Show 37- machines are performing properly The reels also have to be checked for cracks or warping to assure a steady flow of tape in the machine without distortion to see that i it The tape itself has to be checked occasionally is in useable condition to be on hand for all utilization like chalk has Fresh tape 3 of the equipment i A residue of oxide from the tape accumulates on the recording j i t heads reducing the efficiency of the recorder and the clarity of the i To remedy playback this remove the plate covering the recording heads by removing the screws connecting the housing to the motor board take a pipe cleaner or cotton swab dipped in carbon tetrachloride and run it bon tetrachloride over the recording heads until they shine Allow about on the machine since it will mar spilling car-the enamel finish Avoid four or five minutes for the cleaner to dry before oper- tetrachloride will disolve recording tape 24 to machine is ready operate After the housing is replaced the 25 Clip and paste this check list inside the recorder lid ating the machine Carbon j 1 Cover the recorder when 2 Keep Daniel E Jr Audio-VisRecorders in Schools ual Care and Maintenance of Tape and Tape Guide Vol XVII—XVII I Oct 1951 IS Daniel E Jr Audio-VisRecorders in Schools Denham ual p idle the recorder away from heat and sunlight Denham p it is 18 Ibid t p IS Care and Maintenance of Tape and Tape Guide Vol XVII— XVIII Oct 1951 |