EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450 Revision A
DISASSEMBLY/ASSEMBLY Printer Section 66
4.3.3  Document Cover/ASF Cover/Support Arm
 Part/Unit that should be removed before removing Document Cover /ASF 
Cover /Support Arm
 None
 Removal Procedure
1. Remove the Document Cover pulling out its left and right guide pins from the 
holes on the Scanner Unit.
Figure 4-5.  Removing Document Cover
2. Remove the ASF Cover pulling out its left and right holes from the guide pins on 
the Scanner Unit.
Figure 4-6.  Removing ASF Cover
3. Open the Scanner Unit.
4. Press the upper left and right sides of the Support Arm inward to release its upper 
left and right guide pins from the Scanner Unit.
5. Remove the Support Arm releasing its lower left and right guide pins from the 
guide rails on the Middle Case.
Figure 4-7.  Removing Support Arm
C A U T I O N
When disassembling/assembling the Scanner Unit after removing 
the Document Cover, make sure to protect the document glass 
from damage and dirt. Also, pay extra care to keep the Document 
Cover mat surface clean. 
Guide Pin
Document Cover
Mat
Document Glass
Guide Pin
ASF Cover
Install the Support Arm as shown. Be careful not to install it 
upside-down or back-to-front.
Figure 4-8.  Installing Support Arm
Guide Pin
Scanner Unit
Support Arm
Guide Rail
Scanner Unit