Kyocera FS-1900 User Manual

4-30
FS-1900
Heater lamp control circuit
The heater lamp control circuit turns the heater lamp on and off which is located coaxially inside
the heat roller. The surface of the roller maintains the constant temperature needed to permanently
fuse the toner on paper.
The heater lamp is directly fed with AC primary power (220 - 240 V or 120 V) which is supplied
from the power supply unit.
Figure 4-3-9 heater lamp control circuit
+
THERM
HEATON*
THERM
THDEAD
R219
R217
+5V1
+5V1
+5V1
+5V1
+5V1
+5V1
+5V1
8
7
4
5
6
HTEMP*
U205-2
U205-1
R233
1M
Q204
3
3
2
2
1
1
393
393
R228
4
5
3
6
1
2
HEATON
QA201B
QA201A
+
−
+
−
Engine
gate
array
(U204)
CPU
(U201)
TRC
PC
AC
Engine board
Heater lamp
Thermal cutout
Thermisor
Fuser board
Power supply unit
1.3k
54
3
63
4
P34/RT04
/HRQ
P43/PPG3
P50/AN0
HEATON

Kyocera FS-1900 Specifications

General

I/O ports	USB
Mac compatibility	Yes
Standard input trays	A4
Compatible operating systems	Windows 95/98/NT3.5x/4.x/2000, Netware 3.x/4.x/5.x/NDS, AppleTalk, UNIX
Maximum print size	210 x 297 mm
Color	No
Print speed (black, normal quality, A4/US Letter)	18 ppm
Processor model	PowerPC
Number of print cartridges	1
Maximum input capacity	600 sheets