Kyocera Mita Ecosys FS-1010 Service Manual page 75

Variation
No.1
(Duty 100 %)
Conductivity
staus of Triac
Variation
No.2
(Duty 80 %)
Variation
No.3
(Duty 60 %)
Variation
No.4
(Duty 40 %)
Variation
No.5
(Duty 0 %)
FS-1010
Heater lamp turn-on pattern in 1 cycle (10 half waves)
1 2
AC wave
+
0 V
Zero
−
cross
point
On On
(TRC1)
+
0 V
−
On On
+
0 V
−
On On
+
0 V
−
On Off
+
0 V
−
Off Off
Figure 4-3-6 heater lamp turn-on variations
3 4 5 6 7
On On On On On
On On On On On
Off On On Off On
Off On Off Off On
Off Off Off Off Off
4-24
8 9 10
On On On
On Off Off
On Off Off
On Off Off
Off Off Off