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Yamaha DSP-AX750SE - User Manual

Yamaha DSP-AX750SE
128 pages
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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.
IMPORTANT NOTICE
100885
SERVICE MANUAL
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760
AV RECEIVER/AV AMPLIFIER
AMP CHECK / アンプチェック . . . . . . . . . . . . . . . . . . . . 47
DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 48–49
IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50–60
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 61–62
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 63–77
PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 78
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 79–88
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89–125
REMOTE CONTROL RAV270, RAV271 . . . . 126–127
REMOTE CONTROL RAV248, RAV249 . . . . . . . . 128
■ CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2
IMPEDANCE SELECTOR . . . . . . . . . . . . . . . . . . . . . . 3
FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
REMOTE CONTROL PANELS . . . . . . . . . . . . . . . . . . 6
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–13
SPECIFICATIONS /
参考仕様 . . . . . . . . . . . . . . . . . 14–18
INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DISASSEMBLY PROCEDURES /
分解手順 . . . . . 20–24
SELF DIAGNOSIS FUNCTION (DIAG) /
自己診断機能（ダイアグ） . . . . . . . . . . . . . . . . . . . . 25–46
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760

Table of Contents

Questions and Answers

  • D
    Daniel Miller PhDAug 19, 2025
    What to do if my Yamaha Receiver displays 'E-1:NO FRONT SP' error?
    • A
      Anthony TurnerAug 19, 2025
      If you're getting an 'E-1:NO FRONT SP' error on your Yamaha Receiver, it means the front left or right channel signal isn't being detected. First, make sure you've selected the front speakers using SPEAKER A or B. Then, double-check all the speaker wire connections to your front left and right speakers to ensure they are properly connected.
  • H
    harrellchrisAug 21, 2025
    Why does my Yamaha DSP-AX750SE show 'W-3:LEVEL ERROR'?
    • S
      stacey90Aug 21, 2025
      If your Yamaha Receiver shows a 'W-3:LEVEL ERROR', it means there's a significant difference in volume levels among your speakers, preventing proper level correction. Here's what you can do: 1. Readjust the speaker installation so that all speakers are set in locations with similar conditions. 2. Check the speaker connections. 3. Use speakers of similar quality and efficiency. 4. Adjust the output volume of the subwoofer.
  • S
    Stephanie BoydAug 25, 2025
    How to fix 'W-1:OUT OF PHASE' error on Yamaha DSP-AX750SE Receiver?
    • S
      Stephanie BrockAug 25, 2025
      If your Yamaha Receiver displays a 'W-1:OUT OF PHASE' error, it indicates that the speaker polarity might not be correct. Double-check the speaker connections to ensure that the positive (+) and negative (–) terminals on your receiver match the corresponding terminals on your speakers. Note that this message may appear even when the speakers are connected correctly.
  • A
    Anthony WilliamsAug 26, 2025
    What to do if Yamaha Receiver shows 'E-8:NO SIGNAL' error?
    • B
      Bryan WilliamsAug 27, 2025
      If your Yamaha Receiver displays 'E-8:NO SIGNAL', the optimizer microphone isn't detecting the test tones during the auto setup. Check the microphone setting, and then verify the speaker connections and their placement in the room.
  • R
    Richard CraigAug 28, 2025
    What causes 'E-5:NOISY' error on Yamaha DSP-AX750SE Receiver and how to fix it?
    • V
      vanessawellsAug 28, 2025
      If your Yamaha Receiver shows an 'E-5:NOISY' error, it means the background noise is too loud during the auto setup procedure. Try running the auto setup in a quieter environment. Turn off any noisy electrical equipment like air conditioners, or move them further away from the optimizer microphone.
  • J
    joseph57Aug 30, 2025
    What to do if my Yamaha DSP-AX750SE Receiver displays the error 'E-2:NO SURR.SP'?
    • L
      larsonalexanderAug 30, 2025
      If your Yamaha Receiver is showing an 'E-2:NO SURR.SP' error, it means a surround channel signal isn't being detected. Check the connections to your surround speakers to resolve this issue.
  • D
    Desiree ButlerSep 1, 2025
    How to troubleshoot 'E-3:NO PRES. SP' error on Yamaha DSP-AX750SE?
    • D
      David CurtisSep 1, 2025
      If you're seeing an 'E-3:NO PRES. SP' error on your Yamaha Receiver, it indicates that a presence channel signal is not being detected. Check the connections to your presence speakers to ensure they are properly connected.
  • M
    Matthew RogersSep 3, 2025
    What does 'E-7:NO MIC' mean on my Yamaha DSP-AX750SE Receiver?
    • W
      williamsrobertSep 3, 2025
      If your Yamaha Receiver displays the error 'E-7:NO MIC', it means the optimizer microphone was unplugged during the auto setup procedure. To fix this, do not touch the optimizer microphone during the auto setup procedure.
  • C
    Carolyn RangelSep 5, 2025
    What does 'E-6:CHECK SURR.' mean on Yamaha DSP-AX750SE?
    • D
      Darrell TorresSep 6, 2025
      If your Yamaha Receiver is displaying 'E-6:CHECK SURR.' it means surround back speakers are connected, but surround L/R speakers are not. Connect surround speakers when you use surround back speaker(s).
  • C
    christinabriggsSep 7, 2025
    Why does my Yamaha DSP-AX750SE display 'E-9:USER CANCEL'?
    • V
      Vincent EdwardsSep 7, 2025
      If your Yamaha Receiver shows 'E-9:USER CANCEL', it means the auto setup was cancelled because of user activity. Perform the auto setup again, and avoid adjusting the volume or other settings during the process.

Yamaha DSP-AX750SE Specifications

General IconGeneral
Audio Channels6.1
TypeAV Receiver
Frequency Response10 Hz - 100 kHz
Signal-to-Noise Ratio100 dB
HDMI Inputs2
HDMI Outputs1
Digital Audio InputYes
Total Harmonic Distortion0.06%
Input Sensitivity/Impedance200 mV / 47 kOhms
Digital Audio Inputs (Optical)3
Digital Audio Inputs (Coaxial)2
Power Output Condition8 ohms, 20Hz - 20kHz, 0.06% THD
Dimensions (W x H x D)435 x 171 x 430 mm

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