Sony Betacam SX DNW-A100 Maintenance Manual

4-17DNW-A100/A50/A45DNW-A100P/A50P/A45PC002 : TOP/END SENSORThis submenu checks the functions of a tape top sensor and tape end sensor.(1) Bring a metallic screwdriver near each sensor.. Check that the characters below the corresponding sensor changes from“OFF” to “ON!”.cNever bring the screwdriver into contact with each sensor.(2) Keep the screwdriver away from each sensor.. Check that the characters below the corresponding sensor return from “ON!”to “OFF”.(3) Press the MENU button when terminating the check.In case of NG. Check each sensor itself.. Check the oscillator and detection circuit (on the MS-50 board) for sensors.. Check the sensor input port (IC115 on the SS-63 board).Locations of Tape Top and Tape End SensorsTape top sensorTape end sensorSERVO CHECKINPUT CHECKC002:TOP/END SENS0REND TOPSENSOR SENSOROFF OFFSERVO CHECKINPUT CHECKC002:TOP/END SENS0REND TOPSENSOR SENSOROFF ON!(Ex.)4-2. TAPE Maintenance Mode (M0)4-2-2. SERVO CHECK Mode (C0)