Self-Test; Adjusting The Paper Near End Sensor - SNBC BTP-2002NP User Manual

4.8 Self-test

The self-test lets you know if the printer is operating properly. It checks the control circuits, printer
mechanisms, print quality, firmware version and prints out the settings.
The test is independent of any other equipment or software and can be started as follows:
1) Ensure the printer power is turned off and the top cover is closed properly.
2) Holding on the feed button while turning on the printer, the self-test will start with printing the
configuration information; stop holding the button as soon as the printing starts.
3) Then the printer will print following indication information: "Press and Release FEED key to
print characters" and "Press and Hold FEED key to configure the printer".
4) Press the FEED button for a short time, the printer will print a second page with a pattern
using the built-in character sets; Hold the FEED button for a long time, the printer will enter
button configuration mode.
5) The printer ends and cuts the self-test page automatically.

4.9 Adjusting the Paper Near End Sensor

The remaining detectable amount of paper on the paper roll varies with the inside and outside
diameters of the paper roll core. The minimum detectable amount of paper on the paper roll can be
set by the following method:
Paper
For paper rolls with a core inside diameter (A) of 14mm and a core outside diameter (B) of 22 mm
thick-ness
Detected approx. diameter (C) in mm
(mm)
Level Level
1
0.06
φ26
Note:
The factory setting of the paper near end sensor is level 2.
The value of C and the remaining paper length are calculated values. There may be small
deviations due to variations of the printer mechanics and the paper near end sensor.
If the paper roll has a core of dimensions different from that in above table, the value of C
and the remaining paper length may have different values.
Level Level
2 3 4
φ28 φ30 φ32
Figure 1 Changing the paper-near-end position
Level Level Level
5 6 1
φ34 φ36
2.5m
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User's Manual
BTP-2002NP
Approx. remaining paper length
Level Level Level
2 3 4
3.8m 5.1m 6.5m
Level Level
5 6
8.0m 9.7m
A
B
C