Sony UP-960, Руководство по обслуживанию

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4-10 UP-960(UC)
UP-960CE(CE)
4-4-5. Door Open and Close Control
Open and close motor of the door is driven by IC403. Correct rotation and reverse rotation are possible. And their controls
are performed by IC505 pins 99 and 100. Door position is detected by optical type door position sensors (SE-442 board
PH401, 402) and read by IC505 pins 84 and 85.
Operation of Door Open and Close
Door motor IC505-100pin IC505-99pin Operation
NEUTRAL L L Neutral
CLOSE L H Door is shut.
OPEN H L Door is opened.
STOP H H Stopped
Condition of Door Position Sensor
Door position sensor IC505-85pin IC505-84pin Condition
CLOSE L L Door is shut.
OPEN H L Door is opened.
In case the door is shut, to judge whether door is completely shut or not, door position sensor detects and door lock sensor
circuit (MA-91 board IC404 peripheral circuit) that is driving current detection type also detects and read by IC505 pin 87.
Condition of Door Lock Sensor
Door lock sensor IC505-87pin Condition
CLOSE H Door is shut.
OPEN L Door is opened.