- 2 -ENGLISHTable of contentsAccessories .............................................................. 2Safety precautions ................................................... 3Caution for AC Mains Lead ..................................... 3License ...................................................................... 4Control reference guide........................................... 5Power sources.......................................................... 6Using the remote control......................................... 6DEMO play ................................................................ 6Inserting media......................................................... 7About Bluetooth ® ...................................................... 7Bluetooth ® operations.............................................. 8Media playback controls.......................................... 9[D552] Listening to DAB/DAB+ ............................... 10Listening to FM radio ............................................. 12Sound adjustment .................................................. 13Clock and Timer ..................................................... 13Others...................................................................... 14Playable media ....................................................... 15Unit and media care ............................................... 15Troubleshooting ..................................................... 16Specifications ......................................................... 18AccessoriesCheck the supplied accessories before using this unit.About descriptions in these operating instructions≥ Pages to be referred to are indicated as “l ±±”.≥ Unless otherwise indicated, operations are described using theremote control. You can also use the controls on this unit if theyare the same.≥ These operating instructions are applicable to modelsRX-D552 and RX-D550. Unless otherwise indicated,illustrations in these operating instructions are of RX-D552.≥ [D552] : indicates features applicable to RX-D552 only.≥ [D550] : indicates features applicable to RX-D550 only.∏ 1 Remote control(N2QAYB001261)∏ 1 Battery for remote control∏ 2 AC mains leads[For_the_United_Kingdom_and_Ireland](K2CT2YY00146)[For_Continental_Europe](K2CQ2YY00164)≥ Please use the supplied AC mains lead suitable for thehousehold mains socket.≥ Do not use AC mains lead with other equipment.≥ Product numbers provided in these operating instructions arecorrect as of December 2020. These may be subject to change.