Fixing Temperature System; Fixing Temperature Control Based On Ambient Temperature - Kyocera KM-1650 Service Manual

2DA/2DB-1

(1) Fixing temperature system

Temperature
( C)
Warm-up
control
500 ms
HEAT signal
HEAT signal
Warm-up control
1. 500 ms after the fixing heater S (FH-S) turns on, the fixing heater M (FH-M) turns on.
2. When the fixing temperature reaches preset temperature, both fixing heater S (FH-S) and fixing heater M (FH-
M) turn off simultaneously.
Ready state control
1. When the fixing temperature drops to the preset temperature, fixing heater S (FH-S) turns on, and after speci-
fied time, the heater turns off.
2. When fixing heater S (FH-S) turns off, fixing heater M (FH-M) turns on at the same time, and after specified
time, the heater turns off.
3. The operation above is repeated to keep the fixing temperature to the preset temperature.
If a temperature more than or equal to the preset temperature + 20
(FH-S) and fixing heater M (FH-M) are turned off forcibly.

(2) Fixing temperature control based on ambient temperature

This machine performs fixing temperature control based on the ambient temperature.
Ambient temperature
°
Lower than 13 C/55.4
Higher than or equal to 13
°
lower than 18 C/64.4
Higher than or equal to 18
°
lower than 31 C/87.8
°
Higher than 31 C/87.8
2-1-16
Ready state
control
Off
On
Off
On
Figure 2-1-19 Fixing temperature system
Fixing temperature (
°
Reference value +10
F
° °
Reference value +5
C/55.4 F,
°
F
° °
Reference value
C/64.4 F,
°
F
°
Reference value -5
F
Off
On
Off
On
°
C/68
°
C)
Preset temperature ( C)
(secondary stabilization)
Time
Fixing heater S (FH-S)
On
Fixing heater M (FH-M)
On
°
F is detected, both fixing heater S