Zebra GK420d User's Guide download pdf (Page 67)

Maintenance

Cleaning

8/4/10 GK420d™ User Guide 980608-001 Rev. C

Make sure the bearings are on the shaft of the platen.

Align the platen with the gear to the left and lower it into the printer’s bottom frame.

Rotate the tabs back and snap them into place.

Allow the printer to dry for one minute before closing the dispenser door, media cover or

loading labels.

Other Printer Maintenance

There are no user level maintenance procedures beyond those detailed in this section. See the

Troubleshooting on page 59 for more information on diagnosing printer and print problems.

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User Guide 1
GK420d™ 1
FCC Compliance Statement 4
Environmental Management 4
About This Document 5
Who Should Use This Document 6
Contacts 7
Document Conventions 8
Contents 9
Introduction 13
GK Series Thermal Printers 14
What’s in the Box? 15
Your Printer 16
Opening the printer 16
Printer Features 17
Operator Controls 18
Power Switch 18
Feed Button 18
Status Light 19
Closing the printer 20
Getting Started 21
Attaching Power 22
Preparing Media 23
Loading Roll Media 24
Under Media 25
Pre-install Windows 27
Printer Drivers 27
Serial Port and Windows 28
operating systems 28
Ethernet 28
Interface Cable Requirements 29
USB Interface Requirements 30
Serial Communications 31
Serial Cable 32
Parallel Port 33
Print Operations 37
Thermal Printing 38
Modes of Printing 39
Print Media Types 39
Replacing Supplies 41
Adjusting the Print Width 41
Adjusting the Print Quality 42
Media Sensing 43
Printing on Fan-Fold Media 44
Fonts and Your Printer 47
Stand Alone Printing 49
Sending Files to the Printer 50
Print Meter 50
EPL Line Mode 50
Printer Options 51
Label Dispenser Option 52
ZebraNet 55
KDU — Printer Accessory 57
Max. Current 58
Maintenance 61
Cleaning 62
Cleaning the Printhead 63
Media Path Considerations 64
Sensor Cleaning 65
Other Printer Maintenance 67
Replacing the Printhead 68
Troubleshooting 71
Status Light Descriptions 72
6. The printer is paused 74
No print on the label 75
Print Quality Problems 76
Manual Calibration 78
Recalibration 79
Communications Diagnostics 80
Feed Button Modes 82
Appendix: Interface Wiring 85
Parallel Interface 87
Ethernet Interface 88
Serial Port Interface 89
Appendix: Dimensions 91
All dimensions are 92
Label Dispenser 93
Appendix: ZPL 95
Configuration 95
Command Name Description 101
Notes • 102

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Zebra GK420d User's Guide Page 67

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