Brother HL-4000CN - page 151

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8. .2 2 R Re ep pl la ac ci in ng g t th he e P Pr ri in nt t H He ea ad d
C
Ca ar rt tr ri id dg ge e
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.
 See
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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8. .2 2. .1 1 P Pr ri in nt t H He ea ad d C Ca ar rt tr ri id dg ge e H Ha an nd dl li in ng g
P
Pr re ec ca au ut ti io on ns s
Never throw a print head cartridge into an flame. It can explode, causing injuries.
 Handling Precautions
• 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.
• 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.