Marantz SD4050 SD4050 User Guide - Page 12

ENGLISH FRANÇAIS DOLBY HX PRO HEADROOM EXTENSION SYSTEM This deck is equipped with the Dolby HX PRO headroom extension system. Since the system functions automatically during recording, no switching operation or adjustment is required. The system is effective with any type of Normal, High and Metal tape. The Dolby HX PRO headroom extension system functions during recording to raise the saturation level in the high frequency range. Therefore, most of the high frequency range distorted or lost during recording on conventional cassette decks are more faithfully recorded on the new MARANTZ cassette deck. MAINTENANCE í Head cleaning After long usage, tape coating material or dust may adhere to the heads, causing deterioration of sound. Therefore, the parts depicted in the illustration should be cleaned reguraly. Use a cotton swab moistened with a tape head cleaning solution (such as alcohol). Note: 1. Some cleaning cassettes on the market have strong abrasive effects and may scratch the heads. Always use cotton swabs instead of cleaning cassettes. 2. Since the use of metal tape is apt to collect more dust on the heads, the heads should be cleaned more often to enjoy the best possible sound. Features of the Dolby HX PRO Headroom Extension System (1) Performance of Normal and High Position tapes can be improved to very close of that offered by Metal tape. (2) The dynamics in the high frequency range are improved significantly. (3) Since no decoding is necessary during playback, the improved sound can be enjoyed on any type of tape deck, including portable players and car aud io systems. (4) The system functions whether the Dolby B/C NR system is engaged or not. í Cleaning the Pinch Rollers and Capstans If the pinch roller or capstans accumulate dust, tape transport may become unstable, as a result from slippage, during recording or playback. The tape can also be damaged if it gets entangled in the capstan. Clean these parts with a cotton swab or a soft cloth moistened with a tape head cleaning solution (such as alcohol). í Demagnetizing the Heads The heads may become magnetized after long usage or if storongly magnetized objects are brought near them. The result is a generation of noise, loss of the high frequency range, and in extreme cases erasure of the high frequency part on pre-recorded tapes in combination with added noise. Thus, the heads should be demagnetized at regular intervals. (Head demagnetizers are sparately available from your dealer.) í How to Demagnetize the Tape Heads 1. Turn off the power. 2. Turn on the demagnetizer while it is at least 30 cm away from the heads. Bring the demagnetizer near the heads and slowly move it in small circles four or five times in front of each head, making sure you do not touch them. 3. Slowly move the demagnetizer away and turn it off when it is at least 30 cm away from the heads. 4. For more details, please read the User Guide provided with the demagnetizer (optional). í CAPABILITY OF REMOTE CONTROL PLAY ( ) FF ( ) REW ( ) PAUSE ( ) STOP ( ) REC REC MUTE COUNTER RESET DECK A DECK B DIRECTION ( ) RC-5 CODE 1853 1852 1850 1848 1854 1855 1842 1849 1844 1846 1847 12