Manual. View the manual for the Sherwood RX-4503 here, for free. This user manual comes under the category Receivers and has been rated by 1 people with anAudio manuals and audio service pdf instructions. Find the user manual you need for your audio device and more at ManualsOnline. RX-4503(A) 2008.8.12 3:43 PM 페이지 3 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5.