EPSON Perfection V700 Photo Revision A
Operating Principles Engine Operation Outline 21
2.1.2 TPU Carriage Unit Outline
The TPU Carriage Unit consists of TPU Inverter Board, Lamps (light
source), SUB_C Board, and SUB_D Board.
See Figure 2-3.
Figure 2-3. TPU Carriage Unit Configuration
Inverter Board converts DC to AC and boosts the voltage to generate
the current necessary to power the Lamps.
Lamps used as the primary light source are white cool-cathode
fluorescent lamps. If the light output becomes unstable, the Panel LED
flashes and the scanner enters standby mode until it becomes stable.
SUB_C Board and SUB_D Board each contain LEDs to generate
infrared light.
Front
Rear
Lamps
SUB_CBoard
SUB_DBoard
LEDs
TPUInverterBoard
LED