Read Sharp MX-FN27 Service Manual online
MX-FN27 N, MX-PN14 OPERATIONAL DESCRIPTION 6 – 18
7. Power supply
A. Outline
When the host machine is turned on, it supplies the finisher controller PWB with 24 VDC and 5 VDC. The 24 VDC power is used to drive the motors
and the switches, while the 5 VDC power is for the sensors and the like.
and the switches, while the 5 VDC power is for the sensors and the like.
B. Protective Functions
The finisher controller PWB is provided with fuses (FU1 through 4) which blow in response to overcurrent.
FNM
Stapler motor
Stack Tray
Paper Height Sensor
Sensors
FNPS1 to FNPS8,
FNPS10 to FNPS16
Finisher controller PWB (PWB1)
CPU(IC1)
Host
machine
Front Cover Switch
F1
5VDC
+3.3VDC
24VDC
+3.3V
generation
circuit
Motors
FNM1 to FNM7,
FNM9 to FNM10
F3
F2
SW1
FNSTPLIF
FNPS9
FU4
Rear paper
flap solenoid
FNSL
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