Delmonico-4TR20S-tape-sm维修电路原理图.pdf

PnoTo FAcr FolJt i.iiiilri:i:fi ,iiiii# L1.1.r1r.:ii: d, llr o J o t! s F ur t/t DETMONTCO (TAPE DECK) MODET 4TR-2OS TRADE NAME Delmonico Model 4TR-20S SUPPLIER Delmonico International Corp. , 120-20 Roosevelt Ave., New York 68, New York TYPE SET Two Speed AC Operated, Four Track Stereo Tape Deck POWER SUPPLY 110 - 11? Volts AC, 60 Cycles FUNCTION OF CONTROLS l YI el Erl 6 ral H EI gH latr trt 6 -2 Record Lock Depress to lock amplifier in the Record position. Quick Stop Pull the lever toward the front ofthe deck to stop tape motion momentarily. Speed Selector Depress for 7 l/ 2 ips and up for 3 3/4 ips. Function Selector Selects the mode of operation, Rewind, Play Record, or Fast Forward. Fast Forward Lock Depress and turn the Function Selector to Play Record to advance tape rapidly. Power Switch Turns the power on and off to the tape deck. CLEANING Pressure roller (2), capstan, play-record head (5), erase head (20), and tape guides (19), accumu- late tape oxide coating, which wears off the tape as it passes these parts. Use a soft cloth dipped in alcohql to remove this accumulation. HCDWARD W. SAlulS & tG(O., The listing of any available replacement part herein does not constitute in any case a recommendation, warranty or guaranty by Howard W. Sams & Co., Inc., as to the quality and suitability of such replacement part. The numbers of these parts have been compiled from information fwnished to Howard W. Sams & Co., Inc., by the manufacturers of the particular type of replacement part listed. MN304 Volume Inner knob regulates the volume on the left chan- nel and the outer knob regulates the volume on the right channel. Selector Selects the recording or playbaek tracks, Stereo- Mono 1-4, or Mono 2-3. Microphone Insert microphone or microphones into these jacks when making a recording. Record Level Meters Tpo metersare provided to indicate thecorrect recordinglevel. One for left channel andone for right channel. LU BR I CATION AII sliding levers should be cleaned occasionally andlubricated with a nonhardening grease. This motor bearings should be lubrlcated with one or two drops of good motor oil. I tf G. lndianapolis i, lndiana Reproduction or use, without express permission, of editorial or pictorial content, in any manner, is prohibited. No patent liability is assumed with respect to the use of the information contained herein. O 1963 Howard W. Sams & Co., Inc., Indianapolis 6, Indiana. Printed in U. S. of America vl m - o. o. o. TI o l- g m n o 6DATE II -63sET 666 FOTDER RadioFans.CN 收音机爱 好者资料库 OPERATI NG I NSTRUCTI ONS To Record 1. Plaee a reel of tape on the supply (feft) spin- dle and thread the tape from left to right 2. Select the desired speed. 3. Connect the sound source to the tape deck am- plifier. 4. Select the proper tracks to record onl Stereo Mon. l-4, or Mon. 2-3. 5. Depress the Record Lock and turn the Function Selector to Play-Record simultaneously. 6. Turn volume control(s) until the record level meter(s) fluctuate in the correct area of the meter(s). 7. To stop recording, return Function Selector to the Stop position. Ravind Turn Function Selector to Rewind to rewind the tape onto the supply reel Fast Forward Depress the Fast Forward Lock and simultan- eously turn the Function Seleetor to play-Record po- sition to advance the tape to a desired spot rapidly. Playing a Recorded Tape 1. Place the reel of tape on the supply spindle (left) and thread the tape from left to right. 2. Select the correct speed. 3. Turn Selector to the positionwhich corresponds to the tape. 4. Turn Function Seleetor toPlay-Record position. 5. Adjust the volume control(s)to desired listening level. Eras i ng Recorded Material Any recording is automatically erased before a new recording is put on the tape when it is in Record position. To erase a recording without putting new material on the tape, proceed as follows: 1. Thread the tape. 2. Turn Selector to tracks to be erased. 3. Turn the volume control to its minimum counter- c,lockwise position. 4. Depress the Reeord Lock and simultaneously turn Function Selector to Play-Record position. 5. Use same procedure to erase the remaining tracks if so desired. Qua rter-T rack Recordi ng One-fourth of the tape width ls recorded at a time, thereby resulting in four-track recording. This four-track recording is aceomplished in the following manner: 1. Thread the tape. 2. Turn Selector to Mono. 1-4. 3. Proceed as described under To Record. 4. Afterthe flrsttrack isrecorded, andall thetape wound onto the takeup reel, return the Function Selector to StoP. 5. Remove the reels, turn them over, place tte full reel on the supply (tett) splndle, rethread, the tape and continue the recording. 6. After this track, which is track 4, is recorded, return the Function Selector to Stop. 7. Turn the Selector to Mono. 2-3. 8. Remove the reels, turn them over, place the full reel on the supply (left) spindle,. rethread the tape, and continue the recording. 9. After this track, whlch is track 2, ls recorded, turn the Frietion Selector to Stop. 10. Remove the reels, turn them over, place the full reel on the supply (left) spindle, rethread the tape, and contlnue recording. 11. The tape may be played back in the same man- ner. ADJUSTMENTS Play-Record Head The recording head (5) must be aligned with the tape. If it is not, low output, loss of high frequencies, or track overlap may result. To align the head, ad- iust as follows: 1. Thread an alignment tape onto the recorder. 2. Adjust the three spring-Ioaded mounting screws until the top of the tape is aligned evenly with the top edge of the record head lamination. 3. To adjust for maximum freguency response, adjust the two front spring-loaded screws. 4. Recheck the head height. Erase Head 1. Thread a tape onto the recorder. 2 Adjust the three sprtng-loaded screws until the erase head is parallel with the tape and the top edge of the tape is aligned evenly with the top edge of the erase head lamination. RadioFans.CN 收音机爱 好者资料库