Muratec MFX-2550 Field Engineering Manual page 48

LPH (LED Printer Head) board / LPH connection board
It detects the printer sensor signal.
It controls the clutches.
It converts the print serial data received from main control board to a data format for the LED head,
then transmits it to the LED.
It reads the LED individual difference correction data, and adjust the print density.
Panel board
This is a key input board that equips 5.7 inch monochrome LCD.
It controls the panel key and LCD touch key.
Network board
This controls the network interface.
It has the OfficeBridge function.
Printer Description Language (PDL) board
This rasterizes print data transmitted from the computer, as the main control board cannot do it.
Low-voltage power board
It consists of four blocks: primary control, secondary control, heater control, and flicker control.
The secondary output voltages are +24.0 VDC, +12.0 VDC, +5.0 VDC, and +3.3 VDC. The +24.0
VDC is for transformer control, +12.0 VDC, +5.0 VDC, and +3.3 VDC are for DC/DC control.
AC inputs is turned off and on by an AC switch at an inlet.
It equips an overvoltage and overcurrent protection circuit.
It equips a heater driving circuit for the fuser.
Output is 750 W / 100VAC.
INLET
SW
FUSE F1
L
N
FUSE F101
OUTPUT HEATER CN101
RECTIFIVATION /
LINE FILTER
LEVEL
HEATER
CONTOL 1
HEATER
CONTOL 2
CN 101
DC/DC
RECTIFIVATION /
LEVEL
CONTOL IC
PC 1A
PC 2A
PT102
PT101
2-19
OUTPUT CN201
CONTOL
P-CON
+12V
HC1
HC2
+24. 0V
FUSE F201
FUSE F202
CONTOL
+24V
P- C O N
OUTPUT CN202
CONTOL
+12. 0V
FUSE F203
DC/DC +12V
CONTOL
+5. 0V
DC/DC +5V
CONTOL
+3. 3V
DC/DC +3V
HC1
HC2
1
2
3
4
5
6
7
8
9
1
2
3
7
8
11
12
4
5
6
9
10
13
14
15