Brand: SONY
Category: Audio
Document Type: Manual
Language: EN
Manual for D-50MKII
Uploaded: Nov. 21, 2025, 6:34 p.m.
Manual Publish Date: 1986-03
Warranty Information
None
- Extremely compact size for easy carrying
- High performance and high fidelity
- AMS (Automatic Music Sensor) for quick location of selections
- Search function for quick location of a desired point in a particular selection
- RMS (Random Music Sensor) allows selections to be played in a specified order.
- Shuffle-play function repeatedly plays selections in a random order.
- Repeat functions for the whole disc and for a particular portion
- Digital readout display-the track number on the disc and the elapsed or remaining playing time are shown on the LCD (Liquid Crystal Display) window.
Troubleshooting and error codes
| Issue | Possible Causes | Solutions |
|---|---|---|
| Disc play does not start. | The POWER switch is set to OFF. | Set the POWER switch to ON. |
| The disc is inserted with the labeled surface face down. | Insert the disc with the labeled surface face up. | |
| The disc is incorrectly inserted. | Insert the disc correctly. | |
| Dusty or defective disc | Clean or replace the disc. | |
| Dirty or dusty lens | Clean the lens. | |
| The disc compartment lid is not closed. | Close the disc compartment lid firmly. | |
| Moisture condensation | Allow the unit to acclimatize. | |
| The ac power adaptor is not plugged to the wall outlet. | Plug in the ac power adaptor. | |
| Weak battery | Replace batteries or recharge the battery pack. | |
| The car battery cord is not firmly connected. | Ensure the car battery cord is firmly connected. | |
| No sound from headphones | The headphones plug is not firmly connected to the PHONES jack. | Ensure the headphones plug is firmly connected to the PHONES jack. |
| No sound from speakers | Incorrect connections | Check speaker connections. |
| The amplifier is not turned on. | Turn on the amplifier. | |
| Skipping of sound | Dirty or defective disc | Clean or replace the disc. |
| Dirty lens | Clean the lens. | |
| Strong vibration | Place the unit on a stable surface. |