NCR 7156, Руководство по обслуживанию

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7156 Service Guide Chapter 3: Diagnostics
September 1998 39
The green LED flashes when the printer cycles. The settings are entered into EEROM.
The printer begins printing the sample receipt.
Note: If the Sample Receipt Via Feed Button option is selected (see the DIP switch settings
above), the printer stops printing after all the character sets have been printed.
4. Press the paper feed button to repeat the test.
5. Press the On Line button (or plunger) on those models to stop the test.
6. Press the reset button on those models to stop the test.
7. Set the DIP switches back to the settings for normal operation (on-line mode).
See “Appendix B: Communication Information” for the switch settings.
8. Close the front cover and press the On Line button (or plunger) on those models.
The green LED flashes when the printer cycles. The settings are entered into EEROM.
9. Press the reset button on those models.
The green LED flashes when the printer cycles. The settings are entered into EEROM.
Level 2 Diagnostics
Level 2 diagnostics run during normal printer operation. When the following conditions
occur, the printer automatically turns off the appropriate motor, disables printing to
prevent damage, and turns on the red LED (flashes the red LED if the receipt printhead is
too hot or the voltages are out of range—on RS-232C models only):
•
Receipt paper out
•
Receipt cover open
•
Front cover (cassette door) open
•
Receipt knife unable to home
•
Slip carriage motor jam
•
Receipt printhead too hot or voltages out of range (red LED flashes)
See “Troubleshooting” later in this book for more information about other conditions that
may occur and how to correct them.
Level 3 Diagnostics
Level 3 diagnostics keep track of the following tallies and print them on the receipt during
the receipt test. See “Sample Print Test” later in this chapter.
•
Thermal print lines printed
•
Number of knife cuts
•
Number of hours printer is on
Print Test
Test the receipt station using the simple tests described in this section. To further test the
receipt station or to test the slip station, run the level 1 diagnostic tests described in “Level
1 Diagnostics” earlier in this chapter.
The tests described here print various settings which can be used to check the printer's
configuration. The settings are listed in “Level 1 Diagnostics.” The tests also print all