Panasonic UF-890 Service Manual page 243

6.2.11 Printer Motor Drive Circuit
Motor Drive Circuit
The Printer Motor is a Brushless DC Motor. When the nMMP2 signal level goes Low, the Printer Motor
starts rotating. When the Printer Motor reaches a constant speed, the monitor feed back signal, nMMP3
goes Low and is fed back to the CPU which controls the printing process.The Printer Motor is powered
by a +24 VDC supply. When the interlocks are open, the +24 VDC supply is cut off and the Printer Motor
stops rotating.
5
IC51
CPU
6
Q514
LPC PCB
+5V +24VM
CNP59
+24VM
3
R592
nMMP3
1
nMMP2
2
4
MGND
Laser Printer Motor Drive Circuit Block Diagram
CON1
3
1
2
MGND
4
DC Motor Control PCB
243
M
DC Brushless Motor