Electrical Circuit Operating Principles - Epson Stylus SCAN 2000 Service Manual

EPSON Stylus Scan 2000

2.5 Electrical Circuit Operating Principles

EPSON Stylus Scan 2000 contains the following three electric circuit boards.
o
Main: B101 Main Board
o
Power Supply: B101 PSB/PSE Board
o
Panel: B101 PNL Board
Refer to Figure 2-22 for the major connection of the 3 boards and their roles.
Operating Principles
AC Input
Electrical Circuit Operating Principles
B101 PSB/ B101 MAIN Board
+5V
PSE Board
DC
+42V DC
CR HP
CR Motor
Sensor
PE
Sensor
PF Motor
(Pump Motor)
B/CMY Ink
Out Sensor
Thermistor
Printhead
Nozzle selector
Board
Figure 2-22. Electric Circuit layout
Revision A
Ink End
and P-off time
counters
B101
LED
PNL
ASF Lever
Position Sensor
ASF Motor
Scanner
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