Epson DFX-9000
Revision B
Operating Principles
Printer mechanism
75
2.2.6 Other mechanisms
2.2.6.1 Top cover open/close detection mechanism
When the top cover is opened, two switches open causing the SP motor
and printing to stop. The Cover Open Switch assembly (CO SW ASY)
and the Interlock Switch assembly (INLK SW ASY) are installed on the
right side frame. When the top cover is closed, the two switches are
closed and printing resumes.
Figure 2-18. Top Cover Open/Close Detection Mechanism
C H E C K
P O I N T
The Interlock and Cover Open switches can be bypassed as
explained in the table below if the unit is needs to be
operated with the top cover or upper housing removed.
W A R N I N G
Exercise extreme care when working on the unit with these
safety switches bypassed. The SP motor is enabled, and the
Carrier unit moves at very fast speed. If the Carrier unit
strikes you at high speed, it could result in injury.
Table 2-5. Bypassing the Cover Open and Interlock switches
Switch
Bypass procedure
Interlock (INLK)
Short pins 1 and 4 of connector CNINLK
on the ROM Board. See
Figure 4-20 on
page 146
.
Cover Open (CO)
Short pins 1 and 2 of connector CNCOS
on the Sensor Board. See
Figure 4-23 on
page 149
.
Left Side Frame
SP Motor
Top Cover
Actuators
INLK SW ASY
CO SW ASY
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 ...