ADJUSTMENT
Rev. B
4-1
4.1 PRINTER MECHANISM ADJUSTMENTS
This section describes the printer mechanism adjustments for the DFX-8500. Whenever the printer is
disassembled and the printer parts mentioned in this section are replaced or repaired, perform the
appropriate adjustments to ensure proper printer operation. Perform adjustments before assembling the
printer.
4.1.1 PG Motor Backlash Adjustment
In the PG motor backlash adjustment, the PG motor pinion gear must mesh smoothly with the PG
transmission gear cog. If the pinion gear is poorly aligned or the pinion gear and cog are too tight, printer
operation is noisy or the character density is incorrect.
;
If the PG motor backlash is too tight, PG motor doesn’t rotate smoothly and the panel indicates “E3.”
Step 1: Loosen the two screws securing the PG motor to the left side frame. (Refer to Section 3.2.6.4)
Step 2: Make sure the PG motor pinion gear is properly aligned with the PG transmission gear cog. Move
the PG motor until there is 0.05 to 0.15 mm (0.002 to 0.01 inches) between the PG motor pinion gear
and PG transmission gear cog. Then tighten the two screws.
CAUTION
P G T r a n s m i s s i o n G e a r
0 . 0 5 - 0 . 1 5 m m
P G M o t o r
P i n i o n G e a r
S c r e w s
P G M o t o r
Figure 4-1. PG Motor Mounting Position Adjustment
Summary of Contents for DFX-8500 - Impact Printer
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Page 205: ...MAINTENANCE Rev B 6 3 Figure 6 2 Lubrication and Adhesive Diagram 1 ...
Page 206: ...DFX 8500 Rev B 6 4 Figure 6 3 Lubrication and Adhesive Diagram 2 ...
Page 207: ...MAINTENANCE Rev B 6 5 Figure 6 4 Lubrication and Adhesive Diagram 3 ...
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Page 225: ...APPENDIX Rev B A 21 A 3 Component Layout Figure A 7 C204 MAIN Board Component Layout 1 ...
Page 226: ...DFX 8500 Rev B A 22 Figure A 8 C204 MAIN Board Component Layout 2 ...
Page 229: ...APPENDIX Rev B A 25 Figure A 13 C204 PSB Board Component Layout ...
Page 230: ...DFX 8500 Rev B A 26 Figure A 14 C204 PSE Board Component Layout ...
Page 236: ...DFX 8500 Rev B A 32 Figure A 16 Exploded Diagrams 1 ...
Page 237: ...APPENDIX Rev B A 33 Figure A 17 Exploded Diagrams 2 ...
Page 238: ...DFX 8500 Rev B A 34 Figure A 18 Exploded Diagrams 3 ...
Page 239: ...APPENDIX Rev B A 35 Figure A 19 Exploded Diagrams 4 ...
Page 240: ...DFX 8500 Rev B A 36 Figure A 20 Exploded Diagrams 5 ...
Page 241: ...APPENDIX Rev B A 37 Figure A 21 Exploded Diagrams 6 ...
Page 242: ...DFX 8500 Rev B A 38 Figure A 22 Exploded Diagrams 7 ...
Page 243: ...APPENDIX Rev B A 39 Figure A 23 Packing Material ...
Page 245: ...EPSON SEIKO EPSON CORPORATION ...