What to do if my Pioneer VSX-921-K Receiver shows OVERHEAT and turns off?
If the display shows 'OVERHEAT' and the power turns off, it means the unit's internal temperature is too high. Try to improve ventilation by moving the Pioneer Receiver. You can also try lowering the volume.
Why does my Pioneer VSX-921-K Receiver say TEMP and the volume goes down?
If the display shows 'TEMP' and the volume drops, it indicates the internal temperature of the Pioneer Receiver is too high. Try to improve ventilation by moving the unit. Alternatively, lower the volume level.
How to fix no sound from subwoofer on Pioneer Receiver?
If there's no sound from your subwoofer, first ensure the subwoofer is powered on and the volume knob is turned up, if available. If you are listening to Dolby Digital or DTS source that may not have an LFE channel, switch the subwoofer setting in Speaker Setting to YES or PLUS. Also, try switching the LFE ATT (LFE Attenuate) to LFEATT 0.
Why can't I operate the remote control for my Pioneer Receiver?
If you can't operate the remote control for your Pioneer Receiver, try these steps: Replace the batteries. Ensure you are within 7 meters (23 ft.) and 30º of the remote sensor. Remove any obstacles between the remote and the receiver, or operate from a different position. Avoid exposing the remote sensor to direct light.
What to do if no sound is output when an input function is selected on Pioneer Receiver?
If there's no sound output when an input function is selected on your Pioneer Receiver, try the following: Use MASTER VOLUME to increase the volume. Press MUTE on the remote to turn muting off. Press SPEAKERS to select the correct speaker set. Set the SIGNAL SEL to H (HDMI), C1/O1/O2 (digital) or A (analog) based on your connections. Ensure the component is connected correctly. Check the audio output settings of the source component.
Why is my Bluetooth device not connecting to my Pioneer VSX-921-K Receiver?
If you're experiencing issues with your Bluetooth device connecting to the Pioneer Receiver, ensure that there are no devices emitting electromagnetic waves in the 2.4 GHz band nearby. Make sure the Bluetooth device isn't too far from the unit and there are no obstructions between them. Verify that the Bluetooth ADAPTER and the ADAPTER PORT are correctly connected. Check that pairing is correct.
Why does my Pioneer Receiver have no sound, or sound suddenly ceases?
If you experience no sound or sudden sound cessation with your Pioneer Receiver, verify that the Audio Parameter setting is set to HDMI AMP/THRU. If using a DVI device, ensure a separate audio connection. Be aware that HDMI format digital audio transmissions may require more time to be recognized. Turning on/off a device connected to the unit’s HDMI OUT terminal during playback may cause noise or interrupted audio.
What to do if no sound is output or a noise is output when software with DTS is played back on Pioneer VSX-921-K Receiver?
If there is no sound, or a noise is output when playing software with DTS, ensure the player’s settings are correct and/or the DTS signal out is on.
Why doesn’t the Phase Control feature seem to have an audible effect on my Pioneer VSX-921-K Receiver?
If the Phase Control feature on your Pioneer Receiver doesn't seem to have an audible effect, check that the lowpass filter switch on your subwoofer is off, or the lowpass cutoff is set to the highest frequency setting, if applicable. Also, make sure the speaker distance setting is correct for all speakers.
Why is synchronized operation not possible using Control with HDMI function on my Pioneer Receiver?
If you are experiencing synchronized operation issues using the Control with HDMI function on your Pioneer Receiver, check the HDMI connections and ensure the cables are not damaged. Also, verify that the Control with HDMI setting is turned ON.
General guidelines for service technicians and customer safety.
Information on special safety characteristics of components and risks of substitutes.
Conformance to regulations and safe servicing environment.
Procedures for optimum product performance and characteristic confirmation.
Technical details of the amplifier's power output and impedance.
Specifications for HDMI, USB, and other digital interfaces.
Procedures to confirm after service to ensure product quality and customer satisfaction.
List of specialized jigs required for diagnosis and firmware updates.
A high-level overview of the unit's internal connections and signal flow.
Detailed block diagram of the audio processing path for specific models.
Block diagram of the power supply and main control unit.
Step-by-step guide to diagnose and resolve common operational issues.
Explanation of adapter port overcurrent detection and error display.
Details on error messages related to USB and iPod connectivity.
How to view and interpret protection detection counts.
Procedure to clear protection detection counts.
Procedures for safely discharging capacitors before servicing.
Step-by-step instructions for disassembling the unit's front panel.
Steps for removing and replacing the D-MAIN circuit board.
Identifies when adjustments are needed after part or assembly replacement.
Guide for updating the unit's firmware for main and sub microcomputers.
Detailed procedure for adjusting idle current on the amplifier channels.
Exploded view of the packing contents and list of parts.
Exploded view of the unit's exterior parts for specific models.
General| Display | - |
|---|---|
| Product color | Black |
| Audio decoders | Dolby Digital EX, Dolby Digital Plus, Dolby Pro Logic IIz, Dolby TrueHD, DTS Neo:6, DTS-HD |
| Apple docking compatibility | iPad, iPhone, iPod |
| Impedance | 16 Ω |
| Receiver type | Surround |
| Audio output channels | 7.1 channels |
| Audio A/D Converter (ADC) | 24-bit/96kHz |
| Signal-to-Noise Ratio (SNR) | 98 dB |
| Power output per channel (1KHz@6 Ohm) | 125 W |
| Power output per channel (1KHz@8 Ohm) | 110 W |
| Power output per channel (20-20KHz@8 Ohm) | 80 W |
| HDMI in | 4 |
| Digital audio coaxial in | 1 |
| Digital audio optical in | 2 |
| Multichannel audio input type | Terminals |
| Headphone outputs | 7 |
| Headphone connectivity | 3.5 mm |
| Connectivity technology | Wired |
| Wi-Fi | No |
| Audio formats supported | AAC, MP3, WMA |
| Video formats supported | MPEG4 |
| AM band range | 530 - 1700 kHz |
| FM band range | 87.5 - 108 MHz |
| Supported radio bands | AM, FM |
| Preset stations quantity | 30 |
| AC input voltage | 120 V |
| AC input frequency | 60 Hz |
| Power consumption (standby) | 0.4 W |
| Power consumption (typical) | 500 W |
Weight and Dimensions| Depth | 362.5 mm |
|---|---|
| Width | 435 mm |
| Height | 168 mm |
| Weight | 9600 g |
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