Epson B 1100 Service Manual

							Confidential
CHAPTER
4
DISASSEMBLY AND ASSEMBLY 
						

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4.1  Overview
This chapter describes procedures for disassembling and assembling this product. 
Unless otherwise specified, the disassembled units or main components can be 
reassembled by reversing the disassembling procedure.
WARNINGs must be followed to avoid personal injury or death.
CAUTIONs must be followed to avoid damaging the printer or test equipment.
ADJUSTMENT REQUIRED indicates that specific mandatory adjustments must 
be carried out to complete the repair.
CHECK POINTs emphasize a particularly important process or procedure.
REASSEMBLY notes provide helpful tips on reassembly procedures, especially 
when correct reassembly differs from simple reverse-assembly.
When you need to disassemble any units or parts that are not described in this chapter, 
refer to the exploded diagrams in the Appendix.
Before starting your work, always read the precautions described in the next section.
4.1.1  Precautions
Before starting the disassembling/reassembling work of this product, always read the 
following “WARNING” and “CAUTION” carefully.

Before starting the disassembling/reassembling work of this 
product, always disconnect the power cable. 
When the power supply cable must be connected for voltage 
measurement or like, be extremely careful not to get an electric 
shock and follow the procedures in this manual to do your 
work.
Wear protective goggles to protect your eyes from ink. If ink 
gets in your eyes, wash your eyes with clean water and see a 
doctor.
To prevent injury from sharp metal edges, always wear gloves 
for disassembly and reassembly.
If ink has adhered to your skin, wash it with soap and water. If 
it has caused skin irritation, see a doctor.
To protect the microprocessors and circuitry, use static 
discharge equipment, such as anti-static wrist straps when 
accessing the internal components.
Use only the recommended tools for disassembly, reassembly 
and adjustment.
Refer to Table 4-1 ? List of Tools ?.
Tighten screws to the specified torques.
Use the specified lubricants and adhesives.
Refer to Chapter 6 “Maintenance”.
Make the necessary adjustments under the instructions given 
for disassembling.
Refer to Chapter 5 “Adjustment”.
When using compressed air products; such as air duster, for 
cleaning during repair and maintenance, the use of such 
products containing flammable gas is prohibited. 
						

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4.1.2  Tools
The following table indicates the tools recommended for use for disassembly, 
reassembly and adjustment.
Note : All of the tools listed above are commercially available. EPSON provides the tools 
listed with EPSON tool code.
4.1.3  Screws
The following table lists the screws used in this product. When disassembling and 
reassembling the printer, refer to the following table and use the specified screws in the 
specified positions. 
Table 4-1. List of Tools
Tool NameCode
Phillips Screw Driver, No.11080530
Phillips Screw Driver, No.2 -
Flathead Screwdriver -
Tweezers -
Needle nose pliers -
Nipper -
Acetate tape -
PF Tension Measuring Tool 1294120
Penlight -Table 4-2. List of Screw Types
No. NameNo. Name
1) C.B.P. M3x10 11) C.C. M3x4
2) C.B.S. M3x6 12) C.P.B. (P1) M1.7x5
3) C.B.S. (P2) M3x10 13) C.B.P. M2.6x5
4) C.B.P. M3x8 14) C.P. M3x4 
5) C.B.S. M3x8 15) C.B.S. (P2) M3x8
6) C.B.S. (P4) M3x8 16) C.B.P. M2x8 
7) C.B.P. M2.6x8 17) C.B. M3x6
8) C.B.S. (P4) M3x6 18) C.B.P. 3x12
9) C.B.P. M3x6 19) C.B. M3x4
10) C.B.S. M3x4 
						

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4.1.4  Work Completion Checklist
Whenever the printer is serviced, use the checklist shown below to confirm all work is completed properly and the printer is ready to be returned to the user.
Table 4-3. Work Completion Check
ClassificationItemCheck PointCheck Field
Main Unit Self-test Is the operation normal?
Checked / Not necessary
On-line Test Is the printing attempt successful?
Checked / Not necessary
Printhead Is ink discharged normally from all the nozzles?
Checked / Not necessary
Carriage Mechanism Does it move smoothly?
Checked / Not necessary
Are there any abnormal noises during its operation?
Checked / Not necessary
Are there any dirt or foreign objects on the CR Shaft?
Checked / Not necessary
Is the CR Motor at the correct temperature? (Not too hot to touch?)
Checked / Not necessary
Paper Feeding 
MechanismIs paper advanced smoothly?
Checked / Not necessary
No paper jamming?
Checked / Not necessary
No paper skew?
Checked / Not necessary
No multiple-sheet feeding?
Checked / Not necessary
Is the PF Motor at correct temperature? (Not too hot to touch?)
Checked / Not necessary
No abnormal noises?
Checked / Not necessary
Is the paper path free of obstructions?
Checked / Not necessary
Adjustment Specified Adjustment Are all the adjustments correctly completed?
Checked / Not necessary
Lubrication Specified Lubrication Has lubrication been applied at the specified points?
Checked / Not necessary
Is the amount of lubrication correct?
Checked / Not necessary
Function ROM Version Version:                  
Checked / Not necessary
Packing Ink Cartridge Have the ink cartridges been installed correctly?
Checked / Not necessary
Protective Materials Have all relevant protective materials been attached to the printer?
Checked / Not necessary
Others Accessories Have all the accessories sent by the user been included in the 
package?
Checked / Not necessary 
						

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4.1.4.1  Protection for Transportation (Securing the Carriage) 
Before packing the printer to be returned to the user, attach a piece of strong tape 
(length: 250 mm, fold one end: 5 mm) to the carriage to prevent damage during 
transportation.
1. Attach the unfolded end of the strong tape on the bottom left of the carriage as 
shown in Figure 4-1.
2. Pull the tape and make it adhere to the left side of the carriage.
3. Move the carriage in the direction of the arrow (130 digit side) in Figure 4-1 until 
it touches the Carriage Lock.
4. Pull the tape toward the right side of the housing and attach it tightly along the 
shapes of the housing as shown in Figure 4-1 to secure the carriage.
Figure 4-1. Securing the Carriage
4.1.5  Locking/Releasing the Carriage
Locking and releasing the Carriage is shown below.
1. Remove the Decoration Plate Right. (Refer to 4.2.6 Decoration Plate Left/Right 
(p.71).)
2. Insert a phillips screwdriver into the hole on the right side of the frame, and rotate 
the white shaft of the Ink System Unit.
Figure 4-2. Release the Carriage Lock
15 mm
Step1-2
Folded end
Step4
Attach the tape on the 
housing to leave any gap.
Step3
Table 4-4. Carriage Lock/Release
Direction of RotationCarriage
Clockwise (CW) Locked
Counterclockwise (CCW) Released
White Shaft
CCW
CW 
						

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4.1.6  Disassembly
The flowchart below lists the step-by-step disassembly procedures. When disassembling each unit, refer to the page number shown in the figure.
Figure 4-3. Disassembly Flowchart
Rear Housing 
(p.68)
Start
Front Decoration 
Plate Left/Right 
(p.68)Panel Unit (p.69)Paper Support Assy 
(p.67)
Decoration Plate 
Left/Right (p.71)
Panel Unit (p.69) Front Decoration 
Plate Left/Right 
(p.68)Cover Open Sensor 
(p.127)
Upper Housing / 
Printer Cover 
(p.72)
Upper Housing 
Support Assy 
(p.74)
Lower Housing / 
Printer Mechanism 
(p.86)Board Assy (Main 
Board/Power Supply 
Board) (p.75)APG Assy (p.78)CR Scale (p.79)
CR Motor (p.120)Printhead / CSIC 
Assy (p.81)
Ink System Unit 
(p.107) Paper EJ Frame Assy 
(p.106) PF Encoder (p.124)
Upper Paper Guide 
Assys (p.118)
PF Roller Shaft 
(p.115)PW Sensor (p.125)CR Encoder (p.124) Carriage Shaft / 
Carriage Unit 
(p.88) APG Assy (p.78) CR Scale (p.79)
Upper Paper Guide 
Assys (p.118) PE Sensor Holder 
(p.126) Release Holder Assy 
(p.117) APG Assy (p.78) ASF Assy (p.96)
PE Sensor Holder 
(p.126)ASF Motor (p.123)
PF Motor (p.122)Waste Ink Pad / 
Waste Ink Tray Assy 
(p.104)
Front Paper Guide / Paper 
EJ Roller / Front Paper 
Guide Pad Tray 
(p.110)Foot (p.105)
	

The boxes shown in a dotted-line are not the shortest 
procedures, but are necessary to proceed to the next step.
Since a prototype was used to illustrate these disassembly 
and assembly procedures, the appearance of some parts 
may differ from those on an actual product.
Stacker Assy 
(p.67)
PF Encoder (p.124)ASF Assy (p.96)
ASF Motor (p.123)
LD Roller (p.99)Retard Roller Assy 
(p.101) Front Paper Guide 
Pad (p.103)
Paper EJ Frame Assy 
(p.106) 
						

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4.2  Removing the Housings
4.2.1  Paper Support Assy
1. While pulling out the left and right guide pins of the Paper Support Assy, remove 
the Paper Support Assy.
Figure 4-4. Removing the Paper Support Assy
4.2.2  Stacker Assy
1. To disengage the guide pin on the right of the Stacker Assy, push the Stopper in 
the direction of the arrow with a flathead screwdriver or similar tool.
2. Pull out the left guide pin of the Stacker Assy, and remove the Stacker Assy.
Figure 4-5. Removing Stacker Assy
Paper Support Assy
Guide pinGuide pin
Stopper
Guide pins
Stacker Assy
Hole
Guide pin 
						

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4.2.3  Front Decoration Plate Left/Right
1. Open the Stacker Assy.
2. While releasing the hook on the Front Decoration Plate Left, open the plate in the 
direction of the arrow, and remove it.
3. In the same way, remove the Front Decoration Plate Right.
Figure 4-6. Removing the Front Decoration Plate Left/Right
4.2.4  Rear Housing
1. Remove the two C.B.P. M3 x 8 screws and the C.B.S. M3 x 6 screw that secure the 
Rear Housing.
2. Disengage the two tabs from the Upper Housing and remove the Rear Housing.
Figure 4-8. Removing the Rear Housing
When installing the Front Decoration Plate L/R, insert the two 
hooks at the bottom of them into the holes of the Lower housing, 
then secure the Front Decoration Plate L/R with the other hooks.
Figure 4-7. Reinstalling the Front Decoration Plate Left/Right
Front Decoration Plate Left
Hook
Hook
Tighten the screws in the order shown in Figure 4-8.
Tab
4) C.B.P. M3x8
(6±1 kgf.cm)
Rear Housing
Tab
2) C.B.S. M3x6
(6±1 kgf.cm)
12 
						

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4.2.5  Panel Unit
1. Open the Printer Cover.
Figure 4-10. Removing the Panel Unit (1)
Align the positioning tabs (one each on the left/right) with the 
positioning holes (one each on the left/right) on the Upper 
Housing.
Align the positioning tabs (three each on the left/right) with the 
positioning holes (three each on the left/right) on the Decoration 
Plate Left/Right and the Lower Housing.
Figure 4-9. Reinstalling the Rear Housing
Positioning tab
Hook this to the 
Upper Housing
Positioning tab
Panel Unit
Printer Cover 
						

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2. Disengage the nine hooks on the bottom of the Panel Unit, and remove the Panel 
Unit while pulling out its tab.
3. Disconnect the Panel FFC from the Panel Board connector and remove the Panel 
Unit.
Figure 4-11. Removing the Panel Unit (2)
HookTabConnector
Panel FFC
Panel Unit
Be careful not to get the Panel FFC caught underneath the 
hooks on the Panel Unit.
Secure the Panel FFC to the Panel Unit with a piece of double-
sided tape.
Figure 4-12. Securing the Panel FFC
Panel Unit
Double-sided tape
Panel FFC