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Sony WH-CH400 Help Manual
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Sony WH-CH400 Help Manual

Wireless stereo headset
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Help Guide
Wireless Stereo Headset
WH-CH400
Use this manual if you encounter any problems, or have any questions.
Getting started
What you can do with the Bluetooth function
About voice guidance
Supplied accessories
Checking the package contents
Parts and controls
Location and function of parts
About the indicator
Power/Charging
Charging the headset
Available operating time
Checking the remaining battery charge
System requirements for battery charge using USB
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Summary of Contents for Sony WH-CH400

  • Page 1 Help Guide Wireless Stereo Headset WH-CH400 Use this manual if you encounter any problems, or have any questions. Getting started What you can do with the Bluetooth function About voice guidance Supplied accessories Checking the package contents Parts and controls...
  • Page 2 Turning on the headset Turning off the headset Making connections How to make a wireless connection to Bluetooth devices One-touch connection (NFC) compatible Android devices One-touch connection (NFC) with a smartphone (Android 4.1 or later) Disconnecting the smartphone by one touch (NFC) Switching the device by one touch (NFC) Android devices not compatible with one-touch connection (NFC) Pairing and connecting with an Android smartphone...
  • Page 3 Supported codecs Making phone calls Receiving a call Making a call Functions for a phone call Disconnecting Bluetooth connection (after use) Using the voice assist function Using the voice assist function (Google App) Using the voice assist function (Siri) Important information Precautions Trademarks Customer support websites...
  • Page 4 The Bluetooth wireless communication range is short, or the sound skips. The headset does not operate properly Cannot hear a person on a call. Low voice from callers Resetting or initializing the headset Resetting the headset Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 5: What You Can Do With The Bluetooth Function

    You can receive audio signals from a smartphone or music player to enjoy music wirelessly. Talking on the phone You can make and receive a call hands-free, while leaving your smartphone or mobile phone in your bag or pocket. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 6: About Voice Guidance

    When establishing a Bluetooth connection: “BLUETOOTH connected” When disconnecting a Bluetooth connection: “BLUETOOTH disconnected” When the remaining battery charge is low when you turn on the headset: “Battery level low” When automatically turning off due to low battery: “Please recharge headset” 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 7: Checking The Package Contents

    Numbers in ( ) indicate the item amount. Wireless Stereo Headset (1) Micro-USB cable (approx. 50 cm (19 3/4 in.)) (1) Reference Guide (1) Operating Instructions (1) Other documents (1 set) (*) May not be supplied in some countries or regions. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 8: Location And Function Of Parts

    Help Guide Wireless Stereo Headset WH-CH400 Location and function of parts Headband L mark left unit R mark right unit Slider Slide to adjust the length of the headband. Tactile dot The left unit has a tactile dot. (power/play/call) button Operate to turn on/off the headset, play music, or make a call.
  • Page 9 Related Topic About the indicator Checking the remaining battery charge 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 10: About The Indicator

    Help Guide Wireless Stereo Headset WH-CH400 About the indicator You can check various statuses of the headset by the indicators. : Turns on in blue / : Turns on in red / - : Turns off Turning on (flashes two times)
  • Page 11 When the remaining battery charge becomes low, the indicator turns from blue to red, except for pairing mode. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 12: Charging The Headset

    If the headset detects a problem while charging due to following causes, the indicator (red) may turn off although charging is not complete. In this case, charge again within the charging temperature range. If the problem persists, consult your nearest Sony dealer.
  • Page 13 Wait for a specified amount of time until the indicator (red) lights up. If the life of the built-in rechargeable battery drops significantly, the battery should be replaced. Consult your nearest Sony dealer for replacement of the rechargeable battery.

  • Page 14: Available Operating Time

    About 60 minutes of music playback is possible after 15 minutes charging. Communication time: Max. 20 hours Standby time: Max. 200 hours Note Usage hours may be different depending on the settings and conditions of use. Related Topic Supported codecs 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 15: Checking The Remaining Battery Charge

    Help Guide Wireless Stereo Headset WH-CH400 Checking the remaining battery charge You can check the remaining battery charge of the rechargeable battery. When you turn on the headset, the indicator (blue) flashes two times, then the indicator (red) flashes. The indicator (red) flashes according to the remaining battery charge as follows.
  • Page 16 E: 20% or lower (needs to charge) 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 17: System Requirements For Battery Charge Using Usb

    Windows® 8 / Windows® 8 Pro Windows® 7 Home Basic / Home Premium / Professional / Ultimate (when using Mac) Mac OS X (version 10.9 or later) Design and specifications are subject to change without notice. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 18: Turning On The Headset

    Help Guide Wireless Stereo Headset WH-CH400 Turning on the headset Press and hold the button for about 2 seconds until the indicator (blue) flashes. Related Topic Turning off the headset 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 19: Turning Off The Headset

    Help Guide Wireless Stereo Headset WH-CH400 Turning off the headset Press and hold the button for about 2 seconds until the indicator (blue) turns off. Related Topic Turning on the headset 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 20: How To Make A Wireless Connection To Bluetooth Devices

    If the device supports one-touch connection (NFC), you can just touch to perform device registration (pairing) and establish a Bluetooth connection. Connecting the headset to a registered (paired) device Once the device is registered, it is not necessary to register it again. Connect to it with an appropriate method. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 21: One-Touch Connection (Nfc) With A Smartphone (Android 4.1 Or Later)

    Help Guide Wireless Stereo Headset WH-CH400 One-touch connection (NFC) with a smartphone (Android 4.1 or later) By touching the headset with a smartphone, the headset turns on automatically and then pairs and makes a Bluetooth connection. Compatible smartphones NFC -compatible smartphones installed with Android™ 4.1 or later NFC (Near Field Communication) is a technology enabling short-range wireless communication between various devices, such as smartphones and IC tags.
  • Page 22 (One-touch connection switching). Related Topic How to make a wireless connection to Bluetooth devices Disconnecting the smartphone by one touch (NFC) Switching the device by one touch (NFC) Listening to music from a device via Bluetooth connection 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 23: Disconnecting The Smartphone By One Touch (Nfc)

    After the headset is disconnected from the smartphone, if no operation is performed for about 5 minutes, the headset turns off automatically. To turn off the headset before that, press and hold the button for about 2 seconds. You hear voice guidance, the indicator (blue) turns off, and the headset turns off. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 24: Switching The Device By One Touch (Nfc)

    When the headset is connected with an NFC-compatible smartphone, if you touch the smartphone on another NFC- compatible Bluetooth headset or Bluetooth speaker, the smartphone disconnects from the headset, and connects to the Bluetooth device it touched. Note Unlock the screen of the smartphone if it is locked. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 25: Pairing And Connecting With An Android Smartphone

    Help Guide Wireless Stereo Headset WH-CH400 Pairing and connecting with an Android smartphone Pairing is the process required to create a link between Bluetooth devices to allow wireless connection. You must pair a device with the headset to be able to make a Bluetooth connection for the first time.
  • Page 26 If they are not connected, see “Connecting to a paired Android smartphone .” If [WH-CH400] does not appear on the display, try again from step 3. A Passkey may be called “Passcode,” “PIN code,” or “Password.” Hint The above procedure is an example. For details, refer to the operating instructions supplied with your Android smartphone.
  • Page 27 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 28: Connecting To A Paired Android Smartphone

    Help Guide Wireless Stereo Headset WH-CH400 Connecting to a paired Android smartphone Unlock the screen of the Android smartphone if it is locked. Turn on the headset. Press and hold the button for about 2 seconds. Make sure that the indicator (blue) flashes after you release the button. You will hear a voice guidance “Power on”.
  • Page 29 In case that the pairing information for the headset has been deleted on the smartphone, the headset may go into pairing mode when turning on the headset. Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with an Android smartphone Listening to music from a device via Bluetooth connection 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 30: Pairing And Connecting With An Iphone

    Help Guide Wireless Stereo Headset WH-CH400 Pairing and connecting with an iPhone Pairing is the process required to create a link between Bluetooth devices to allow wireless connection. You must pair a device with the headset to be able to make a Bluetooth connection for the first time.
  • Page 31 If they are not connected, see “Connecting to a paired iPhone.” If [WH-CH400] does not appear on the display, try again from step 3. A Passkey may be called “Passcode,” “PIN code,” or “Password.” Hint The above procedure is an example. For details, refer to the operating instructions supplied with your iPhone.
  • Page 32 Listening to music from a device via Bluetooth connection Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 33: Connecting To A Paired Iphone

    Help Guide Wireless Stereo Headset WH-CH400 Connecting to a paired iPhone Unlock the screen of the iPhone if it is locked. Turn on the headset. Press and hold the button for about 2 seconds. Make sure that the indicator (blue) flashes after you release the button. You will hear a voice guidance “Power on”.
  • Page 34 In case that the pairing information for the headset has been deleted on the iPhone, the headset may go into pairing mode when turning on the headset. Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with an iPhone Listening to music from a device via Bluetooth connection 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 35: Pairing And Connecting With A Computer (Windows 10)

    Help Guide Wireless Stereo Headset WH-CH400 Pairing and connecting with a computer (Windows 10) You can register (pair) a Bluetooth compatible computer (Windows 10) and the headset with each other, and make a Bluetooth connection. You must pair a device with the headset to be able to make a Bluetooth connection for the first time.
  • Page 36 Click the [Bluetooth] tab, then click the [Bluetooth] button to turn on the Bluetooth function. Select [WH-CH400], then click [Pair]. If passkey (*) input is required on the display of the computer, input “0000.” The headset and computer are paired with each other and connected. You will hear a voice guidance...
  • Page 37 If they are not connected, refer to “Connecting to a paired computer (Windows 10).” If [WH-CH400] does not appear on the display, try again from step 3. A Passkey may be called “Passcode,” “PIN code,” or “Password.” Hint The above procedure is an example. For details, refer to the operating instructions supplied with your computer.

  • Page 38: Pairing And Connecting With A Computer (Windows 8/Windows 8.1)

    Help Guide Wireless Stereo Headset WH-CH400 Pairing and connecting with a computer (Windows 8/Windows 8.1) Pairing is the process required to create a link between Bluetooth devices to allow wireless connection. You must pair a device with the headset to be able to make a Bluetooth connection for the first time.
  • Page 39 The headset and computer are paired with each other and connected. You will hear a voice guidance “BLUETOOTH connected”. If they are not connected, see “Connecting to a paired computer (Windows 8/Windows 8.1).” If [WH-CH400] does not appear on the display, try again from step 3. A Passkey may be called “Passcode,” “PIN code,” or “Password.”...
  • Page 40 How to make a wireless connection to Bluetooth devices Connecting to a paired computer (Windows 8/Windows 8.1) Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 41: Pairing And Connecting With A Computer (Windows 7)

    Help Guide Wireless Stereo Headset WH-CH400 Pairing and connecting with a computer (Windows 7) Pairing is the process required to create a link between Bluetooth devices to allow wireless connection. You must pair a device with the headset to be able to make a Bluetooth connection for the first time.
  • Page 42 If they are not connected, see “Connecting to a paired computer (Windows 7).” If [WH-CH400] does not appear on the display, try again from step 3. A Passkey may be called “Passcode,” “PIN code,” or “Password.” Hint The above procedure is an example. For details, refer to the operating instructions supplied with your computer.
  • Page 43 How to make a wireless connection to Bluetooth devices Connecting to a paired computer (Windows 7) Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 44: Connecting To A Paired Computer (Windows 10)

    If the computer has connected to the last Bluetooth device connected, disconnect it, then proceed to the next step. Select the headset using the computer. Right-click the volume icon on the windows toolbar, then click [Playback devices]. Right-click [WH-CH400]. If [WH-CH400] is not displayed, right-click on the [Sound] screen, then select [Show Disabled Devices].
  • Page 45 Click [Connect]. The connection is established. Hint The above procedure is an example. For details, refer to the operating instructions supplied with your computer.
  • Page 46 Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with a computer (Windows 10) Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 47: Connecting To A Paired Computer (Windows 8/Windows 8.1)

    Help Guide Wireless Stereo Headset WH-CH400 Connecting to a paired computer (Windows 8/Windows 8.1) Before starting the operation, make sure of the following: Depending on the computer, you need to turn on the built-in Bluetooth adaptor. For whether or not a Bluetooth adaptor is incorporated, and for how to turn it on, refer to the operating instructions supplied with the computer.
  • Page 48 Select [Hardware and Sound], then [Devices and Printers]. Right-click [WH-CH400]. If [WH-CH400] is not displayed on the [Sound] screen, right-click on the [Sound] screen, then select [Show Disabled Devices]. Select [Connect] from the displayed menu.
  • Page 49 Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with a computer (Windows 8/Windows 8.1) Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 50: Connecting To A Paired Computer (Windows 7)

    If the computer has connected to the last Bluetooth device connected, disconnect it, then proceed to the next step. Select the headset using the computer. Click the [Start] button, then [Devices and Printers]. Double-click [WH-CH400] of the device. Click [Listen to Music].
  • Page 51 Related Topic How to make a wireless connection to Bluetooth devices Pairing and connecting with a computer (Windows 7) Listening to music from a device via Bluetooth connection Disconnecting Bluetooth connection (after use) 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 52: Pairing And Connecting With Other Bluetooth Devices

    “BLUETOOTH pairing”. Perform the pairing procedure on the Bluetooth device to search for this headset. [WH-CH400] will be displayed on the list of detected devices on the screen of the Bluetooth device. If it is not displayed, repeat from step 1.
  • Page 53 The headset can be paired with multiple devices, but can only play music from one paired device at a time. Related Topic How to make a wireless connection to Bluetooth devices Connecting to a paired Bluetooth device Listening to music from a device via Bluetooth connection Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 54: Connecting To A Paired Bluetooth Device

    Help Guide Wireless Stereo Headset WH-CH400 Connecting to a paired Bluetooth device Turn on the headset. button for about 2 seconds. Press and hold the Make sure that the indicator (blue) flashes after you release the button. You will hear a voice guidance “Power on”.
  • Page 55 Pairing and connecting with other Bluetooth devices Listening to music from a device via Bluetooth connection 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 56: Disconnecting Bluetooth Connection (After Use)

    You will hear a voice guidance “Power off”. Hint When you finish playing music, the Bluetooth connection may terminate automatically depending on the Bluetooth device. Related Topic Disconnecting the smartphone by one touch (NFC) Turning off the headset 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 57 Help Guide Wireless Stereo Headset WH-CH400 Listening to music from a device via Bluetooth connection If your Bluetooth device supports the following profiles, you can enjoy listening to music and perform basic remote control operation of the Bluetooth device via a Bluetooth connection.
  • Page 58 If the communication condition is poor, the Bluetooth device may react incorrectly to the operation on the headset. Related Topic How to make a wireless connection to Bluetooth devices Controlling the audio device (Bluetooth connection) 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 59: Controlling The Audio Device (Bluetooth Connection)

    If the communication condition is poor, the Bluetooth device may react incorrectly to the operation on the headset. The available functions may vary depending on the Bluetooth device. When you operate as illustrated above, it may operate differently or may not work at all. 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 60 You will hear a voice guidance “Power off”. Hint When you finish playing music, the Bluetooth connection may terminate automatically depending on the Bluetooth device. Related Topic Disconnecting the smartphone by one touch (NFC) Turning off the headset 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 61: Supported Codecs

    This is the standard audio coding technology used by Bluetooth devices. All Bluetooth devices support SBC. This is an abbreviation for Advanced Audio Coding. AAC is mainly used by Apple products such as iPhones, and it provides higher sound quality than that of SBC. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 62: Receiving A Call

    Help Guide Wireless Stereo Headset WH-CH400 Receiving a call You can enjoy a hands-free call with a smartphone or mobile phone that supports the Bluetooth profile HFP (Hands-free Profile) or HSP (Headset Profile), via a Bluetooth connection. If your smartphone or mobile phone supports both HFP and HSP, set it to HFP.
  • Page 63 Use a smartphone or mobile phone at least 50 cm away from the headset. Noise may result if the headset and the smartphone or mobile phone are too close. Related Topic How to make a wireless connection to Bluetooth devices Making a call Functions for a phone call 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 64: Making A Call

    Help Guide Wireless Stereo Headset WH-CH400 Making a call You can enjoy a hands-free call with a smartphone or mobile phone that supports the Bluetooth profile HFP (Hands-free Profile) or HSP (Headset Profile), via a Bluetooth connection. If your smartphone or mobile phone supports both HFP and HSP, set it to HFP.
  • Page 65 Related Topic How to make a wireless connection to Bluetooth devices Receiving a call Functions for a phone call 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 66: Functions For A Phone Call

    Incoming call Press the button once to answer a call. During call Press the button once to finish a call. (*) Some devices may not support this function. Related Topic Receiving a call Making a call 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 67 You will hear a voice guidance “Power off”. Hint When you finish playing music, the Bluetooth connection may terminate automatically depending on the Bluetooth device. Related Topic Disconnecting the smartphone by one touch (NFC) Turning off the headset 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 68 After activating the Google App, when a certain time has passed without requests, a beep will sound and the Google App will be deactivated. Note The Google App cannot be activated when you say “OK Google” through the headset’s microphone even when the Android smartphone’s [OK Google] setting is on. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 69: Using The Voice Assist Function (Siri)

    After activating Siri, when a certain time has passed without requests, a beep will sound and Siri will be deactivated. Note Siri cannot be activated when you say “Hey Siri” through the headset’s microphone even when the iPhone’s [Allow “Hey Siri”] setting is on. 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 70 Help Guide Wireless Stereo Headset WH-CH400 Precautions On Bluetooth communications Bluetooth wireless technology operates within a range of about 10 m (30 feet). Maximum communication range may vary depending on obstacles (the human body, metal, walls, etc.) or electromagnetic environments.
  • Page 71 If you experience discomfort after using the headset, stop using the headset immediately. The earpads may deteriorate due to long term storage or use. If you have any questions or problems concerning this headset that are not covered in this manual, please consult your nearest Sony dealer. 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 72 The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Sony Corporation is under license. The N-Mark is a trademark or registered trademark of NFC Forum, Inc. in the United States and in other countries.

  • Page 73: Customer Support Websites

    Please access the following support website to get the support information about your headset: For customers in the U.S.A: http://esupport.sony.com/ For customers in Canada: http://esupport.sony.com/CA/ For customers in Latin America: http://esupport.sony.com/LA/ For customers in European countries: www.sony.eu/support For customers in China: https://service.sony.com.cn/ For customers in other countries/regions: http://www.sony-asia.com/ 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 74: What Can I Do To Solve A Problem

    Initialize the headset. This operation resets volume settings, etc., and deletes all pairing information. Look up information on the issue on the customer support website. If the operations above do not work, consult your nearest Sony dealer. Related Topic Charging the headset...

  • Page 75: The Headset Is Not Turned On

    Make sure the battery is charged enough to turn the headset on. The headset cannot be turned on while charging the battery. Remove the micro-USB cable from the headset, and then turn on the headset again. Related Topic Charging the headset Checking the remaining battery charge 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 76: Charging Cannot Be Done

    Make sure that the USB AC adaptor is firmly connected to the AC outlet. Check that the computer is turned on. Check that the computer is not in standby, sleep or hibernation mode. When using Windows 8.1, update using Windows Update. Related Topic Charging the headset 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 77: Charging Time Is Too Long

    Help Guide Wireless Stereo Headset WH-CH400 Charging time is too long. Check that the headset and the computer are directly connected, not via a USB hub. Related Topic Charging the headset 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 78: The Headset Cannot Be Recognized By A Computer

    A problem may have occurred with the connected USB port of the computer. Connect to another USB port if it is available. Try the USB connection procedure again in cases other than those stated above. 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 79 The remaining battery charge is shown only on the screen of an iPhone or iPod touch (iOS 5.0 or later) that supports HFP (Hands-free Profile). Make sure that the iPhone or iPod touch is connected with HFP (Hands-free Profile). Otherwise, the remaining battery charge will not be displayed correctly. Related Topic Checking the remaining battery charge 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 80 If you are connecting a computer to the headset, make sure the audio output setting of the computer is set for a Bluetooth device. Pair the headset and the Bluetooth device again. Related Topic How to make a wireless connection to Bluetooth devices Listening to music from a device via Bluetooth connection 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 81: Low Sound Level

    Help Guide Wireless Stereo Headset WH-CH400 Low sound level Turn up the volume of the headset and the connected device. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 82: Low Sound Quality

    If the sound quality does not improve after a few seconds, press the button on the headset once during playback. Or, operate the computer to make an A2DP connection. Refer to the operating instructions supplied with your computer for computer operation. 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 83 Use this headset and the Bluetooth device as near to each other as possible. If you are enjoying music with your smartphone, the situation may be improved by shutting down unnecessary apps or restarting your smartphone. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 84: Pairing Cannot Be Done

    In this case, delete the pairing information of the headset from the device, and then pair them again. Related Topic About the indicator How to make a wireless connection to Bluetooth devices Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 85 You cannot make a one-touch connection (NFC) while charging the battery because the headset cannot be turned on. Finish charging first, and then make the one-touch connection (NFC). Related Topic One-touch connection (NFC) with a smartphone (Android 4.1 or later) 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 86: Unable To Make A Bluetooth Connection

    In case that the pairing information for the headset has been deleted on the connected device, pair the headset with the device again. Related Topic About the indicator How to make a wireless connection to Bluetooth devices 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 87: Distorted Sound

    Help Guide Wireless Stereo Headset WH-CH400 Distorted sound Keep the headset away from a microwave oven, Wi-Fi device, etc. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 88: The Bluetooth Wireless Communication Range Is Short, Or The Sound Skips

    Install this headset and the Bluetooth device as near to each other as possible. If you are enjoying music with your smartphone, the situation may be improved by shutting down unnecessary apps or restarting your smartphone. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 89: The Headset Does Not Operate Properly

    Reset the headset. Pairing information is not deleted by this operation. If you cannot use the headset even after resetting it, initialize the headset. Related Topic Resetting the headset Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...
  • Page 90 While listening to music with the headset, stop playback and press the button to respond to an incoming call. Related Topic How to make a wireless connection to Bluetooth devices Receiving a call Making a call 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 91: Low Voice From Callers

    Help Guide Wireless Stereo Headset WH-CH400 Low voice from callers Turn up the volume of the headset and the connected device. 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 92: Resetting The Headset

    Pairing information and other settings are not deleted by this operation. If the headset does not operate correctly even after resetting, initialize the headset to restore factory settings. Related Topic Initializing the headset to restore factory settings 4-730-303-11(2) Copyright 2018 Sony Corporation...

  • Page 93: Initializing The Headset To Restore Factory Settings

    This operation resets volume settings, etc., and deletes all pairing information. In this case, delete the pairing information of the headset from the Bluetooth device, and then pair them again. If the headset does not operate correctly even after initializing, consult your nearest Sony dealer. 4-730-303-11(2) Copyright 2018 Sony Corporation...

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