Brand: JVC
Category: Audio System
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for KD-X38MBS / KD-X280BT / KD-XD28BT / KD-SX27BT
Uploaded: Nov. 21, 2025, 7:51 p.m.
Warranty Information
Warranty information is not explicitly stated in the provided pages.
Basics
- Turn on the power: Press SRC.
- Adjust the volume: Turn the volume knob. Press the knob to mute/pause.
- Select a source: Press SRC repeatedly.
- Change display information: Press
repeatedly.
Getting Started
Acknowledge crossover and cancel demo: Turn on power for the first time. Follow on-screen prompts using the volume knob.
Set clock and date: Press and hold ⊙. Select [CLOCK], [CLOCK ADJUST], [CLOCK FORMAT], then set date and time using the volume knob.
Set basic settings: Press and hold ⊙. Select items and adjust using the volume knob.
Radio
Search for a station: Press SRC for FM/AM. Press 
to search automatically or press and hold 
for manual search.
Store a station: Press and hold number buttons (1-6) or press and hold volume knob, select preset, then press knob.
Troubleshooting and error codes
| Symptom | Solution |
| No sound | Adjust volume. Inspect cables. Check speaker wire terminals. |
| "PROTECTING SEND SERVICE" | Contact service center. |
| Source cannot be selected | Check [SOURCE SELECT] setting. Reset unit. |
| Unit does not work | Reset unit. |
| Incorrect characters displayed | Unit displays limited characters. Language selection may affect display. |
| Poor radio reception | Connect antenna firmly. |
| Playback order incorrect | USB: Folder order based on creation date, file order alphabetically. Check recording process. |
| Playback time incorrect | Depends on previous recording process (USB). |
| "NOT SUPPORT" and file skipped | Check if file format is reproducible. Avoid excessive folder hierarchy. Reconnect device. |
| "READING" message blinking | Reconnect device (USB/iPod/iPhone). |
| "UNSUPPORTED DEVICE" | Check USB compatibility and file system. Reconnect USB. |
| "UNRESPONSIVE DEVICE" | Check USB for malfunction. Reconnect USB. |
| "USB HUB IS NOT SUPPORTED" | Cannot connect USB via hub. |
| "CANNOT PLAY" | Connect USB with playable audio files. |
| Cannot switch to "USB" | USB power output may be too high. Turn off, disconnect USB, reconnect. If problem persists, turn off/reset before reconnecting. |
| iPod/iPhone not turning on/working | Check connection. Force restart iPod/iPhone. |
| "LOADING" when accessing search | Unit is preparing iPod/iPhone music list. Wait or try again. |
| "NO DEVICE" | Connect USB/iPod/iPhone and switch to USB/iPod source. |
| "iPod ERROR" | Reconnect iPod. Restart iPod. Turn unit off and on. |
| "MEMORY FULL" | iPod/iPhone storage limit reached. |
| Bluetooth: No device detected | Search for Bluetooth device again. Reset unit. |
| Bluetooth: Pairing impossible | Ensure PIN is the same on unit and device. Remove pairing info, then re-pair. |
| Bluetooth: Noise/echo during call | Adjust microphone position. Check [ECHO CANCEL]. |
| Bluetooth: Poor call quality | Reduce distance to unit/device. Move to area with better signal. |
| Bluetooth: Call sound not through speakers | Press  during call to switch between hands-free and private mode. |
| Bluetooth: Voice command not working | Use in quiet environment. Reduce distance to microphone. Use consistent voice for voice tags. |
| Bluetooth: Sound interrupted/skipped | Reduce distance between unit and Bluetooth audio player. Turn unit off/on, reconnect. Other devices may be connecting. |
| Bluetooth: Cannot control player | Check if player is compatible with AVRCP. Disconnect/reconnect player. |
| Bluetooth: "PLEASE WAIT" | Unit is preparing for Bluetooth. Turn unit off/on if message persists. |
| Bluetooth: "NOT SUPPORT" | Connected phone not compatible with voice recognition/phonebook transfer. |
| Bluetooth: "NO ENTRY" | No registered Bluetooth device found. |
| Bluetooth: "NO INFO"/"NO DATA" | Bluetooth device cannot get contact info. |
| Bluetooth: "ERROR" | Reinitialize unit. Check compatibility. |
| Bluetooth: "H/W ERROR" | Reinitialize unit. Contact service center if error persists. |
| Bluetooth: "SWITCHING NG" | Connected phones not compatible with phone switching. |
| Bluetooth connection unstable | Remove unused registered Bluetooth devices. |
| SiriusXM: "CH LOCKED LOCK CODE?" | Enter correct unlock code. |
| SiriusXM: "CHAN UNSUB" | Channel unsubscribed. Subscribe by calling provided number. |
| SiriusXM: "CH UNAVAIL" | Channel unavailable. Visit siriusxm.com for details. |
| SiriusXM: "CHECK ANTENNA" | Check antenna connection. |
| SiriusXM: "CHECK TUNER" | Ensure SiriusXM tuner is connected. |
| SiriusXM: "NO SIGNAL" | Antenna not mounted outside. |
| SiriusXM: "SUBSCRIPTION UPDATED – PRESS ENTER TO CONTINUE." | Subscription updated. Press volume knob to continue. |
| SiriusXM: "CODE ERROR" | Incorrect access code entered. |
| SiriusXM: "NO CONTENT" | Insufficient content for TuneScan. |
| SiriusXM: "SCAN CANCEL" | TuneScan canceled. |