Epson L800 Service Manual page 99

L800/L801
Table 4-1. Operation of the power-on sequence
*1
Operation
6-2.The PF Motor rotates clockwise while monitoring
the PG Sensor.
6-3.After the PG Sensor switched from Off to On, the
PF Motor rotates clockwise by the specified step
until it detects the PG-- (APG home position).
6-4. After detecting the APG home position, the carriage
slightly moves to the 80-digit side.
6-5. After the PF Motor rotates counterclockwise, it
rotates clockwise to confirm the PG Sensor is set to
On-state.
6-6.The carriage slowly returns to its home position.
7. Setting the APG to PG++
7-1.The carriage slowly moves to the Right Frame and
stops there.
7-2.The PF Motor rotates clockwise and sets to PG++.
7-3.The carriage slowly returns to its home position.
8. PF initialization
8-1.Checks if paper exists by the PE Sensor
PF Motor rotates clockwise for one second.
9. PF Motor measurement
9-1.The PF Motor rotates clockwise for four seconds,
and performs a load measurement.
10.Low temperature operation sequence
10-1.The PF Motor rotates clockwise, and releases the
CR lock.
10-2.The carriage moves back and forth between CR
lock and the 80-digit side for two times.
Appendix
Carriage/PF roller
movement and position
*5
and the
*6
*7
*3
PG
*2
11.Setting the APG to PG--
Any
11-1.The carriage slowly moves to the Right Frame
position
and stops there.
11-2.The PF Motor rotates clockwise and sets to PG--.
11-3.The carriage slowly returns to its home position.
12.CR measurement and PW Sensor initialization
PG--
12-1.The carriage slowly moves to the 80-digit side.
12-2.The carriage performs a load measurement while
moving to the VHCheck position, and records the
detected voltage of the PW Sensor at the specified
three positions, then stops.
12-3.The carriage detects the voltage of the PW
Sensor at the carriage stop position (the black area
at the Paper Guide Front).
12-4.The carriage performs a load measurement while
PG++
moving to the 0-digit side, and stops.
12-5.The carriage performs a load measurement while
moving to the VHCheck position, and records the
detected voltage of the PW Sensor at the specified
three positions, then stops.
12-6.The carriage detects the voltage of the PW
Sensor at the carriage stop position (the black area
at the Paper Guide Front).
12-7.The carriage performs a load measurement while
moving to the 0-digit side, and stops.
13.Detecting ink cartridge and initializing ink system
13-1.The PF Motor rotates clockwise for one second,
and resets the PF Roller.
Table 4-1. Operation of the power-on sequence
*1
Operation
movement and position
*8
*9
Revision A
Carriage/PF roller
*3
PG
*2
PG++
PG--
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98
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