10. Lamps (monthly). Check functional operation of lamps. Refer to EDPM
CEM 86 for proper resistance values.
11. Tape drive maintenance with tape tester (one unit per shift). Follow this
check list as closely as possible when removing a tape unit from the system. For
additional information, see CEM 180.
11a. Check start-stop time (forward, backward).
l i b . Check high-speed rewind (including total rewind time, starting at
critical point, creeping of machine reel, and tape break circuitry).
11c. Clean the column, head, capstans, idlers, and so on.
l i d . Check the vacuum columns (including the bellow switch, column
switches, and flapper valve switch.
12. Tape drive maintenance with tape tester (monthly). Check the forw ard-
reverse magnet transfer time, the friction drive clutch (being sure it is clean), and
the air filters. In addition, perform any other tests scheduled on a monthly basis,
which may be perform ed suitably with the tape unit removed from the system.
64
Содержание 727
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Страница 93: ...039 0035 FIGURE 1 BIT PO SITIO N S O N TAPE CURRENT GENERATOR FIGURE 3c...
Страница 95: ...w PATH OF TAPE THROUGH MACHINE FIGURE 6...
Страница 97: ...SPLIT IDLER ASSEMBLY FIGURE 8...
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Страница 99: ...CLUTCH HOUSING POWDERED IRON AND GRAPHITE MIXTURE FIGURE 10 MAGNETIC CLUTCH...
Страница 100: ...PUSH ROD DIAPHRAGM VACUUM COLUMN SWITCHES FIGURE II...
Страница 101: ...BACKWARD MOTOR CAPSTAN MOTOR FORWARD MOTOR...
Страница 102: ...LATCH FIGURE f3...
Страница 103: ...140 140...
Страница 107: ...FIGURE 18 HEAD ASSEMBLY A DJUSTM ENTS...
Страница 108: ...TAPE C LEA N ER FIG URE 19...
Страница 109: ...VACUUM COLUMN ADJUSTMENT FIG U RE 22...
Страница 110: ...DRIVE MOTOR PULLEY CAPSTAN DRIVE BELT TENSION FIGURE 23 REAR VIEW S...
Страница 113: ...CONTROL UNIT TAPE DRIVE TESTER FIGURE 28 TAPE DRIVE TESTER CO NN EC TIO N S...
Страница 116: ...FIGURE 32 HIGH SPEED REWIND...
Страница 129: ...A Capstan Out 13 16 iS i Aftr _ V 1 im m 1 W F B Capstan Retracted FIGURE 33 CAPSTAN DRIVE M O TO R 727 MODEL III...
Страница 130: ...Right Capstan Motor Bottom View Sensing Switch Assy Capstan Out FIGURE 34 CAPSTAN SEN SIN G SW ITCHES 727 MODEL III...
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