Epson Aculaser M 2000 Service Manual

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating principle of Option mechanism 91
Confidential2.3.2.3  OperationSWITCHBACK MECHANISM†
Switchback operation
 
The Paper Exit Roller of the main body is used to subject the 1-sided print 
to a switchback sequence so that the 1-sided print is to be transported 
through the Duplex Unit.
Switchback operation
†
Paper Exit Roller drive coupling mechanism
 
When the Duplex Unit is mounted, the tip of the Duplex Unit Lever raises 
the Idle Lever...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating principle of Option mechanism 92
ConfidentialTRANSPORT CONTROLRotation speed of the Duplex Unit Transport Motor is controlled by the signals 
output from the Duplex Control Board.The following two types of printing methods are available.†
Operations in 2-sided printing with a single sheet of paper resident in the 
system
†
Operations in 2-sided printing with more than two papers
24066T2C501DA
1. The first sheet of paper is taken up and...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Operating principle of Option mechanism 93
Confidential6. The Main Body produces the print image of the first page 
of the original on the first 1-sided print that has been fed 
through the Duplex Unit.
7. At the same time, the second sheet of paper is subjected to 
a switchback sequence at the exit section and fed into the 
Duplex Unit.
8. At the same time, the third sheet of paper is taken up and 
fed into the main body.
1
2
6
4
4066T2C509DA
9....

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Other Control 94
Confidential2.4  Other Control2.4.1  Fan Control2.4.1.1  Construction
Figure 2-88.  Construction
2.4.1.2  Function
4039T2C131AA
Suction Fan Motor (M10)
Ozone Ventilation Fan Motor (M14)
Power Supply Cooling Fan Motor/1 
(M8) Cooling Fan Motor/1 (M12)Cooling Fan Motor/2 (M22)
Fusing Cooling Fan Motor (M13)
Fusing Cooling Fan Motor/2 (M11)
Table 2-13.  Function
Motor Name
Control Conditions
Power Supply 
Cooling Fan Motor/1 
(M8)
It...

EPSON AcuLaser C9200NRevision D
OPERATING PRINCIPLES      Other Control 95
Confidential2.4.2  Engine Section Parts Operated When the Main 
Power Switch is Turned ON†
When the Main Power Switch is turned ON, the Mechanical Control Board 
detects it and sends a control signal to the DC Power Supply. This turns 
ON the Sleep Relay and the DC Power Supply supplies engine section 
parts with 3.3 VDC, 5 VDC, and 24 VDC. The Heater Relay is also turned 
ON and the Fusing Heater Lamps are supplied with AC...

Confidential
CHAPTER
3
TROUBLESHOOTING 

EPSON AcuLaser C9200NRevision D
Troubleshooting      Overview 97
Confidential3.1  OverviewFor efficient troubleshooting, verify the condition of the trouble carefully, and refer to 
the troubleshooting procedures given in this chapter, the operating principles (chapter 
2) and the appendix (chapter 7).3.1.1  Procedure Outline for TroubleshootingPerform troubleshooting work according to the following flowchart.
.
3.1.2  Preliminary CheckBefore starting troubleshooting, make sure that the following...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Overview 98
Confidential3.1.3  Precautions in Performing Troubleshooting Work1. Be sure to unplug the POWER CORD before starting troubleshooting work unless 
instructed to plug it.2. In case of performing work with covers removed, the interlock and the safety 
switches turned ON, and the power turned ON, disconnect the connector on the 
PH Unit if not necessary.3. In case of performing work with covers removed, the interlock and the safety 
switches...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Jam Display 99
Confidential3.2  Jam Display3.2.1  Checking a paper jam type and jammed locationWHEN A PAPER JAM ERROR MESSAGE IS DISPLAYED ON THE CONTROL PANEL.Find out the jammed location according to the message on the Control Panel, and perform the related troubleshooting.
Message
Jammed Location
Jam processing location
Reference
Paper Jam
 A, B, H
• Fusing/exit section
• A cover• B cover• H cover (Fusing Unit)
p.102
A
• Transfer section
• A cover...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Jam Display 100
ConfidentialWHEN A PAPER JAM ERROR MESSAGE IS NOT DISPLAYED ON THE CONTROL PANEL.Print the Error Log Sheet and find out a jam type and the jammed location referring to jam code on the sheet. The jam code is expressed in 8-digit hexadecimal and LSB is added at 
the end of code.Note *1 : Values printed on the Error Log Sheet.
*2 : When no applicable code is found in the above table, the paper jam is occurring at multiple points. In such...