Ink System Mechanism; Electrical Circuit Operating Principles - Epson Stylus C87 Service Manual

EPSON Stylus C87/C88/D88

2.2.4 Ink System Mechanism

The Ink system mechanism consists of pump mechanism and capping mechanism with
wiper mechanism.
2.2.4.1 Pump Unit Mechanism
The PF motor is a source of power to activate the pump unit.
Table 2-3. PF Motor Rotational Direction & Ink System Mechanism
Directions *
• Absorbs the ink by the Pump Unit
Counterclockwise
Clockwise • Release pump.
Note *: The PF Motor rotational direction = seen from the left side of the printer.
2.2.4.2 Capping Mechanism
The Capping mechanism covers the printhead with the cap to prevent the nozzle from
increasing viscosity when the printer is in stand-by state or when the printer is off.
OPERATING PRINCIPLES
Functions

Electrical Circuit Operating Principles

2.3 Electrical Circuit Operating Principles
The electric circuit of the Stylus C87/C88/D88 consists of the following boards.
Main board: C528 MAIN Board
Power supply board: C528 PSB/PSB board
Panel board: C528 PNL board
This section provides block diagram of both C528 MAIN Board and C528 PSB/PSE
Board,C528 PNL board.
C528 PNL Board
C528 Main Board
+42V
PowerOFF
C528 PSB/C528 PSE Board
Figure 2-3. Electrical Circuit Block Diagram
Revision A
Printer Mechanism
CR Motor
PF Motor
Head Driver Board
Sensors
CSIC Unit
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