EPSON Stylus Photo R1800/R2400
Revision B
Operating Principles
Electrical Circuit Operating Principles
31
When the Carriage Unit is Out of the Home Position
1.
When the PG position is other than PG++ after power-on, the drive of the
APG Motor is transmitted to the Carriage Shaft, and the PG position
changes to PG++.
2.
The drive of the CR Motor is transmitted to the Carriage Unit, and the
Carriage Unit returns to the home position at slow speed.
3.
The drive of the PF Motor is transmitted to the PF Roller and Paper Eject
Rollers (front and rear), which then rotate for about 2 seconds.
4.
After the Carriage Unit has moved leftward by the specified number of
steps, the Wiper is set, driven by the Pump.
5.
After the Carriage Unit has returned to the home position, it moves leftward
again by the specified number of steps. And, driven by the Pump Motor, ink
is sucked for about 4 seconds and then the Wiper is set, and the CR Lock
is placed.
6.
The Carriage Unit performs HP detection operation in the following path.
Home position
⇒
Right frame
⇒
CR Lock confirmation position
⇒
Right frame
⇒
Home position
7.
The drive of the Pump Motor is transmitted to the Cap Unit, the Cap opens
(lowers), and the CR Lock is released.
8.
The Carriage Unit returns to the home position, and the PG position
returns from PG++ to PG Type.
9.
The PF Motor drive is transmitted to the PF Roller and the Paper EJ
Rollers (front and rear) to rotate them for about 2 seconds.
10. The Step 7 to 9 of
"When the Carriage Unit is in the Home Position with the
are performed, and the Carriage Unit is locked.
2.3 Electrical Circuit Operating Principles
The electrical circuit of Stylus Photo R1800 consists of the following circuits.
Control circuit board
: C589 MAIN
Power supply circuit board : C589 PSB
Control panel board
: C589 PNL
Control panel B board
: C589 PNL-B
The following shows how the four circuit boards are connected.
Figure 2-12. Electrical Circuit Block Diagram
PNL Board
MAIN Board
PSB/PSE Power
Supply Board
Power OFF +3.3VDC
+42VDC
Printer
Mechanism
CR Motor
PF Motor
ASF Motor
Head drive circuit
Sensors
Pump Motor
APG Motor
Summary of Contents for R1800 - Stylus Photo Color Inkjet Printer
Page 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 15: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 35: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 68: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Page 128: ...C H A P T E R 5 ADJUSTMENT ...
Page 172: ...C H A P T E R 6 MAINTENANCE ...
Page 181: ...C H A P T E R 7 APPENDIX ...
Page 196: ...EPSON Stylus Photo R1800 R2400 Revision B Appendix Circuit Diagram 196 C589 PNL circuit board ...
Page 198: ...C H A P T E R 8 STYLUSPHOTOR2400 ...