Brother PT-9200PC, Service Manual, Page: 69 / 93

III - 6
(3) Printing interruption (margin cutting drive, half cutting drive, and buffer full
drive)
a) At the interruption of printing, the motor overruns (five through-down
pulses) before it stops.
b) If cutter operation is necessary, full or half cutting is performed.
c) The motor rotates counterclockwise for 70 pulses.
d) The motor rotates clockwise to resume printing with 3 dots printed again.
Fig. 3.2-3 Stepping Motor Drive Circuit
(4) Printing at low speed
If the head temperature is 41
°
C or higher during printing on laminated or non-
laminated tapes, low speed printing is performed to ensure printing quality.
The through-up pulses (including pre-excitation) and the through-down pulses
(including post-excitation) are 56 and 5 pulses, respectively.
The rate of low speed printing is 426 pps (2.35 msec/pulse).