Panasonic KX-FG2452CX Service Manual page 28

KX-FG2452CX
When the motor suspends while it is in the receive mode (about 70~80 msec), pin 124 of ASIC IC501 becomes a low level and
Q403 turns OFF. Then Q402 also turns OFF, and instead of +24 V, +6 V is supplied through D401 so that the motor is held in
place. When the system is in the stand-by mode, all of the motor drive transistors turn OFF. Consequently, the motor current
stops.
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