8.2 Replacing the Print Head Cartridge; 8.2.1 Print Head Cartridge Handling Precautions; Handling Precautions- Page 151

Brother HL-4000CN User's Guide

Table of Contents

CHAPTER 3 BASIC PRINTER OPERATION
CHAPTER 8 ROUTINE MAINTENANCE AND CONSUMABLE REPLACEMENT
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This print head cartridge consists of the light-sensitive print head, the developer and 
the transfer roll.  
When the print head deteriorates, ‘Replace Print Head Cartridge’ message appears 
on the operation panel. 
Replace the print head cartridge as soon as the message prompting you to do so 
appears.  

 

 

 

 

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The print head cartridge is a consumable. For more information about consumables, 
refer to A.1 “Introduction to Options and Consumables”. 
For details about when to change consumables, refer to A.4 “Life Span of 
Consumables”. 

 
 

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Never throw a print head cartridge into an flame. It can explode, causing injuries. 

 
 

 

Handling Precautions 

 

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Make sure that nothing touches or scratches the light-sensitive print head 
surface (blue colored part) or transfer roll (black colored part). Scratches, dirt, or 
oil from your hands onto the print head or transfer roll will deteriorate print 
quality. 

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Do not expose the print head cartridge to direct sunlight and avoid exposing the 
print head cartridge to fluorescent indoor light, as this may result in dropouts or 
dirty printing. 

Detailed Information for Brother HL-4000CN User's Guide

Lists of information found in Brother HL-4000CN User's Guide - Page 151

  • Make sure that nothing touches or scratches the light-sensitive print head surface (blue colored part) or transfer roll (black colored part).
  • Do not expose the print head cartridge to direct sunlight and avoid exposing the print head cartridge to fluorescent indoor light, as this may result in dropouts or dirty printing.

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