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Diagnostics 7193 Owner’s Guide
Setting Printhead Resistance
This function allows you to change the setting for the printhead resistance. The setting (A-H) must match the letter stamped on the heatsink in back of the printhead. This is visible only by removing the L cover (operator panel) of the printer. Only a trained service representative may remove this cover.
Caution: The DIP switches are set at the factory to predetermined settings and should generally not be changed. If you must change the settings, do so carefully to avoid changing other functions. Run the print test to see what the current selection is for this function. See “Testing The Printer” On Page 23.
1. Turn the power off.
2. Turn the printer over and note what the current DIP switch settings are.
3. Set the switches to the settings in the table that match the letter stamped on the heatsink in back of the printhead.
Switch 1 Switch 2 Switch 3 Switch 4 Switch 5 Switch 6 Printhead Setting
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
Off
Off
Off
Off
On
On
On
On
Off
Off
On
On
Off
Off
On
On
Off
On
Off
On
Off
On
Off
On
A
F
G
D
E
B
C
H
4. Turn the power back on to enter the settings into the EEROM.
The On Line light (green) blinks.
5. Turn the power off.
6. Set the DIP switches to the former settings.
DIP switch 1 must be Off to return the printer to the on-line mode.
36 May 1996
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