Brand: HITACHI
Category: Audio
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for AX-M140
Uploaded: Nov. 21, 2025, 6:53 p.m.
Warranty Information
No specific warranty period is detailed in this section of the manual.
Basic Operation
- Power On/Off: Press the STANDBY button to turn the system on or off (Standby Mode).
- Disc Playback: Press the DVD function button, then the open/close button to open the tray, place disc, and close. Press play/pause to start playback. Use stop/return to stop.
- Volume Control: Use the volume up/down buttons or the volume knob.
- Mute: Press the MUTE button to temporarily silence sound.
- Bass/Treble: Adjust using the BASS and TREBLE controls.
- Equalizer: Press P-EQ to cycle through preset equalizations (POPS, JAZZ, CLASSIC, ROCK).
- Radio (DAB/FM): Press the DAB/FM button to select tuner. Use 'Auto Tune' or manual selection. Storing stations: press and hold preset buttons 0-9.
- MP3 Player: Press MP3 function button. Use playback controls and menu options for file management and playback.
- Recording: Use the REC button to select record mode and CONFIRM to start.
- Clock/Timers: Use CLOCK button to set time. Use SLEEP/TIMER for daily or sleep timer functions.
Troubleshooting and error codes
| Symptom | Possible Cause | Action |
|---|---|---|
| No sound is heard | Connections are incorrect, or loose TV or power amplifier operates wrong The amplifier's receiving signal position is wrong |
Check all connections and make corrections Check whether the operation is right Check the position of receive signal |
| No picture | Volume setting to minimum Connect wrong or loose TV Operation and setting is wrong |
Adjust volume Check all connection and correct it Check whether operation and setting is right |
| Bad sound quality | Audio connect wrong Audio output mode setting wrong |
Check whether audio connection is right Check whether audio output setting is right |
| The disc does not play | No disc in the tray The disc is upside down The disc is dirty or scratched The unit is foggy inside |
Place a disc Place the disc in with the printed side up Clean or replace the disc Take out the disc, turn on the unit for about an hour |
| Poor radio reception | The antenna is disconnected The path between the remote control and the sensor on the unit is blocked |
Reconnect the antenna securely Remove the obstruction |
| Unable to operate the remote control | The batteries have lost their charge | Replace the batteries |
| Operations are disabled | The built-in microprocessor has malfunctioned due to external electrical interference | Unplug the system then plug it back in |