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1.4.5 Self-test Function
Pressing the button while turning on the printer puts the printer in LQ self-test mode. Pressing
the button while turning on the printer puts the printer in Draft self-test mode. You can stop the self-test
temporarily by pressing the button, and you can exit the self-test mode by turning off the printer.
When pages are printed from the CSF, the first sheet is used for scaling the sheet length. Then, the maximum
number of printable lines is printed as the bottom line of the sheet and this number is saved in non-volatile
memory as the default page length. Page lengths are saved individually when a dual-bin CSF is in use.
The self-test prints out the following:
❒ The maximum number of printable lines (only on cut sheets from the CSF)
❒ The pattern of characters shown in the figure below.
1.4.6. Hexadecimal Dump Function
Pressing the and buttons while turning on the printer puts the printer in hexadecimal
dump mode. In this mode, data received is printed out in hexadecimal format, along with the corresponding
ASCII characters. The function is useful to check data received from the host. If a received code is not a
printable ASCII character, the printer prints a period (.) in the ASCII column. When received data remains in
the buffer, that data is printed by pressing the button.
Figure 1-10 Self-test Printout
Figure 1-11 Hexadecimal Printout
Product Description FX-2170 Service Manual
1-32 Rev.A