Epson DFX 9000
Revision B
Adjustment
Hardware adjustment
222
5.2.2 LF drive belt tension adjustment
Summary
This adjustment is required after you remove or replace these parts:
LF BELT
DV ROLLER R UNIT
DV ROLLER F ASSY
PJS ROLLER ASSY
PJS HOLDER ASSY
Tools / materials: Tension Gauge
Objective:
400 ± 20 gf measured tension on the LF BELT.
Adjustment Procedure
1. Loosen the screw that secures the TENSION PULLEY UNIT, and
then lightly tighten the screw to secure the unit temporarily.
2. Push the belt with the Tension Gauge at the location and direction
shown in
Figure 5-2
, and verify that the tension level is 400 ± 20 gf
when the belt is just touching the tension pulley as shown. If the belt
tension is not correct, adjust the tension following the steps below.
Figure 5-2. LF Drive Belt Tension Adjustment
C H E C K
P O I N T
Before performing this adjustment, remove these parts:
FRONT COVER ASSY
REAR UNIT
OP UNIT
UPPER UNIT
W A R N I N G
Turn the printer off and disconnect the AC cable before
you perform the following work.
LF Drive Belt
Screw
Adjust direction:
Up to tighten
Down to loosen
TENSION PULLEY UNIT
Point of maximum
belt deflection for
tension
measurement
Tension Gauge
contact point
Tension
pulley
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 ...