Sam4s ER-390 SERIES Service Manual page 44

7 Special Circuit Descriptions
7-5 Thermal Printer Circuit
CLK
DATA
LATCH
STB1,2,3
STB4,5,6
7-8
384 Bits
Printing(1~192)
Printing(193~384)
Figure 7-10 Thermal Printer Timing Waveform
384 Bits 384 Bits
SAM4S ER-390 SERIES