Confidential
3 - 3 2
3.3.2 Control
System
[ 1 ] Control of the print process
A micro CPU mounted on the MCTL PCB controls the print processes.
<Print Sequence Diagram>
Host Computer
I/F
Control
Control
Panel
Cooling
Fan (EX) 2
Cooling
Fan OZ
Belt
Sensor
Drum
Sensor
DM
ATC (4 pcs.)
Y
M
C
K
Scanner
Motor
LDU
PDU
Laser Control
CPU
Sequence Control
Temperature Control
Toner Empty Sensing Control
Control Panel Control
Error Processing Program
Oil Sensor (OIL)
Fusing Unit
DC Power
Supply Unit
High Voltage Unit
Interlock Switches
Paper Sensor (P.EN)
Main
Motor 2
Paper Sensor (F.CL)
Paper Sensor (PT1)
Paper Size Sensor (PSU)
Paper Sensor (EXF)
OHP Sensor 3 (OHP)
Belt Sensor (DPJ)
Paper Sensor (F.CL)
Toner Key Sensor 2 (TNK)
Paper Sensor (D.EN)
Belt Sensor (PBS)
Oil Sensor (OIL)
Paper Sensor (PT2)
Waste Toner Sensor (WTS)
Toner Sensor ASSY
Developer Position Sensor
Paper Full Sensor
Temperature Sensor for Fusing Unit
Video
Controller
MCTL (Engine Controller)
Fig. 3-33
(1) Control Block Diagram (Refer to Fig.3-33.)
No. Name
Function
1
Sequence Control
To control the print sequence of machine.
2
Temperature Control
To control the temperature of fusing unit.
3 Consumables' Life Control
To control the toner empty status and the life of
periodic replacement parts.
4 Operator Panel Control
To control the operator panel indication and the
operation signals.
5
Error Processing Control
To sense the errors occurring in the machine and the
stop procedures.
6 Interface Control
To control the receipt and transmission of the
interface signals from the external controller.
7
Laser Control
To control the laser scanning and laser power.
Summary of Contents for MFC-9420CN
Page 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS MFC 9420CN ...
Page 16: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 22: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 33: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 48: ...Confidential 3 1 4 CBV DBV Fig 3 16 Y M C K Fig 3 17 ...
Page 69: ...Confidential 3 3 5 Fig 3 35 ...
Page 73: ...Confidential 3 3 9 3 Interface Circuit Printer side Fig 3 38 ...
Page 82: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 85: ...Confidential 4 2 Cover page sample End page sample Fig 4 1 ...
Page 86: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 94: ...Confidential 5 5 5 1 1 AC Cord 1 Disconnect AC cord from the machine Fig 5 1 AC cord Machine ...
Page 175: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 203: ...Confidential CHAPTER 7 CLEANING ...
Page 205: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Page 213: ...8 6 Confidential Fig 8 2 Scanning Compensation Data List a b c d e f g h i j k l m n q ...
Page 224: ...8 17 Confidential Cover page sample End page sample Fig 8 8 ...
Page 255: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Page 279: ...Confidential 9 23 2 Image failure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
Page 280: ...Confidential 9 24 15 a 15 b 16 17 18 19 20 21 22 23 24 25 Fig 9 1 ...
Page 325: ...App 1 5 Confidential 6 Transfer Unit X X X X X X 7 1 2 3 Location SERIAL NO YEAR MONTH DATE ...
Page 398: ...B Power Supply PCB 100V 127V Confidential ...