4-26
FS-1010
(3) Power supply board
The power supply board provides the AC power input and DC power and outputs. The high voltage
bias generator circuit is mounted on a separate board. A simplified schematic diagram is shown
below.
Figure 4-3-8 Power supply board circuit block diagram
FET
(Q1)
Switching/
Over
current
detection
circuit
Power
switch
Current
fuse
Noise
filter
circuit
Transformer
(T1)
24 V DC
rectifier/
smooth-
ing circuit
24 V DC
shutoff
circuit
Over voltage
detection
circuit
Photo-
coupler
(PC1)
Photo-
Triac
(PC2)
Triac
(TRC1)
Heater
lamp
AC
input
5 V DC
rectifier/
smooth-
ing circuit
Thermistor
Cooling fan
+24 V COM
+24 V COM
THERM
+24 V
HEAT
EXITN
PGND, SGND
+5 V
FAN
SLEEP
Thermal
cutout
Transistor
(Q8)
ZCROSS
Photo-
coupler
(PC3)
(SW1) (F1)
Exit
sensor
Zero cross signal
detection circuit
Power supply unit
Summary of Contents for Ecosys FS-1010
Page 1: ...SERVICE MANUAL Published in Dec 01 Laser printer...
Page 2: ...Version Replaced pages Remarks Date 1 0 Revision history 5 Dec 2001...
Page 9: ...Chapter 1 P r o d u c t I n f o r m a t i o n...
Page 24: ...Chapter 2 Installation Operation...
Page 40: ...Chapter 3 Maintenance Adjustments...
Page 52: ...Chapter 4 O p e r a t i o n O v e r v i e w...
Page 81: ...Chapter 5 D i s a s s e m b l y...
Page 111: ...FS 1010 5 31 8 Remove the eraser lamp 9 9 5 2 28 Removing the eraser lamp...
Page 113: ...Chapter 6 T r o u b l e s h o o t i n g...
Page 144: ...Appendix A D i a g r a m s...
Page 153: ...Appendix B S t a t u s P a g e...
Page 160: ...Appendix C I n t e r f a c e...