Confidential
Troubleshooting 13
Epson WF-5690/4640/4630/5620/5190/5110 series Revision D
Note *1: On the premise on this table, PG does not change and the Rear ASF does not operate during the sequence.
*2: Executes when the detected temperature is under 5 ℃ (41)by the thermistor on the Printhead.
*3: The Printhead is capped with the Cap of the Ink System but the Carriage is not locked by the CR lock in order to shorten the
time before printing starts. The Carriage is locked when the printer enters the power saving mode without any operation after it
is turned on.
3-2.The carriage moves to the 0-digit side slowly up to the position
where the Front ASF turn off.
OFF ---
3-3.The carriage moves to the 80-digit side slowly and passes by the
CR lock.
↓
---
4. PF initialization
4-1.The PF Motor rotates clockwise for approximately one second.
↓
---
4-2.The PE sensor checks if paper exists, and the PF Motor rotates
clockwise for approximately 0.5 seconds.
↓
---
5. Low temperature operation sequence
5-1.The carriage moves back and forth between CR lock and the left
Frame two times.
↓
---
6. Checking waste ink overflow
6-1.Reads out the waste ink counter value of the Maintenance Box
to check waste ink overflow.
↓
---
7. Detecting ink cartridge and initializing ink system
7-1.The carriage moves slowly to the ink detection position.
↓
---
7-2.The Decompress Motor is driven and Diaphragm Pump sucks
the ink in the ink cartridges.
↓
Decompress
and vent to
atmosphere
7-3.While monitoring the ink end sensor, the Decompress Motor is
driven again and the Diaphragm Pump sucks the ink.
↓
Decompress
and vent to
atmosphere
7-4.Detects the ink remaining.
↓
---
7-5.The carriage returns to its home position.
↓
---
Table 1-1. Power-On Sequence
Operation
Movement of
Components
Front ASF drive
condition
Decompress
motor
80
HP
80
HP
80
HP
80
HP
80
HP
80
HP
80
HP
80
HP
80
HP
80
HP
80
HP
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