Sony DNW-A220, Руководство по обслуживанию

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3-17
DNW-A220
DNW-A220P
C002 : TOP/END SENSOR
This submenu checks the functions of a tape top sensor and tape end sensor.
(1) Bring a metallic screwdriver near each sensor.
. Confirm that the characters below the corresponding sensor change from
“OFF” to “ON!”.
c
Never bring the screwdriver into contact with each sensor.
(2) Keep the screwdriver away from each sensor.
. Confirm that the characters below the corresponding sensor return from
“ON!” to “OFF”.
(3) Push the MENU button when terminating the check.
In case of NG
. Check each sensor itself.
. Check the oscillator and detection circuit (IC405 on the SV-194 board) for
sensors.
.
Check the sensor input port of CPU (IC116 on the SV-194 board).
Locations of Tape Top and Tape End Sensors
3-2. TAPE Maintenance Mode (M0)
3-2-2. SERVO CHECK Mode (C0)
INPUT CHECK
C002:TOP/END SENS0R
END TOP
SENSOR SENSOR
OFF OFF
INPUT CHECK
C002:TOP/END SENS0R
END TOP
SENSOR SENSOR
OFF ON!
(Ex.)
Tape end sensor
Tape top sensor