Perfection 4870 Photo Revision A
OPERATING PRINCIPLES Engine Operation Outline 21
2.1.1.2 TPU Carriage Unit outline
The TPU Carriage Unit consists of TPU Inverter Board, Lamps (light source), SUB_C
Board, and SUB_D Board. (Refer to figure 2-3.)
Figure 2-3. TPU Carriage Unit Configuration
TPU Inverter Board Boosts +24VDC and converts DC to AC to generate
the voltage for driving the Lamps (white cool cathode
fluorescent lamps).
Lamps White cool cathode fluorescent lamps are used as a
light source. When the amount of light is not stable, the
Panel LED is flashes and enter the standby mode until
it becomes stable.
SUB_C Board/ Each board has LEDs to generate an infrared light.
SUB_D Board
TPU Inverter Board
LEDs
Front
Rear
SUB_D Board
SUB_C Board
Lamps
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