Specifications

7193 Owner’s Guide Chapter 4: Diagnostics
August 1998 27
On Off On Off On On One Line Data Buffer
4. Turn the printer back on to enter the settings into the EEROM.
The On Line light (green) blinks.
5. Turn the printer off and set the DIP switches to the former settings.
DIP switch 1 must be Off to return the printer to the on-line mode.
6. Turn the printer back on.
Setting Printhead Resistance
This function allows you to change the setting for the printhead resistance. The setting
must match the character (A-D, 0-3) 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.
Note: The operator panel may differ depending on the model. To turn the printer on or
off, (on-line or off-line), use a paper clip or other pointed object to depress the plunger (in
place of the On Line button) on models with that item.
Caution: The DIP switches are pre-set at the factory and should generally not be changed.
If you must change them, do so carefully to avoid changing other functions. Run the print
test to see the current settings for this function. See “Testing The Printer” in chapter 2.
1. Turn the printer off.
2. Turn the printer over and note what the current DIP switch settings are.
3. Set the switches to match the character stamped on the heatsink in back of the
printhead.
Printhead Setting
Switch 1 Switch 2 Switch 3 Switch 4 Switch 5 Switch 6
Early 7193 Models* Later 7193 Models*
On On On Off Off Off A A
On On On Off Off On B B
On On On Off On Off C C
On On On Off On On D D
On On On On Off Off E 3
On On On On Off On F 2
On On On On On Off G 1
On On On On On On H 0
*Be sure that the settings are correct for the version of the printer. A-D are the same for
all printers. E-H is used for early models only, while 3, 2, 1, 0 are used for later models.
4. Turn the printer back on to enter the settings into the EEROM.
The On Line light (green) blinks.
5. Turn the printer off and set the DIP switches to the former settings.
DIP switch 1 must be Off to return the printer to the on-line mode.
6. Turn the printer back on.