Epson B 1100 Service Manual

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 91
Confidential
11. Remove the CR Drive Belt from the CR Motor Pinion Gear.
Figure 4-65. Removing the CR Drive Belt
12. Remove the four C.B.S. (P4) M3 x 6 screws that secure the CR Guide Plate, and 
remove it from the Main Frame.
Figure 4-66. Removing the CR Guide Plate13. Loosen the C.B.S. (P4) M3 x 8 screw that secures the Left Parallelism Adjust 
Bushing, and rotate the Bushing toward the front of the Printer Mechanism to 
prevent interference between the Flag of the Parallelism Adjust Bushing and the 
Left PG Cam.
Figure 4-67. Rotating the Left Parallelism Adjust Bushing
14. Slide the Left CR Shaft Mounting Plate upwards, and release the tab on the Left 
CR Shaft Mounting Plate from the notch on the Main Frame to rotate the 
Mounting Plate toward you.
Figure 4-68. Rotating the Left CR Shaft Mounting Plate
Align the positioning holes on the CR Guide Plate with the 
seven tabs on the Main Frame. See Figure 4-66 (p.91)
Tighten the screws in the order shown in Figure 4-66.
CR Drive Belt
CR Motor Pinion Gear
4321
8) C.B.S. (P4) M3x6
(8±1 kgf.cm)8) C.B.S. (P4) M3x6
(8±1 kgf.cm)CR Guide Plate
Tabs
6) C.B.S. (P4) M3x8
(5±1 kgf.cm)
Left PG Cam
Flag of the Parallelism Adjust Bushing (Left)
Left CR Shaft 
Mounting Plate
Tab 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 92
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15. Lift the Carriage Shaft upwards, and remove the Carriage Shaft Spacer from the 
Carriage Shaft with tweezers.
Figure 4-69. Removing the Carriage Shaft Spacer
16. Rotate the Left CR Shaft Mounting Plate toward you to remove the Bushing on the 
Left CR Shaft Mounting Plate from the Carriage Shaft.
Figure 4-70. Removing the Left CR Shaft Mounting Plate17. Lift the Carriage Shaft within the hole on the Main Frame, and remove the Spacer 
and Left PG Cam from the Carriage Shaft.
Figure 4-71. Removing Left PG Cam
18. Remove the Spacer and Right PG Cam from the Carriage Shaft.
Figure 4-72. Removing Right PG Cam
Carriage 
Shaft
Carriage Shaft Spacer
Left CR Shaft 
Mounting Plate
Bushing
Spacer
PG Cam (Left)
Hole on Main 
Frame
Spacer
Right PG Cam 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 93
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19. Pull the Right CR Shaft Mounting Plate away from the tab on the Main Frame and 
rotate toward you.
Figure 4-74. Rotating the Right CR Shaft Mounting Plate20. Slide the Carriage Unit to the left side to prevent the CR Scale Cover from 
interfering with the rear of the Carriage Unit, slide the Carriage Shaft to the left 
side and pull out its right end from the Main Frame, and pull out the Carriage Shaft 
from the Main Frame and Carriage Unit.
Figure 4-75. Removing the Carriage Shaft
Install the Right PG Cam so that one of these positions marked “0”, 
“+” or “++” faces downward.
Figure 4-73. Right PG Cam Installation Direction
Right CR Shaft 
Mounting Plate
Tabs
When performing the following procedure, take care not to scratch 
the Carriage Shaft.
Carriage Unit
Carriage Shaft
Point of 
Interference
CR Scale Cover
12
3 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 94
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21. Insert the flathead screwdriver and such to the two holes of the Carriage Unit, and 
release the two tabs of the Ink Guide from the two hooks of the Carriage Unit, and 
then remove the Ink Guide upward.
Figure 4-77. Removing the Ink GuideSet the longer end of the Carriage Shaft to the left side.
When the Carriage Shaft is removed, the Plain spring and Leaf 
spring that are attached to the right end of the Carriage Shaft 
may drop off. In such case, be sure to attach them in the order 
as shown in the figure below.
Figure 4-76. Reinstalling the Carriage Shaft
Leaf spring
Plain springCarriage Shaft
Left Side Right 
Side
LongerShorter
HolesBottom Side
Ink Guide
Hook
Ink GuideCross-section
Tab 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 95
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22. Turn the Belt Holder Mounting Plate in the direction of the arrow, and remove it 
from the Carriage Unit.
Figure 4-78. Removing the Belt Holder Mounting Plate
23. Remove the Belt Holder from the Carriage unit.
Figure 4-79. Removing the Belt Holder24. Release the CR Encoder Board Holder from the three Tabs to remove it from the 
Carriage Unit.
Figure 4-80. Removing the Belt Holder
Belt Holder Mounting 
Plate
Belt Holder
Tabs
CR Encoder Board Holder 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 96
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25. Disconnect the Sensor FFC from the connector on the CR Encoder Board, pull out 
the Sensor FFC from the Carriage Unit, and remove the Carriage Unit.
Figure 4-81. Removing the Carriage Unit4.4.6  ASF Assy
1.Remove the Upper Housing Support Assy. (p.74)
2. Remove the C.B.S. M3 x 8 screw that secures the Earth cables on the right rear 
side of the printer, and remove the Earth cables.
3. Disconnect the ASF Motor connector from the Relay connector.
4. Disconnect the Relay connector cable from the ASF Assy.
Figure 4-82. Releasing the Cables (1)




After replacing or removing the Carriage Shaft and Carriage Unit, 
always make the required adjustments referring to the following.
“Chapter 5 Adjustment (p.128)”




After replacing or removing the Carriage Shaft and Carriage Unit, 
be sure to perform the required lubrication referring to below.
“Chapter 6 Maintenance (p.152)”
CR Encoder Board
Sensor FFC 
Secure the two Earth cables together with the screw. 
Referring to Figure 4-82, correctly route the Relay connector 
cable.
Relay 
connector
Relay 
connector 
cable
Earth cables5) C.B.S. M3x8
(8±1 kgf.cm)
ASF Motor
ASF Assy 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 97
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5. Disconnect all the cables and the FFCs from the connectors on the Relay Board.
CN1 : Relay FFC
CN2 : PE Sensor cable
CN6 : PF Encoder Sensor FFC
6. Peel off the acetate tape, and disconnect all the FFCs from the connectors on the 
Main Board, and release it from the groove on the ASF Assy.
7. Remove the APG Motor cable and PE Sensor cable from the ASF Assy.
8. Peel off the PF Encoder FFC secured by two pieces of double-sided adhesive tape 
from the ASF Assy.
Figure 4-83. Releasing the Cables (2)9. Remove the two C.B. M3 x 6 screws that secure the two Guide Roller LDs.
10. Gently pull the LD Roller Shaft to the rear of the printer, and remove the Guide 
Roller LDs.
Figure 4-85. Removing the Guide Roller LD
Referring to Figure 4-83, correctly route each of the cables and 
FFCs.
PF Encoder 
Sensor FFCPE Sensor cable
Groove
Relay Board
Main Board
Acetate tape
APG Motor cable
Double-
sided 
tapes
	

When only removing the ASF Assy, you do not need to perform 
5.3.5 ASF Guide Roller LDs Position Adjustment (p150). In that 
case, mark the installing positions of the Guide Roller LDs before 
removing them, and make sure to align the markings when 
installing the Guide Roller LDs.
Figure 4-84. Marking Position
Front 
Face17) C.B. M3x6
(8±1 kgf.cm)
Guide pinTab
LD Roller ShaftGuide Roller LD
Guide Roller LD 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 98
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11. Remove the three C.B.S. (P4) M3 x 8 screws that secure the ASF Assy, and 
remove the ASF Assy from the Printer Mechanism.
Figure 4-86. Removing the ASF Assy
Align the guide pins and tabs on the Guide Roller LDs with the 
positioning holes on the Main Frame. (Refer to Figure 4-85.)
2
1
6) C.B.S. (P4) M3x8
(6±1 kgf.cm)
ASF Assy
6) C.B.S. (P4) M3x8
(6±1 kgf.cm)
34
Align the guide pin and four Tabs on the ASF Assy with the 
positioning holes on the Main Frame so that there is no gap 
between the ASF Assy and the Main Frame.
Figure 4-87. Reinstalling the ASF Assy
Tighten the screws in the order shown in Figure 4-86.
Tab
Tab
Guide pins
Tab
Tab 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 99
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4.4.7  LD Roller
1.Remove the ASF Assy. (p.96)
2.Remove the ASF Motor. (p.123)
3. Remove the Combination Gear 29,11 from the ASF Assy.
4. Release the tab that secure the LD Spur Gear, and remove the LD Spur Gear from 
the LD Roller Shaft.
Figure 4-88. Removing the LD Roller (1)




After replacing or removing the ASF Assy, always make the required 
adjustments referring to the following.
“Chapter 5 Adjustment (p.128)”
	

When replacing the LD Roller, replace the Retard Roller Assy 
together with the LD Roller. (Refer to 4.4.8 Retard Roller Assy 
(p.101).)
Combination Gear 29.11
LD Spur Gear
Tab 
						

							WorkForce 1100/Epson Stylus Office T1110/B1100/T1100/Epson ME Office 1100 Revision C
Disassembly And Assembly Disassembling the Printer Mechanism 100
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5. Release the two tabs that secure the ASF Sensor Flag from the inside of the ASF 
Assy, and remove the ASF Sensor Flag from the LD Roller Shaft.
Figure 4-89. Removing the LD Roller (2)
6. Remove the C.B.P. M3 x 8 screw that secure the ASF Support Plate from the 
bottom side of the ASF Assy, and remove the ASF Support Plate from the ASF 
Assy.
Figure 4-90. Removing the LD Roller (3)7. While bending the LD Roller Shaft slightly, detach it from the shaft hole on the 
left side of the ASF Assy, and remove the LD Roller Shaft.
8. Remove the LD Roller from the LD Roller Shaft.
Figure 4-91. Removing the LD Roller (4)
Inside 
LD Roller Shaft
TabsASF Sensor Flag
ASF Support Plate
4) C.B.P. M3x8
(6±1 kgf.cm)
Bottom side
LD Roller 
LD Roller ShaftHole