Epson SQ-1170 Service Manual page 63

REV.-A
a) CL1 (Normal cleaning)
This operation consists of
cleaner blade operation-2.
b) CL2 (Intensive cleaning)
This operation is performed when the cleaning switch is pressed before 200 lines are printed after the
last cleaning operation. In other words, the intensive cleaning is performed when the normal cleaning
fails to correct abnormalities.
This operation consists of the rubbing operation, ink charge operation for 7 seconds, negative pressure
release operation, and cleaner blade operation-2.
c) CL3 (False cleaning)
The false cleaning will be performed when the user presses the cleaning switch 6 times or more before
500 lines are printed after power on. This prevents the user from consuming an excessive a mount
of ink in performing the cleaning operation for too many times.
This operation consists of the cleaner blade operation-1, ink charge operation for 2 seconds with the . .
slider valve released, negative pressure release operation, and cleaner blade operation-2.
(3) Refreshing operation
This operation is performed to prevent the ink in the nozzles from getting sticky.
Two modes of operation are provided as follows.
a) Refreshing operation-1
This operation is performed every 15 seconds in the continuous printing mode. The carriage is moved
to the flushing position and then 10-pulse ink flushing operation will be performed.
b) Refreshing operation-2
This operation is performed after every 100 times of refreshing operation-1. It is followed by the cleaner
blade operation-3.
(4) Waiting operation
This operation is performed when more than 3 seconds has passed after the last character is printed.
This operation consists of 2800-pulse ink flushing operation (or less, depending on the number of
cleaning operations performed so far), cleaner blade operation-3 (performed in some cases, also
depending on the number of cleaning operations performed so far), and capping.
(5) Initial charge operation
This operation is performed to replace the head preserving liquid with ink. It is performed when the
user operates the initial charge operation.
Three different modes of operation are used depending on the printer conditions.
the cleaner blade operation-1, negative pressure release operation, and
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