JVC XM-P55, Service Manual

Page: 6 / 78

XM-P55
XM-PJ1
2-4
Pin Functions
Pin
No.
Pin Name Functions
Non connection
Detection of motor current
Motor driven power supply
Non connection
Connect first condenser of charge pump to this terminal.
Connect first condenser of charge pump to this terminal.
Connect second condenser of charge pump to this terminal.
Connect second condenser of charge pump to this terminal.
Connect last condenser of charge pump / VG external input
Ground of circuits except for output section
Start / Stop
Brake
Speed control
Reference voltage of speed control
FG pulse output
FG pulse output when pin15 FG signal goes half round
Correction of frequency characteristic of speed control loop
Setting of VCO oscillation frequency
Setting of VCO maximum oscillation frequency
Setting of VCO minimum oscillation frequency
Forms motor waveform
Forms motor waveform
Forms motor waveform
Forms motor waveform
VCO oscillation frequency control
Monitors CLOCK signal
Ground of circuits except for output section
Sample board for output current detection
Forms saw-tooth wave for PWM wave formation
Forms santooth waveform for soft switching wave formation
Clock input
Power supply except for output section
Non connection
Motor driven power supply
Detection of motor current
Non connection
Reset for operation check
Detection of counter electromotive voltage
Motor source output
Non connection
Detection of counter electromotive voltage
Motor source output
Non connection
Non connection
Detection of counter electromotive voltage
Motor source output
Detection of motor common voltage
Ground for output guard