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Epson DFX 9000
Revision B
Disassembly and Assembly
POWER UNIT
136
4.2.3 Electrical circuit board removal
4.2.3.1 POWER UNIT
1. Remove the
PR MECHA ASY (p. 149)
2. Remove the two C.B.P. 4 × 16 screws that secure the left side
bracket used to attach the REAR UNIT, and remove the bracket
upward.
3. Disconnect the ACIN and CNPW cables (see the arrows in
Figure
4-9
) from the POWER UNIT.
4. Remove the six C.B.P. 3 × 10 screws that secure the POWER UNIT
to the LOWER UNIT.
5. Lift the rear of the POWER UNIT slightly, and slide it rearward in
the direction of the arrow. Release the two tabs that secure the front
of the POWER UNIT as you lift it by the rear and remove it.
Figure 4-9. POWER UNIT Removal
W A R N I N G
Disconnect the power cable and wait at least 5 minutes
to allow capacitors to drain before disassembling the
POWER UNIT. If you touch the POWER UNIT with
the power supplied, you may receive an electric shock.
Be careful with the edges of the shield plate, as they are
very sharp.
No.
Pins
Color
Connects to
ACIN
3
White
AC SW / INLET SW
CNPW
12
White
ROM BOARD
Bracket
2)-1
2)-2
5)-1
5)-3
4)
4)
4)
4)
4)
4)
CNPW
ACIN
POWER UNIT
LOWER UNIT
5)-2
tabs
5)-2
Summary of Contents for DFX-9000
Page 1: ...EPSONDFX 9000 Serial Impact Dot Matrix Printer SEDM04003 SERVICE MANUAL ...
Page 8: ...C H A P T E R 1 PRODUCT DESCRIPTION ...
Page 61: ...Epson DFX 9000 Revision B Product Description Dimensions and weight 54 ...
Page 62: ...C H A P T E R 2 OPERATING PRINCIPLES ...
Page 99: ...Epson DFX 9000 Revision B Operating Principles Circuit operation 92 ...
Page 100: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 104: ...Epson DFX 9000 Revision B Troubleshooting Overview 97 Mechanism initialization e e e e e ...
Page 107: ...Epson DFX 9000 Revision B Troubleshooting Overview 100 PAPER FEEDING FF APG APPROACH ...
Page 130: ...C H A P T E R 4 DISASSEMBLY AND ASSEMBLY ...
Page 218: ...C H A P T E R 5 ADJUSTMENT ...
Page 263: ...Epson DFX 9000 Revision B Adjustment Additional functions 256 ...
Page 264: ...C H A P T E R 6 MAINTENANCE ...
Page 286: ...C H A P T E R 7 APPENDIX ...
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Page 324: ...EPSON DFX 9000 Revision B Appendix Component Layout 317 7 4 Component Layout ...
Page 333: ...EPSON DFX 9000 Revision B Appendix Parts list 326 ...