
Chapter 9
9-1
9.1 Control Panel
9.1.1 Outline
0020-2722
i-SENSYS MF4300dn / i-SENSYS MF4350d / i-SENSYS MF4380dn / i-SENSYS MF4310/4318 / i-SENSYS MF4320d / i-SENSYS MF4330d / i-SENSYS
MF4340d / i-SENSYS D450d / i-SENSYS MF4370dn
The machine's control panel consists of the following PCBs, and is controlled by the SCNT PCB.
F-9-1
9.2 Power Supply
9.2.1 Power Supply
9.2.1.1 Power Supply Route
0020-2897
i-SENSYS MF4300dn / i-SENSYS MF4350d / i-SENSYS MF4380dn / i-SENSYS MF4310/4318 / i-SENSYS MF4320d / i-SENSYS MF4330d / i-SENSYS
MF4340d / i-SENSYS D450d / i-SENSYS MF4370dn
F-9-2
9.2.2 Protection Function
9.2.2.1 Protecting Function
0020-2723
i-SENSYS MF4300dn / i-SENSYS MF4350d / i-SENSYS MF4380dn / i-SENSYS MF4310/4318 / i-SENSYS MF4320d / i-SENSYS MF4330d / i-SENSYS
MF4340d / i-SENSYS D450d / i-SENSYS MF4370dn
In the case of troubles with power supply PCB such as short circuit to loads, and resulted in occurring overcurrent or over overvoltage, there is a protecting function
for overcurrent/overvoltage to automatically shut the output voltage to avoid fault of power supply PCB.
In the case that the protecting function for overcurrent/overvoltage is activated, it recovers by turning off the main power switch to handle the load trouble, and
then, turning on the main switch again. Also, there are 2 pc of fuses in PCB. If there is overcurrent in AC line, fuse is blown out and power distribution is shutdown.
ASIC
LED
LCD
Key SW
SCNT PCB
Operation panel
Fixing Assenmbly
High Voltage
Circuit
Motor
Driver
Motor
Driver
NCU
Hook Detection
CI Detection
Speaker
Driver
DC/DCNT
AC Entry
Heater
Control
Heater
Cartridge
HVT
PSU
FET
LED
LDO
LAN
CPU
SDRAM
FLASH
MODEM
SCNT
LCD
Panel
DCNT
DC/DC
CIS
+24V
Main
Motor
Scanner
Motor
LASER
Solenoid
Speaker
BD
CPU
Read
Motor
+24V
+5V
+5V
+5V
+3.3V
+3.3V
+3.3V
+3.3V
+1.8V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+5V
+5V
+5V
+3.3V
+24V
+24V
+24V
+24V
+24V
+3.3V
+5V
+24V
+24V
+24V
Содержание i-SENSYS D450d
Страница 1: ...Aug 22 2008 Service Manual MF4300 Series ...
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Страница 12: ...Contents 15 1 1 Solvents Lubricants Table 15 1 ...
Страница 13: ...Chapter 1 Introduction ...
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Страница 33: ...Chapter 2 Basic Operation ...
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Страница 39: ...Chapter 3 Original Exposure System ...
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Страница 67: ...Chapter 5 Laser Exposure ...
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Страница 77: ...Chapter 6 Image Formation ...
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Страница 85: ...Chapter 7 Pickup and Feed System ...
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Страница 97: ...Chapter 8 Fixing System ...
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Страница 102: ...Chapter 8 8 2 F 8 2 1 Pressure roller 2 Fixing film H1 Fixing heater TH1 Thermistor TP1 Temperature fuse 1 TP1 TH1 H1 2 ...
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Страница 109: ...Chapter 9 External and Controls ...
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Страница 121: ...Chapter 10 Maintenance and Inspection ...
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Страница 144: ...Chapter 12 12 6 2 DCNT PCB 3 Power supply PCB 4 High voltage PCB SW301 Interlock switch ...
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Страница 153: ...Chapter 14 Service Mode ...
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Страница 156: ...Contents 14 3 2 3 Sensor test 14 16 14 3 2 4 Key test 14 16 ...
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Страница 175: ...Chapter 15 Service Tools ...
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Страница 181: ...Aug 22 2008 ...
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