Epson EPL-5800, Service Manual

Page: 54 / 114

EPSON EPL-5800 Revision B
Operating Principles Operating Principles of Mechanism 56
AT 600DPI
When the power switch is turned ON, the printer performs initialization, warm-up starts,
and the heater lamp is turned on. Then, the following temperature controls are performed.
"
Temperature control mode 1
This mode controls temperature during printing as 195
°
C and temperature in
standby as 115
°
C.
After this mode continues for 90 seconds, it shifts to the mode 2.
"
Temperature control mode 2
After this mode continues for 208 seconds, it shifts to the mode 3.
Printing temperature of the fusing roller is gradually lowered from 195
°
C to
185
°
C.
"
Temperature control mode 3
Controls temperature during printing as 185
° C and temperature in standby as
115 ° C.
Unless any errors generated or open the upper cover, this mode is sustained.
AT 1200DPI
When the power switch is turned ON, the printer performs initialization, warm-up starts,
and the heater lamp is turned on. The heater lamp stays ON until the temperature of the hear
roller reaches about 155
° C. Then, the following temperature controls are performed.
"
Temperature control mode 1
Controls temperature during printing as 155
°
C and temperature in standby as
115
°
C.
After this mode continues for 45 seconds, it shifts to the mode 2.
"
Temperature control mode 2
After this mode continues for 208 seconds, it shifts to the mode 3.
Printing temperature of the fusing roller is gradually lowered from 155
°
C to
150
°
C.
"
Temperature control mode 3
Controls temperature during printing as 150
° C and in standby as 115 ° C.
Unless any errors generated or open the upper cover, this mode is sustained.
Figure 2-13. Heat Roller Temperature Control
Table 2-3. Heat Roller Temperature Control
Temperature just after temperature control started
Condition before
temperature control is
aborted
Less than 50°C
50°C or over
less than 115°C
115°C or over
Mode 1, during the warm-up Mode1
Mode 2, 3, or when the power
supply OFF
Mode 1 Mode 2 Mode 3
115
°
C
185
°
C
195
°
C
H
eat
R
o
lle
r T
em
p
er
a
tu
re
Warm-up
Mode 1: 90sec Mode 2: 208sec Mode 3
Standby
During Printing
(600dpi)
Temperature detected by
thermistor
150
°
C
155
°
C
During Printing
(1200dpi)