Disassembly and Assembly

Chapter 4

Disassembly and Assembly

Precautions .............................................................................................

4-1

Tools ........................................................................................................

4-1

Service Checks After Repair ...................................................................

4-2

Screw Specifications ...............................................................................

4-3

Notes for Unit Removal and Installation ...............................................

4-4

Items to Remove Before Disassembling the Printer .............................

4-5

Removing the Panel Unit .......................................................................

4-6

Removing the Printhead ........................................................................

4-7

Removing the Upper Housing Assembly ...............................................

4-8

Removing the Printer Mechanism .........................................................

4-9

Removing the Platen Assembly ................................................

4-10

Removing the Rear Frame Assembly .......................................

4-11

Removing the CR Motor Assembly ...........................................

4-12

Removing the PF Motor Assembly ...........................................

4-13

Disassembling the PF Gear Train ............................................

4-14

Removing the Carriage Guide Assembly .................................

4-15

Removing the Ribbon Drive (RD) Assembly ............................

4-17

Removing the Home Position (HP) Sensor ...............................

4-18

Removing the Platen Gap (PG) Sensor ....................................

4-18

Removing the Front and Rear Paper End (PE) Sensors...... .......

.4-19

Removing the Release Sensor ...................................................

4-20

Arranging the Cables ................................................................

4-21

Disassembling the Tractor Unit ...............................................

4-22

Removing the C094 MAIN Board Assembly ............................

4-23

Removing the C076 PSB Board Assembly ...............................

4-24

List of Figures

Figure 4-1.

Flowchart for Disassembling the Printer .........................

4-4

Figure 4-2.

Removing the Paper Guide Assembly ..............................

4-5

Figure 4-3.

Removing the Panel Unit ..................................................

4-6

Figure 4-4.

Connecting the FFC Cable to the Panel Unit ..................

4-6

Figure 4-5.

Removing the Printhead ...................................................

4-7

Figure 4-6.

Removing the Upper Housing Assembly ..........................

4-8

Figure 4-7.

Removing the Printer Mechanism ....................................

4-9

Figure 4-8.

Removing the Platen Assembly ......................................

4-10

Figure 4-9.

Removing the Rear Frame Assembly .............................

4-11

Figure 4-10. Removing the CR Motor Assembly .................................

4-12

Figure 4-11.

Positioning the CR Motor Assembly ...............................

4-12

Epson FX-870/1170

4-i