Power Supply; Outline; Rated Output Of The Power Supply Pcb; Protection Function - Canon MF6500 Series Service Manual

Chapter 9

9.3 Power Supply

9.3.1 Power Supply

9.3.1.1 Outline

LaserBase MF6530 / / LaserBase MF6540PL / LaserBase MF6550 / KaserBase MF6560PL / / LaserBase MF6580PL
When the main power switch (SW1) is turned on, AC power is supplied to the low-voltage power supply circuit in the power supply PCB.
The low-voltage power supply circuit supplies +3.3 V, +5 V, and +24 V to operate the machine.
+24 V is supplied to the motors, fan, electromagnetic clutch, solenoid, etc. +5 V and +3.3 V are supplied to the DC controller PCB, image processor PCB, anlog
processor PCB.
There are two types of +24 V voltages: +24 V which is normaly supplied from the low voltage power supply and +24 VR which is cut off when the left door is
opened. The +24 VR also plays the role of a door open detection signal (DOPEN). This signal allows the CPU to detect that the left door has opened.
Part Name
Power supply PCB
Main power switch (SW1)
Interlock switch (SW2)
ADF solenoids
ADF sensors
Reader unit
CS hp sensor
Reader motor

9.3.1.2 Rated Output of the Power Supply PCB

LaserBase MF6530 / / LaserBase MF6540PL / LaserBase MF6550 / KaserBase MF6560PL / / LaserBase MF6580PL
Output
Rated output voltage
Output voltage tolerance +10%, -5%
Rated output current
Overcurrent protection
trigger current
Overvoltage protection
trigger voltage

9.3.2 Protection Function

9.3.2.1 Protective Functions

LaserBase MF6530 / / LaserBase MF6540PL / LaserBase MF6550 / KaserBase MF6560PL / / LaserBase MF6580PL
9-2
Download Free Service Manual And Resetter Printer at http://printer1.blogspot.com
P1
Power supply PCB
SW1
To NCU PCB
F1
NF
F2
Low-voltage power
supply circuit
+3.3Vcircuit
+5Vcircuit
+24Vcircuit
ADF
+24V
ADF motor
+24V
+5V
Analog
processor
PCB
+24V
CS unit
+5V
+3.3V
+24V
24V
24V
4.5A
7.0A
32.5V
T-9-1
Function
Generates DC power from AC power.
Supplies AC power to the power supply PCB.
Detects opening/closing of the left door and cuts off +24 VR.
+3.3VR
Relay PCB
+24VR
+5VR
+24VR
scanner unit
DC
controller
+24VR Interlock
PCB
switch (SW2)
+3.3VR
+24VU
Main motor
+5VR
+3.3VR
Sensors
+3.3VR
+24VR
Cassette
+24VR
+5V
+3.3V
Control panel
+5VS
+5V
+3.3V
Modem
Image
+5V
processor
PCB
+3.3VS
Network PCB*2
+5VS
*1 : Only if equipped with Fax functions.
*2 : Only if equipped with Network functions.
*3 : Option
F-9-3
T-9-2
5V 5VR 3.3V
5.1V 5.1V 3.4V
+3%, -4% +3%, -4% +3%, -3%
0.3A 0.7A 2.4A
4.0A 2.0A 3.7A
8.0V 8.0V 5.5V
+24VR
Clutches
+24VR
Fan
+24VR
Solenoids
+3.3VR
Sensors
Laser
Mojular
unit*3
jack PCB*1
+3.3V
+5V
NCU PCB*1
PCB*1
3.3VR
3.4V
+3%, -3%
0.8A
2.0A
5.5V
0011-5770
0011-5771
0011-5772