Power-On Sequence - Epson L800 Service Manual

L800/L801

4.1 Power-On Sequence

This section describes the power-on sequences.
Condition
Completing ink charge.
No CDR Tray and no paper on the paper path.
The stacker is not set on the CDR printing position.
The Printhead is capped with the Cap of the Ink System.
The Carriage is locked by the CR lock.
Table 4-1. Operation of the power-on sequence
*1
Operation
1. Checking waste ink overflow
1-1.Reads out the protection counter value to check
waste ink overflow
*4
2. Avoiding deadlock sequence
2-1.The carriage moves to the 0-digit side slowly and
confirms it touches the Right Frame.
2-2.The carriage slightly moves to the 80-digit side.
2-3.The PF Motor rotates clockwise and releases the
CR lock.
2-4.The carriage moves to the 0-digit side slowly and
confirms it touches the Right Frame.
2-5.The carriage returns to its home position.
3. CDR Tray Sensor check
3-1.Checks with the CDR Tray Sensor if the CDR
Tray is not set.
3-2.The PF Motor rotates clockwise to eject the CDR
Tray.
Appendix
Carriage/PF roller
*3
PG
*2
movement and position
Any
CR lock CR
position
CR lock
is released
Table 4-1. Operation of the power-on sequence
*1
Operation
4. Releasing the CR lock
4-1.The PF Motor rotates clockwise and releases the
CR lock.
5. Seeking the home position
5-1.The carriage slowly moves to the 80-digit side.
5-2.The carriage moves to the 0-digit side slowly and
confirms it touches the Right Frame.
5-3.The carriage slowly moves to the CR lock set
position.
5-4.The PF Motor rotates clockwise and releases the
CR lock.
5-5.The PF Motor rotates counterclockwise and sets
the CR lock.
5-6.The carriage moves to the 80-digit side slowly and
confirms it touches the CR lock.
5-7.The carriage slowly moves to the 0-digit side to
the CR lock set position.
5-8.The PF Motor rotates clockwise and releases the
CR lock.
5-9.The carriage moves to the 80-digit side slowly and
confirms it does not touch the CR lock.
5-10.The carriage slowly moves to its original
position, and home position is fixed.
Afterward, the carriage position is monitored
according to the signals from the CR Encoder.
6. Resetting APG
6-1.The carriage slowly moves to the Right Frame and
stops there.
Revision A
Carriage/PF roller
*3
PG
*2
movement and position
Any
position
(Continue to the next page)
97
Confidential