Others - Epson Stylus Pro 7400 Service Manual

EPSON Stylus Pro 7400/7800/9400/9800

2.2.6 Others

COVER SENSOR
In order to detect whether the front cover on the lower front of this printer is open or
closed, a cover sensor is mounted on the printer on the left side where the front cover
opens and closes.
This sensor carries out control of operating and stopping of the CR motor and PF motor
drive circuits via the MAIN board's logic circuit after detecting the cover's status. This
control is the same when the paper support level is in the release state.
CIRCUIT BOARD PLACEMENT
The panel unit is located on the right front of the printer and the AC inlet, power supply
circuit board and the MAIN circuit board are mounted in the compartment on the
printer's rear side.
Operating Principles
Cover Sensor
MAIN Circuit Board
Print Mechanism Components
Front Cover
Figure 2-18. Cover Sensor Panel Unit
Power Supply Circuit Board
AC Inlet
Figure 2-19. Circuit Board Layout
Revision B
Panel Unit
166