Panasonic KX-FLM551 - 7.7. SOLENOID DRIVE SECTION; 7.8. LSU (Laser Scanning Unit) SECTION

2. Low-speed rotation
During low-speed rotation, the rotation detection does not
function.
7.7. SOLENOID DRIVE SECTION
The solenoid drive circuit controls the pick-up clutch.
The solenoid is designed to be driven by +24V, driven by IC610-79 pin.
Diode D603 protects Q615 from backward voltage when the solenoid is driven.
Mode IC606-149 pin
SOLENOID ON high level
SOLENOID OFF low level
7.8. LSU (Laser Scanning Unit) SECTION
216