TSC TTP 246M - Print Head Circuit

15
15
TTP-246M/344M Bar Code Printer
Service Manual
3.6 Print Head Circuit
STB1, and STB2 are the print head heating signal. There is a limit for RC heating time of
U15 (74HC123), it can avoid the print head over-heating.
U26 is used to protect print head and avoid the current appears in the improper time.