Kyocera Mita DC-1560, Service Manual

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1AF
1-3-16
This copier employs a slit exposure system with a fixed original table, and a halogen lamp
(HL) as the light source.
The optical section consists of light source units 1 and 2. Light source unit 1 carries the
halogen lamp and the main and auxiliary reflectors. Each unit travels from one side of the
machine to the other along scanner rails at machine front and rear. When an enlargement
or a reduction ratio is selected, the scanning speeds of the two light source units and the
positions of the lens and mirrors 4 and 5 are changed, altering the distance between the
original and the drum. At any magnification ratio, light source unit 2 travels at a half speed
of unit 1.
A cooling fan is installed to exhaust heat generated by the halogen lamp. If an abnormally
high temperature is detected around light source unit 1, the optical section thermostat (TH3)
shuts off the supply to the halogen lamp.
SM
HL CONT
LM
LHP
SW
CPCB
MPCB
HL
HPSW AES
TH3
CN1-1
CN1-3
CN2-7
CN4-5 CN5-2 CN5-7
–
CN5-12 CN8-1
–
CN8-6 CN5-5 CN7-2
Original
Figure 1-3-13 Exposure section block diagram