Rev. 3.02
- 38 -
SRP-350
4-3-10 Thermal Printer Head Circuit
First, the CPU sends a Serial Clock and Serial Data 256Bits(32Bytes) to the Shift Register of the Thermal
Printer. The Serial Data are stored to each Shift Register in the Thermal Printer. Because the Data#1 Pin and
the Data#2 pin are shorted on Main PCB, the Data(256Bits) are stored in both Shift Register#1 and #2.
Second, the CPU send a Latch Signal to the Thermal Printer. Then, the Data of both Shift Register#1 and #2
(256*2=512 Bits) are moved to the Latch Register. After that, the CPU sends a Strobe Signal to the Thermal
Printer. Then, the Printer outputs the Serial Data. Each Strobe Signal manages the Printer Dot.
STB No.
DOT No.
DOTs/STB
SRP-350 Strobe Processing
STB1
1 ~ 256
256
STB2
257 ~ 512
256
The content of data is same.
[Figure 4-13 Thermal Printer Block Diagram]
[Figure 4-14 Thermal Printer Timing Waveform]
Summary of Contents for SRP-350 PlusA
Page 1: ...Service Manual SRP 350 Thermal Printer Rev 3 02 http www bixolon com ...
Page 16: ...Rev 3 02 16 SRP 350 3 1 3 Feature Locations Figure 3 3 Feature Location ...
Page 28: ...Rev 3 02 28 SRP 350 4 Hardware 4 1 Wiring Diagram Figure 4 1 Board Wiring Diagram ...
Page 29: ...Rev 3 02 29 SRP 350 4 2 Block Diagram Figure 4 2 Block Diagram ...
Page 51: ...Rev 3 02 51 SRP 350 7 2 System Problem ...
Page 52: ...Rev 3 02 52 SRP 350 7 3 Panel PBA and Sensor Problem ...
Page 53: ...Rev 3 02 53 SRP 350 7 4 Thermal Printer Head and Feed Motor Problem ...
Page 54: ...Rev 3 02 54 SRP 350 7 5 Auto Cutter and Drawer Problem ...
Page 55: ...Rev 3 02 55 SRP 350 7 6 Dip S W and I F PBA Select Problem ...
Page 56: ...Rev 3 02 56 SRP 350 7 7 RS 232C Serial Communication Problem ...
Page 57: ...Rev 3 02 57 SRP 350 7 8 RS 485 Serial Communication Problem ...
Page 58: ...Rev 3 02 58 SRP 350 7 9 IEEE 1284 Parallel Communication Problem ...
Page 59: ...Rev 3 02 59 SRP 350 7 10 USB Communication Problem ...
