Power-On Sequence - Epson WF-5690 Series Service Manual

Epson WF-5690/4640/4630/5620/5190/5110 series

1.1.2 Power-On Sequence

This section describes the power-on sequences for this product. The preconditions are as follows.
 Normal power-on sequence

Turning on the printer after turning it off without an error.

Initial ink charge has finished and every cartridge has sufficient ink.

No paper on the paper path.

The Printhead is capped by the cap of Ink System and the CR Lock is engaged normally.

The carriage is locked by the CR lock.

PG position is set to PG1.
1. Printhead initialization and fuse inspection
1-1.Initializes the Printhead, and checks the fuse on the printer
control circuit board.
2. Seeking the home position
2-1.The carriage moves to the 0-digit side slowly and confirms it
touches the Right Frame.
2-2.Regards the position where the carriage touches the Right Frame
as the position of the specified steps from the home position, and
set it as the origin position.
2-3.The carriage slowly moves the CR lock set position.
2-4.The PF Motor rotates clockwise and releases the CR lock.
2-5.The PF Motor rotates counterclockwise and sets the CR lock.
2-6.The carriage moves to the 80-digit side slowly and confirms it
touches the CR lock.
2-7.The carriage returns to its home position.
2-8.The PF Motor rotates clockwise and releases the CR lock.
3. Switching front ASF drive
3-1.The carriage moves to the 80-digit side slowly up to position
where the Front ASF turn on.
Troubleshooting
Table 1-1. Power-On Sequence
Operation
Movement of
Components
HP
80 0
HP
80 0
80 HP 0
80 HP 0
80 HP 0
HP
80 0
80 HP 0
80 HP 0
80 HP 0
80 HP 0
Front ASF drive Decompress
condition motor
OFF ---
↓ ---
↓ ---
↓ ---
↓
---
↓ ---
↓ ---
↓ ---
↓ ---
ON ---
Revision D
12
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