Zebra 2746e Manuel de service télécharger pdf (Page 12)

Identifying printhead Problems

The printhead wears with printer use. If the print quality does not improve after cleaning, the

printhead may require replacement. Printing with worn damaged print elements may create

unreadable bar codes. printhead damage can be caused by improper cleaning (unapproved fluids or

implements), electro static discharge (ESD), and touching the printhead (contaminates, ESD and

body oil acids). The following are examples of printhead wear or damage.

8 980428-001 Rev. A

Weak or Damaged Print Elements

(Full-On Print Pattern)

Weak or Damaged Print Elements or Print Logic

(Rotating Print Element Pattern)

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 85 86

Commercial 1
Thermal Printers 1
Service Manual 1
FOREWORD 2
TECHNICAL SUPPORT 2
COPYRIGHT NOTICE 2
TRADEMARKS 2
INTRODUCTION 5
Conventions 7
4 980428-001 Rev. A 8
TROUBLESHOOTING GUIDE 9
(Full-On Print Pattern) 12
REQUIRED TOOLS 13
10 980428-001 Rev. A 14
REPLACING PARTS 15
Installation 16
Exterior Cover 16
Preparations 16
Disconnect Sensor 17
Cable at JP26 17
Printhead 20
Cut Cable Ties 21
Set AC Voltage 23
Set Voltage 23
Re-assemble Printer 23
DC Voltage Verification 24
DC Voltage adjustment 24
Switch and AC 25
Power Inlet Module 25
Retaining Tabs 25
DC Power Cable 26
AC Power Cable 27
Removal & Replacement 27
Securing the Wire Harness 28
Control Panel Tie Point 29
Anchor Tie 30
Final Check 31
Main PCBA 32
RTC Installation 34
Re-assembling the Printer 34
Motor Cable 35
Printhead Cable 37
Pin 1 of JP21 38
Connector 38
Label Guide & Sensor 39
Release Latch 40
Label Sensor PCBAs 42
Control Panel 45
Head-up Sensor 47
Label Taken Sensor 49
Peel Mechanism 51
Label Guide Tab 52
Ribbon Pulley (60 tooth) 54
Ribbon Drive Belt 55
Platen Belt (120 tooth) 56
Ribbon Collar & Spring 57
Lower Print Mechanism 64
Printhead Carriage 66
Cutter Cable 68
Instructions 70
Printer Configuration Check 71
Checking the Installation 71
Max. Allowable 72
Deflection = .125" 72
Measuring Tension 73
Verify Tension 73
Tension Adjustment 74
Ribbon Path Adjustment 75
Presetting 75
Adjusting the Ribbon Path 75
Vertical Slot Ad 76
Resetting the printhead 78
Packaging for Shipment 79
Printer Preparation 79
Packaging the Printer 79
Unpacking Instructions 80
CLEANING AND MAINTENANCE 81
Preventive Maintenance 82
Basic Cleaning 82
Cleaning the Media Path 83
Cleaning the printhead 83
Cleaning Film Usage Issues 84
RECOMMENDED SERVICE 85
82 980428-001 Rev. A 86

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Zebra 2746e Manuel de service Page 12

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