Epson DFX-8500 - Impact Printer, Service Manual

Page: 88 / 245

DFX-8500
Rev. B
2-34
‰
Printhead high temperature feedback operation :
The printer supports the printhead temperature detection sequence, which consists of the following steps:
1. When the printhead temperature is less than 110
o
C, the printer performs normal printing.
2. When the printhead temperature exceeds equal or more than 110
o
C, the printer performs interval printing
(Carriage rest time at the sides is little bit longer than the normal.)
3. When the printhead temperature exceeds equal or more than 120
o
C, the printer stops printing until the
temperature goes down to 100
o
C or less.
4. When the printhead temperature returns less than 100
o
C, the printer performs normal printing again.
‰
HF temperature feedback operation :
The printer supports the printhead fan (HF) temperature detection sequence, which consists of the following
steps:
1. When the printhead fan temperature is less than 65
o
C, the HF fan stops.
2. When the printhead fan temperature exceeds equal or more than 65
o
C, the HF rotates.
3. When the printhead temperature goes down to 50
o
C or less, the HF stops again.