Epson Stylus Photo R800 - Power-On Sequence

EPSON Stylus Photo R800 Revision A
OPERATING PRINCIPLES Printer Mechanism 32
2.2.8 Power-On Sequence
The following explains the operation to be performed when the Carriage Unit is
inside or outside the HP with the printer powered on.
CARRIAGE UNIT INSIDE HP (CR LOCKED)
1. After power-on, the drive of the APG Motor is transmitted to the Carriage
Shaft, and the PG position changes from PG Typ. to PG++.
2. The drive of the CR Motor is transmitted to the Carriage Unit, and the
Carriage Unit performs HP detection operation in the following path.
 Home position ⇒ Right frame ⇒ CR Lock confirmation position
⇒ Right frame ⇒ Home position
3. The drive of the Pump Motor is transmitted to the Cap Unit, the Cap opens
(lowers), and the CR Lock is released.
4. After the Carriage Unit has moved leftward by the specified number of
steps, the Wiper is driven by the Pump Motor to perform the following
operation, and during that period, ink is sucked for about 4 seconds.
 Wiper setting ⇒ Wiper resetting
5. The Carriage Unit returns to the home position, and the PG position
returns from PG++ to PG Typ.
6. 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.
7. After moving between the left and right frames twice, the Carriage Unit
moves to the right end of the Front Paper Guide.
8. The PF Roller and Paper Eject Rollers (front and rear) rotate.
 Rotation for about 4 seconds (slow speed) ⇒ Rotation for about 2
seconds
9. The Carriage Unit returns to the home position and is fixed by the CR Lock.
CARRIAGE UNIT OUTSIDE HP
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 drive of the PF Motor is transmitted to the PF Roller and Paper Eject
Rollers (front and rear), which then rotate and stop as described below.
 Rotation for about 3 seconds ⇒ Stop for about 0.5 seconds ⇒
Rotation for about 2 seconds
10. As soon as the operation in step 9 starts, the drive of the ASF Motor is
transmitted to the LD Roller, and the LD Roller rotates one turn.
11. The operations in Steps 7 to 9 of "Carriage Unit inside HP (CR locked)
(p32)" are performed, and the Carriage Unit is locked.
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