Page 120 L4 Page 120 I7 to OPERATION (1)_CB306 to OPERATION (4)_CB383 to AM/FM TUNER to OPERATION (3)_W3705 t o T U N E R P a c k t o O P E ( 4 )
  • Page 120 RX-V681/RX-A760 RX-V681 IC382: RP170H331B-T1-FE OPERATION 3/3 Voltage regulator Page 117 K2 to DIGITAL (1)_CB945 OPERATION (8) Page 124 I9 t o D I G I T A L to MAIN (1)_W110 B t o B OPERATION (4) O P E ( 8 )
  • Page 121 (SCENE2) (SCENE1) CONTROL (power) CONTROL B R A Z I L (RX-V681 models) Red / full line: Power supply (+) M A R K C E R A M I C C A P A C I T O R...
  • Page 122 RX-V681/RX-A760 RX-A760 OPERATION 2/3 Page 121 G9 Page 123 J4 Page 120 I6 IC341: NJW1329FH3 to OPERATION (1)_CB305 to OPERATION (4)_CB383 to AM/FM TUNER to OPERATION (3)_W3705 Multi input wide band video interface with I C control t o O P E ( 4 )
  • Page 123 RX-V681/RX-A760 RX-A760 Page 124 I9 Page 117 K2 to MAIN (1)_W110 to DIGITAL (1)_CB945 OPERATION 3/3 t o D I G I T A L B t o B OPERATION (8) 5 3 2 9 0 - 1 5 8 0...
  • Page 124 RX-V681/RX-A760 RX-V681 RX-A760 Page 118 D e s t i n a t i o n P a r t L i s t + - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - +...
  • Page 125 RX-V681/RX-A760 RX-V681 RX-A760 AUDIO 1 AUDIO 2 ZONE OUT PRE OUT MAIN 2/2 SUBWOOFER MAIN (1) C 1 6 1 2 C 1 5 8 2 6 8 0 P ( S L ) 1 0 0 K 0 . 0 1 ( B )

  • Page 126: Replacement Parts List

    RX-V681/RX-A760 ■ 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 LED.CHP...
  • Page 127 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL Ref No. Part No. Description Markets Ref No. Part No. Description Markets ZU195300 P.C.B. DIGITAL WD758300 C.CE.CHP 10uF * CB1 WY786801 CN.BS.PIN 24P 502231 TE ZM730500 C.CE.CHP 22uF 6.3V CB4-5 ZD534300 CN.HDMI 19P SE ZM730300 C.CE.CHP 0.1uF...
  • Page 128 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL Ref No. Part No. Description Markets Ref No. Part No. Description Markets C190 ZM730300 C.CE.CHP 0.1uF C750-753 US663100 C.CE.CHP 1000pF C191-192 US663100 C.CE.CHP 1000pF C754 US625100 C.CE.CHP 0.1uF C193-196 US625100 C.CE.CHP 0.1uF C755-762 US663100 C.CE.CHP 1000pF C202 ZM730300 C.CE.CHP...
  • Page 129 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL Ref No. Part No. Description Markets Ref No. Part No. Description Markets C4220 US662101 C.CE.CHP 100pF C9227-9232 WD758300 C.CE.CHP 10uF C4221 US625100 C.CE.CHP 0.1uF C9233-9248 US625100 C.CE.CHP 0.1uF C4222 WD758300 C.CE.CHP 10uF C9249 US634100 C.CE.CHP 0.01uF C4223 US625100 C.CE.CHP...
  • Page 130 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL Ref No. Part No. Description Markets Ref No. Part No. Description Markets C9458 WD758300 C.CE.CHP 10uF IC482-485 YG390A00 IC PCM5102APWR C9461 US625100 C.CE.CHP 0.1uF IC486 YF393A00 IC.DAC PCM5101APWR C9463 US625100 C.CE.CHP 0.1uF IC921 YG186A00 IC RP115H131D-T1-FE C9469-9470 US046100 C.CE.CHP...
  • Page 131 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL Ref No. Part No. Description Markets Ref No. Part No. Description Markets Q256 WW782000 TR.DGT DTA044EUBTL RD457100 R.CHP 10KΩ 1/16W J Q450 WZ703400 FET RAL035P01 RD454220 R.CHP 22Ω 1/16W J Q451 WW782000 TR.DGT DTA044EUBTL RD454220 R.CHP 22Ω...
  • Page 132 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL Ref No. Part No. Description Markets Ref No. Part No. Description Markets R195 RD457221 R.CHP 22KΩ 1/16W R520-521 RD457100 R.CHP 10KΩ 1/16W J R201 RD457221 R.CHP 22KΩ 1/16W R523 RD454471 R.CHP 47Ω 1/16W R203 RD454471 R.CHP 47Ω...
  • Page 133 RX-V681/RX-A760 RX-V681 RX-A760 DIGITAL Ref No. Part No. Description Markets Ref No. Part No. Description Markets R845-846 RD456220 R.CHP 2.2KΩ 1/16W J R9201 RD455100 R.CHP 100Ω 1/16W J R847 RD455100 R.CHP 100Ω 1/16W J R9202 RD456470 R.CHP 4.7KΩ 1/16W J R848 RD458471 R.CHP...
  • Page 134 RX-V681/RX-A760 RX-V681 RX-A760 RX-V681 DIGITAL OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets R9437 RD457100 R.CHP 10KΩ 1/16W J ZQ349800 P.C.B. OPERATION R9438 RD454330 R.CHP 33Ω 1/16W J ZQ349900 P.C.B. OPERATION R9439 RD455681 R.CHP 680Ω...
  • Page 135 RX-V681/RX-A760 RX-V681 OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets C3039 US062100 C.CE.CHP 100pF 50V B C3718 WH771600 C.EL 220uF C3040-3041 US035100 C.CE.CHP 0.1uF 16V B C3719 US064100 C.CE.CHP 0.01uF 50V B C3043 US062100 C.CE.CHP...
  • Page 136 RX-V681/RX-A760 RX-V681 OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets D3753 WW783900 DIODE 1SS355VM R3007 RD356100 R.CHP 1KΩ 1/16W J D3754-3756 ZF305000 DIODE.CHP RB162L-40 TE25 TP R3008 RD357100 R.CHP 10KΩ 1/16W J D3757 WW783900 DIODE...
  • Page 137 RX-V681/RX-A760 RX-V681 OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets R3082-3083 RD354680 R.CHP 68Ω 1/16W J R3802 RD356820 R.CHP 8.2KΩ 1/16W J R3084 RD354330 R.CHP 33Ω 1/16W J R3803-3804 RD354820 R.CHP 82Ω 1/16W J R3403-3405 RD357100 R.CHP 10KΩ...
  • Page 138 RX-V681/RX-A760 RX-A760 OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets ZQ360300 P.C.B. OPERATION C3044-3045 US035100 C.CE.CHP 0.1uF 16V B ZQ360400 P.C.B. OPERATION C3046 UM388100 C.EL 100uF 6.3V ZQ361000 P.C.B. OPERATION C3047-3048 US163100 C.CE.CHP 1000pF ZQ360500 P.C.B.
  • Page 139 RX-V681/RX-A760 RX-A760 OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets ⚠ * C3711 WY896501 C.CE.SAFTY 1500pF 250V D3704 ZF519800 D.SCHOTTKY RBQ30T65A 30A 65V ⚠ C3712 ZP425400 C.CE.M.CHP 0.047uF 500V D3705 ZA385400 DIODE.ZENR TFZGTR24B 24V ⚠...
  • Page 140 RX-V681/RX-A760 RX-A760 OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets Q3801 WC529400 TR KTC3875S Y GR RTK R3058 RD358100 R.CHP 100KΩ 1/16W J * Q3802 ZA348801 TR KTA1046-Y-U/PFY R3061 RD355100 R.CHP 100Ω 1/16W J Q3803...
  • Page 141 RX-V681/RX-A760 RX-A760 OPERATION Ref No. Part No. Description Markets Ref No. Part No. Description Markets R3723 RD355100 R.CHP 100Ω 1/16W J T3702 YG918A00 TRANS.SUB ⚠ R3724 RD358100 R.CHP 100KΩ 1/16W J TE371 ZD538700 INLET.AC 2P R-30190(26) CCC R3725 RD357470 R.CHP 47KΩ...
  • Page 142 RX-V681/RX-A760 RX-V681 RX-A760 MAIN Ref No. Part No. Description Markets Ref No. Part No. Description Markets ZU195500 P.C.B. MAIN C1078-1079 ZH996900 C.MYLAR 0.1uF 100V RABVS ZU195600 P.C.B. MAIN C1080 WP382600 C.CE.M.CHP ZU195700 P.C.B. MAIN C1081-1082 US064100 C.CE.CHP 0.01uF 50V B C1083 WP382600 C.CE.M.CHP...
  • Page 143 RX-V681/RX-A760 RX-V681 RX-A760 MAIN Ref No. Part No. Description Markets Ref No. Part No. Description Markets ⚠ C1614-1615 UR367470 C.EL 47uF Q1029-1035 ZH763000 TR 2SC2229 O,Y C1614-1615 UR267470 C.EL 47uF ⚠ Q1036-1042 V4096100 TR 2SC4614 S,T C1616-1617 US062100 C.CE.CHP 100pF 50V B ⚠...
  • Page 144 RX-V681/RX-A760 RX-V681 RX-A760 MAIN Ref No. Part No. Description Markets Ref No. Part No. Description Markets R1169-1175 RD356470 R.CHP 4.7KΩ 1/16W J R1269-1271 RD356390 R.CHP 3.9KΩ 1/16W J ⚠ R1176-1182 WW861701 R.CAR.FP 4.7Ω 1/4W R1272-1274 RD357100 R.CHP 10KΩ 1/16W J ⚠...
  • Page 145 RX-V681/RX-A760 RX-V681 RX-A760 MAIN Ref No. Part No. Description Markets R1601 RD355220 R.CHP 220Ω 1/16W J R1602-1603 RD357100 R.CHP 10KΩ 1/16W J R1605 RD357100 R.CHP 10KΩ 1/16W J R1607-1608 RD358100 R.CHP 100KΩ 1/16W J R1609 RD357100 R.CHP 10KΩ 1/16W J R1610 RD355220 R.CHP...
  • Page 146 RX-V681/RX-A760 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 11 kΩ 7110 7110 HJ35 HF85 HF45 HF45 1.8 Ω 3180 12 kΩ 7120 7120...
  • Page 147 RX-V681/RX-A760 RX-V681 • OVERALL ASSEMBLY R, V, S models 1-50 1-53 1-401 1-11 1-14 1-52 2 (1) 1-402 1-54 1-64 1-52 1-52 1-52 1-53 1-52 1-52 1-10 1-69 1-401 1-416 1-52 1-419 1-13 1-52 1-50 1-56 500-1 1-69 1-50 1-403...
  • Page 148 RX-V681/RX-A760 RX-V681 Ref No. Part No. Description Remarks Markets Ref No. Part No. Description Remarks Markets ⚠ YG990A00 POWER TRANSFORMER ZU195300 P.C.B. ASSEMBLY DIGITAL ⚠ YG991A00 POWER TRANSFORMER ZQ349800 P.C.B. ASSEMBLY OPERATION ⚠ YG992A00 POWER TRANSFORMER ZQ349900 P.C.B. ASSEMBLY OPERATION ⚠...
  • Page 149 RX-V681/RX-A760 RX-V681 • FRONT PANEL UNIT Ref No. Part No. Description Remarks Markets WY194500 FLEXIBLE FLAT CABLE 26P 300mm P=1.25 WU249700 FLEXIBLE FLAT CABLE 5P 300mm P=1.25 1-10 ZR748900 SHIELD FLEXIBLE FLAT CABLE 24P 310mm P=0.5 1-51 1-51 WE774800 BIND HEAD P-TIGHT SCREW...
  • Page 150 RX-V681/RX-A760 RX-V681 • AMP UNIT Ref No. Part No. Description Remarks Markets 1-50 WE774300 BIND HEAD B-TIGHT SCREW MFZN2W3 1-55 WM220800 HEXAGONAL HEAD B-TIGHT SCREW 3x15 SP MFZN2W3 1-63 VQ368600 PUSH RIVET P3555-B 1-64 1-64 ZG891700 CABLE CLAMP RBWS-0409E-VO * 1-70...
  • Page 151 RX-V681/RX-A760 RX-A760 • OVERALL ASSEMBLY 1-50 1-14 1-11 2 (1) 500-1 1-52 1-54 1-401 1-402 1-52 1-52 U, C, R, L models 1-10 1-53 1-52 1-69 1-69 1-52 1-416 T, A, B, F, G models 1-52 1-69 1-419 1-403 1-50...
  • Page 152 RX-V681/RX-A760 RX-A760 Ref No. Part No. Description Remarks Markets Ref No. Part No. Description Remarks Markets ⚠ YG990A00 POWER TRANSFORMER WE200500 DISH HEAD B-TIGHT SCREW MFNI3BL ⚠ YG991A00 POWER TRANSFORMER WQ665500 TOP COVER ⚠ YG992A00 POWER TRANSFORMER WW982200 SIDE PLATE L/R 1pair ⚠...
  • Page 153 RX-V681/RX-A760 RX-A760 • FRONT PANEL UNIT and SUB-CHASSIS UNIT Ref No. Part No. Description Remarks Markets 1-50 WP242200 FLEXIBLE FLAT CABLE 26P 250mm P=1.25 (10) 1-50 1-50 WS162400 FLEXIBLE FLAT CABLE 5P 250mm P=1.25 1-10 ZR748900 SHIELD FLEXIBLE FLAT CABLE 24P 310mm P=0.5...
  • Page 154 RX-V681/RX-A760 RX-A760 • AMP UNIT Ref No. Part No. Description Remarks Markets 1-50 WE774300 BIND HEAD B-TIGHT SCREW MFZN2W3 1-55 WM220800 HEXAGONAL HEAD B-TIGHT SCREW 3x15 SP MFZN2W3 1-63 VQ368600 PUSH RIVET P3555-B 1-64 1-64 ZG891700 CABLE CLAMP RBWS-0409E-VO * 1-70...

  • Page 155: Remote Control

    RX-V681/RX-A760 ■ REMOTE CONTROL SCHEMATIC DIAGRAM PANEL RAV537 RAV537 47uF In-system programming point 10 ohm 1ohm RETURN PROGRAM MOVIE INFO 0.1uF IR Diode HDMI TOP MENU TUNING SC51P03A04JT1G 0 ohm 0 ohm BAND ENTER MUSIC SLEEP Remote control sheet P2.0 P3.0/REM...
  • Page 156 RX-V681/RX-A760 KEY NO. LAYOUT KEY CODE FUNCTION ID-1 ID-2 FUNCTION ID-1 ID-2 Remote Remote control control Key name MAIN ZONE2 MAIN ZONE2 Key name MAIN ZONE2 MAIN ZONE2 sheet sheet (T model) (T model) SW1 MAIN/ZONE2 [MAIN] [ZONE2] [MAIN] [ZONE2]...
  • Page 157 RX-V681/RX-A760 MEMO MEMO...

  • Page 158: Firmware Updating Procedure

    FIRMWARE UPDATING PROCEDURE IMPORTANT NOTICE Do not attempt to update your Yamaha receiver using any other data file except those provided directly from the Yamaha website or through your network connection. Follow the instructions carefully and do not attempt any other procedures not specified in the instructions provided by Yamaha.
  • Page 159 RX-V V681 RX-V681/RX-A760 RX-V681 Firmw ware Upd ate Thro ough the Internet Requir rement: ternet connect tion our receiver is connected to the Internet if f you can recei ive Internet rad dio stations. See owner’s m anual for deta...
  • Page 160 RX-V681 RX-V681/RX-A760 RX-V681 Check the updated firmware version a. Power on the AV receiver and press the ON SCREEN key on the remote control. b. Select “Information” > “System”. c. Confirm that the firmware version is updated to the latest version.
  • Page 161 RX-V V681 RX-V681/RX-A760 RX-V681 Firmw ware Upd ate by U Require ement: SB thumb driv ve, with enoug h free space to o store over 2 5MB. File system wit h FAT16 or FA AT32 format) rmware file pro ovided by YAM MAHA, “Rxxxx...
  • Page 162 RX-V V681 RX-V681/RX-A760 RX-V681 art firmw ware upd a. P Press INFO (W WPS) key to st tart the update (Update proce ess may take u up to 10 minute UPDAT TE SUCCESS If “ ” appears, th is means your...
  • Page 163 RX-V681 RX-V681/RX-A760 RX-V681 Troubleshooting CASE 1 Error message appeared during the update Cause: For some reason, the receiver can’t read the firmware data. Method: For your solution, check the following [Update through Internet] ❏ Check Internet connection. Your Internet connection is working by playing an Internet radio station.
  • Page 164 FIRMWARE UPDATING PROCEDURE IMPORTANT NOTICE Do not attempt to update your Yamaha receiver using any other data file except those provided directly from the Yamaha website or through your network connection. Follow the instructions carefully and do not attempt any other procedures not specified in the instructions provided by Yamaha.
  • Page 165 RX-A A760 RX-V681/RX-A760 RX-A760 Firmw ware Upd ate Thro ough the Internet Requir rement: ternet connect tion our receiver is connected to the Internet if f you can recei ive Internet rad dio stations. See owner’s m anual for deta...
  • Page 166 RX-A760 RX-V681/RX-A760 RX-A760 Check the updated firmware version a. Power on the AV receiver and press the ON SCREEN key on the remote control. b. Select “Information” > “System”. c. Confirm that the firmware version is updated to the latest version.
  • Page 167 RX-A A760 RX-V681/RX-A760 RX-A760 Firmw ware Upd ate by U Require ement: SB thumb driv ve, with enoug h free space to o store over 2 5MB. File system wit h FAT16 or FA AT32 format) rmware file pro ovided by YAM MAHA, “Rxxxx...
  • Page 168 RX-A A760 RX-V681/RX-A760 RX-A760 art firmw ware upd a. P Press INFO (W WPS) key to st tart the update (Update proce ess may take u up to 10 minute UPDAT TE SUCCESS If “ ” appears, th is means your...
  • Page 169 RX-A760 RX-V681/RX-A760 RX-A760 Troubleshooting CASE 1 Error message appeared during the update Cause: For some reason, the receiver can’t read the firmware data. Method: For your solution, check the following [Update through Internet] ❏ Check Internet connection. Your Internet connection is working by playing an Internet radio station.
  • Page 170 AV RECEIVER RX-V681/RX-A760...

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