B Head Duty Control Adjustment - Epson TM-U375 Technical Manual

CONFIDENTIAL
Adjustment B Head Duty Control Adjustment
Perform this adjustment when the print head unit or main circuit board unit is replaced. The following problems may occur
if the adjustment is not performed:
Since the adjustment is performed based on the coil temperature at room temperature, do not start the adjustment until
the coil temperature lowers to room temperature.
Adjust-
ment
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• The print head may be damaged or the fuse may be blown by heat generation.
• The print speed may slow down.
(Because print duty control is performed frequently during printing, printing may also stop frequently.)
Step
Turn on the printer.
Open the cover.
Load the paper roll.
Install the ribbon cassette.
Turn off the printer.
Turn on the printer while pressing
the FEED button.
Press the FEED button at least three
times.
Close the cover.
The DIP switch settings are printed.
(Refer to the print sample on the
right.)
Turn off the printer.
Measure the room temperature.
Cut the paper roll.
Turn over the printer and remove
the Cover-ROM.
Set the DIP switch #4, #5, and #5 of
the switch bank 2 according to the
printout.
Procedure
Adjustment Notes
<Print Sample>
(Example)
When the room temperature is 27°C (80.6°F) in the above print
sample, set the DIP switches as follows:
DIP SW2 #4: OFF
DIP SW2 #5: OFF
DIP SW2 #6: ON
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