Epson Aculaser M 2000 Service Manual

Confidential
CHAPTER
2
OPERATING PRINCIPLES 

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Print Process 32
Confidential2.1  Print ProcessThis printer is a Full color page printer that uses the principle of 
electrophotographic recording. Each YMCK color (yellow, magenta, cyan, 
black) has its own special drum (Photoconductor (PC) drum) and developer 
that are used in tandem. Since each color is developed simultaneously, the 
color image can be printed at high speed comparing to the four cycles engine 
printer. The transfer intermediate...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 33
Confidential2.2  Operating Principle of Main Unit Mechanism2.2.1  Center cross section
Figure 2-2.  Center cross section
[1]
[3]
[4]
[5]
[6][2]
[7] [8] [9] [10] [11] [12] [13] [14] [15]
[17]
[16][18][19]
4039T1C102AA
1. Fusing Unit
2. Transfer Belt Unit
3. 2nd Transfer Roller
4. MP tray
5. Standard Cassette
6. Optional Cassette
7. Print Head Unit (PH Unit) /K
8. Print Head Unit (PH Unit) /C
9. Print...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 34
ConfidentialPAPER PATHNormally, papers are supplied from 2 bins. MP tray (100 papers) and Standard 
cassette (250 papers). 
 
5 bins of paper supply can be available by setting maximum three optional 
cassette (500 papers).†
A Paper supplied from each Tray is transported to the Vertical Transport 
then an image is transferred in the 2nd Transfer Roller and fused in the 
Fusing Unit. Finally, the paper...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 35
Confidential2.2.2  Parts layout drawingENGINE SECTION[1]
IDC/Registration Sensor/2 (SE2)
[6]
Controller Board (PWB-P)
[2]
IDC/Registration Sensor/1 (SE1)
[7]
Program ROM DIMM (WORK0)
[3]
Control Panel (PWB-OP)
[8]
RTC Board (PWB-RTC)
[4]
PH Interface Board (PWB-D)
[9]
Mechanical Control Board (PWB-M)
[5]
DC Power Supply (PU1)
[10]
High Voltage Unit (HV1)
4039F5C501DA
[1]
[10]
[9]
[8]
[7][2]
[3]
[4]
[5]...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 36
Confidential[1]
Right Door Switch (S5)
[6]
Front Door Switch/2 (S4)
[2]
Primary Interlock Switch (S2)
[7]
Main Erase Lamp/Y (LA4)
[3]
PH Unit
[8]
Main Erase Lamp/M (LA3)
[4]
Main Power Switch (S1)
[9]
Main Erase Lamp/C (LA2)
[5]
Front Door Switch/1 (S3)
[10]
Main Erase Lamp/K (LA1)
4039F5C503DA
[3]
[1]
[2]
[4] [5] [6][10]
[9]
[8]
[7]
[1]
Developing Clutch/K (CL4)
[8]
Waste Toner Full Sensor (PC8)
[2]...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 37
ConfidentialSTANDARD CASSETTE
4038T2C111A
A
4038T2C171AA
[1]
[3] [2]
4039T2C113AA
[1]
Registration Roller Sensor (PC1)
[7]
Standard Cassette CD Paper Size Sensor 
(PC9)
[2]
Standard Cassette Feed Roller
[8]
Standard Cassette Separation Roller
[3]
Standard Cassette Separation Roller
[9]
Standard Cassette Feed Roller (Bypass)
[4]
Standard Cassette Device Detection 
Sensor (PC12)
[10]
Standard Cassette...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 38
Confidential2.2.3  PH Unit2.2.3.1  Composition
Figure 2-4.  Composition
2.2.3.2  OperationOUTLINE†
4 types of the PH Unit are used for exposure process.
†
The surface of the Photo Conductor is irradiated with a laser light and an 
electrostatic latent image is thereby formed.
†
2 Beam Array LD is used to prevent the rotation speed from increasing 
caused by decreasing the number of the sides comparing...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 39
ConfidentialLASER SHUTTER MECHANISMThere is a shutter mechanism provided to prevent the PH from being 
contaminated with foreign matter such as dust when the front cover is opened, 
or prevent the emission laser from leaking outside for any reason.The Shutter operates relative to the removing and inserting Photoconductor 
Unit because PH Unit is not exposed concerning the layout of the unit when...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating Principle of Main Unit Mechanism 40
ConfidentialREGISTRATION CONTROL (COLOR SHIFT CORRECTION) SYSTEM†
In a tandem engine, in which an independent image reproduction process is 
provided for each of the four different colors of toner. Incorrect color 
registration, or color shift, is therefore more likely to occur due to each of 
the PH Units being out of correct position. The color shift correction 
system automatically detects any...