Epson C117001-N - DFX 5000+ B/W Dot-matrix Printer Service Manual page 74

CHAPTER 3 Disassembly and Assembly
Table of Contents
3.1 BEFORE STARTING
3.1.1 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.2 Small Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.2 DISASSEMBLY AND ASSEMBLY
3.2.1 Replacing the Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.2.2 Replacing the ROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.2.3 Removing the Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.2.3.1 Removing theTopCover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.2.3.2 Removing the Left, Right, and Front Covers and
Replacing the Fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.2.3.3 Removing the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.2.3.4 Removing the Upper Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.2.3.5 Removing theCoverOpen Sensor . . . . . . . . . . . . . . . . . . . . . . 3-14
3.2.4 Removing theCircuitBoards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.2.4.1 Removing the Bottom Panel Assembly. . . . . . . . . . . . . . . . . . . 3-15
3.2.4.2 Removing the Cooling Fan and C117 Power Supply Board
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.2.4.3 Removing the Cl 17 MAIN Board Assembly. . . . . . . . . . . . . . . 3-18
3.2.4.4 Removing the AC Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.2.4.5 Removing the
3.2.5 Removing the Interlock Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . 3-21
3.2.6 Removing the Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
3.2.7 Printer Mechanism
Removing the Front/Rear Tractor Select Lever Assembly . . . . 3-24
3.2.7.1
Disassembling the Front/Rear Tractor Select Lever
3.2.7.2
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Removing the Connector Junction Board Assembly and
3.2.7.3
FPC Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Removing the PG Sensor and PG Motor . . . . . . . . . . . . . . . . . 3-28
3.2.7.4
Removing the Plunger and Paper Bail Assembly. . . . . . . . . . . 3-29
3.2.7.5
Removing the Upper Paper Guide and Top PE Sensor , . . . . . 3-31
3.2.7.6
Removing the Tension Roller Shaft. . . . . . . . . . . . . . . . . . . . . . 3-31
3.2.7.7
3.2.7.8 Removing the Platen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Removing the Paper Jam Sensor. . . . . . . . . . . . . . . . . . . . . . . 3-34
3.2.7.9
3.2.7.10 Removifig the Pull Tractor Sensor . . . . . . . . . . . . . . . . . . . . . 3-35
3.2.7.11 Removing the Paper Width (PW) Sensor . . . . . . . . . . . . . . . . 3-35
3.2.7.12 Removing the PG Home Sensor. . . . . . . . . . . . . . . . . . . . . . . 3-36
3.2.7.13 Removing the PF Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
3.2.7.14 Removing the Left Side Frame Gears. . . . . . . . . . . . . . . . . . . 3-38
,3.2.7.15 Removing the Front Tractor Assembly . . . . . . . . . . . . . . . . . . 3-39
3.2.7.16 Removing the Rear Tractor Assembly . . . . . . . . . . . . . . . . . . 3-40
3.2.7.17 Removing the CR Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41
3.2.7.18 Removing the CR (Carriage Encoder) Sensor . . . . . . . . . . . . 3-42
3.2.7.19 Disassembling the Carriage Mechanism . . . . . . . . . . . . . . . . 3-43
3.2.7.20 Removing the Paper Guide Suppoft Plate . . . . . . . . . . . . . . . 3-45
3.2.7.21 Removing the Platen Roller. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45
Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
3-1
3-7