How to unlock settings on Yamaha Amplifier?
If you are unable to change DSP parameters or other settings on your Yamaha Amplifier, check the '6. MEMORY GUARD' function in the SET MENU mode. If it is set to 'ON', set it to 'OFF'.
What to do if my Yamaha DSP-A2 Amplifier has no sound or picture?
If you experience no sound or picture from your Yamaha Amplifier, make sure the output cords are connected properly; the cords may be defective. Also, select the correct input source using the INPUT SELECTOR or the EXT. DECODER button, and ensure speaker connections are secure. Finally, if playing a CD-ROM, ensure the signals are compatible (PCM audio, Dolby Digital, or DTS).
What to do if Yamaha DSP-A2 Amplifier sound suddenly goes off?
If the sound suddenly goes off on your Yamaha Amplifier, the protection circuit may have been activated due to a short circuit. To resolve this, turn the unit into standby mode and then turn it back on to reset the protection circuit. Alternatively, the SLEEP timer may have been activated; if so, cancel the SLEEP timer function.
Why Yamaha Amplifier no sound from effect speakers?
If you get no sound from the effect speakers on your Yamaha Amplifier, ensure the EFFECT button is turned on. Also, if using a Dolby Surround (or DTS) decoding program, make sure the material is encoded with Dolby Surround (or DTS). If not, try a different sound field program.
Why Yamaha DSP-A2 Amplifier no sound from the center speaker?
If you're not getting any sound from the center speaker on your Yamaha Amplifier, check that the '1A. CENTER SP' function in the SET MENU mode is not set to 'NONE'. Select the appropriate position. Also, if using DSP programs No. 1 to No. 7 with a 2-channel stereo source, try selecting another program. Finally, if the source is encoded with Dolby Digital or DTS, ensure it has center channel signals.
Why Yamaha DSP-A2 Amplifier no sound with DTS even in AUTO or DTS mode?
If you are not hearing sound when playing back a DTS-encoded source, even with “AUTO” or “DTS” input mode selected on your Yamaha Amplifier, the player may have a digital volume control set to a position other than “maximum”, “neutral”, or “ineffective”. Set the player’s digital volume control to one of these positions.
Why Yamaha DSP-A2 continuous functions operate only for a moment?
If continuous functions learned on your Yamaha Amplifier remote, such as volume, operate only momentarily, ensure that you press and hold the function key on the other remote controller until the TRANSMIT/LEARN indicator begins flashing slowly. This indicates that the learning process is complete.
Why Yamaha Amplifier no sound with AUTO input mode?
If you are not hearing sound when playing back a source (CD etc.) even though the currently selected input mode is “AUTO” on your Yamaha Amplifier, the unit may not be switching from DTS-decoding mode to the normal (PCM) digital signal input mode automatically. Press the INPUT MODE button on the front panel or the input selector button on the remote so that “PCM” appears on the display.
Why Yamaha DSP-A2 Amplifier sound hums?
If you hear a hum from your Yamaha Amplifier, ensure that all audio plugs are firmly connected. If the problem continues, the cords may be defective. Also, if you are using a turntable, make sure it is properly connected to the GND terminal on the unit.
Why does my Yamaha DSP-A2 Amplifier make a percussive noise with DTS?
If you are experiencing a percussive noise when starting playback of a DTS-encoded source on your Yamaha Amplifier, and the input mode is set to “AUTO”, this noise may occur while the unit identifies the input signal format. To prevent this, set the input mode for the selected source to 'DTS'.
General| Frequency Response | 20Hz - 20kHz |
|---|---|
| Total Harmonic Distortion | 0.015% |
| Type | AV Amplifier |
| Input Sensitivity | 200 mV (Line) |
| Channel Separation | 60 dB |
| Speaker Load Impedance | 4-16 ohms |
| Video Connections | Composite, S-Video |
| Surround Sound Formats | Dolby Digital, DTS |
| Signal-to-Noise Ratio | 100 dB |
| Dimensions | 435 x 171 x 476 mm |
| Damping Factor | 80 (8 ohms, 1kHz) |
| Digital Inputs | 2 Coaxial |
| DSP Modes | Cinema DSP |
| Inputs | Phono |
| Outputs | Speaker Outputs |
Information on critical components requiring exact replacement with specified parts.
Safety warnings regarding impedance selector usage and static discharge prevention.
Rear panel connection layouts for R, T, B, and G models.
Minimum, maximum, and dynamic output power per channel.
Tone control, filters, separation, and RIAA equalization.
Power supply, consumption, dimensions, and weight.
Table of DSP programs with delay, room size, and other parameters.
Settings for speaker configuration and digital audio formats.
Settings for delay, initialization, memory guard, input, and dimmer.
Settings related to superimposing display signals.
Diagram showing internal components with reference numbers.
Steps for removing top cover, bottom cover, and front panel.
Procedure to start diagnosis and how the menu is displayed.
Explanation of I PROTECTION, PS PRT, DC PRT, TMP PRT errors.
Information on how protection history is stored and cleared.
Procedure to cancel DIAG and navigate menus.
Functions available and initial settings for DIAG.
Details of the analog through diagnostic mode.
Details of the DSP through diagnostic modes.
Details of the DSP full bit diagnostic mode.
Details of the AC3/DTS throughput diagnostic mode.
Details of the Pro Logic diagnostic mode.
Details of the speaker settings menu.
Diagnostic check for the FL display section.
Diagnostic test using noise generator.
Menu for managing preset data and initialization.
Diagnostic check for A/D conversion values.
Displays status data from the sub-microprocessor.
Checks DSP microprocessor checksum and software version.
Procedure to confirm idling current and test points.
Pin details for IC3 (HD64F3337YF16).
Pin details for IC14 (LC87F5164).
Pin details for IC4 (YSS918).
Pin details for IC10 (PM4007A).
Pin details for IC3 (YM3436DK).
Pin details for IC611 (LC74781-9626).
Layout of grid segments and pattern area for display data.
Pinout diagrams for integrated circuits and transistors.
Pinout diagrams for diodes.
PCB layouts for DSP, Digital In, and Function boards.
PCB layouts for Video, Operation, and Main boards.
Two-part overall block diagram illustrating signal flow.
Circuit schematics for Function boards.
Circuit schematic for the Digital In section.
Circuit schematic for the DSP section.
Circuit schematics for Video boards.
Circuit schematics for Operation boards.
Circuit schematics for Main boards.
List of electrical components with part numbers and descriptions.
List of carbon resistors with values and part numbers.
List of chip resistors with values and part numbers.
Exploded view of the remote control transmitter.
Circuit schematic for the remote control transmitter.
Diagram of key layout and table of fixed codes.
Explanation of learning, macro, and key action functions.
Information on key lighting, control transmission, and macro transmission.
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