Star Micronics TSP200 - Manual

– 12 – PRINCIPLES OF OPERATION (1) Main Logic Board The main logic board’s CPU passes data transmitted from the host computer into the local RAM. It then reads the datafrom the RAM, arranges it in accordance with the ROM program, and prints the results by issuing appropriate drive signalsto the prin...

– 14 – PRINCIPLES OF OPERATION 2-1-2. Parallel interface Fig. 2-3 Parallel interface When the printer is ready (BUSY is LOW), the host computer transmits eight bits of parallel data (DATA1,...,DATA8)to CN4. The data passes through the gate array and moves into the CPU. Printer signals from the CPU (...

– 15 – PRINCIPLES OF OPERATION 2-2. Data Arrangement and Printing 2-2-1. Arrangement The CPU reads data sequentially from RAM and arranges this data in accordance with program instructions stored inEPROM. The arranged data is then converted from parallel to serial form. The gate array then outputs t...

– 16 – PRINCIPLES OF OPERATION Fig. 2-5 Block Diagram of Drive IC 2-2-3. Head current control Although the thermal printhead has four different STROBE lines, in fact it uses only three strobe signals to control its 576elements. Specifically, each signal drives 192 of these elements. The signal/eleme...

– 17 – PRINCIPLES OF OPERATION Strobe signals are output in one of five patterns, depending on the number of dot lines that are simultaneously ON.The following table shows each of the patterns.Figure 2-7 shows the timing for Pattern (5). Strobe Signal Output Pattern STB1 STB2 STB3 0 STB1+STB2+STB3 3...

– 18 – PRINCIPLES OF OPERATION Fig. 2-7 Timing Chart 2-2-4. Head current control Heat buildup in the thermal printhead can cause print quality to degrade. To maintain uniform quality, the printer variesthe energizing time (time that STROBE remains LOW) in accordance with the head temperature.The pri...

– 20 – PRINCIPLES OF OPERATION STB1 STB2 STB3 LF COMMON T3 T3 T3 STB1 STB2 STB3 LF COMMON T2 T2 T2 STB1 STB2 STB3 LF COMMON T1 T1 T1 The feed-motor pulse width varies according to the strobe output pattern (where the output pattern is determined by theprint rate, as described above). The following d...

– 23 – PRINCIPLES OF OPERATION 3. Printer Mechanism 3-1. Thermal Printhead The TSP400 printers utilize thermal line printing. The thermal printhead consists of a horizontal line of 576 heat elements.These elements print one line of dots at a time as the paper passes over the head. The printhead is f...

CHAPTER 3 PART REPLACEMENT AND RELATED ADJUSTMENT This chapter presents printer disassembly and reassembly procedures. Please note the following importantpoints. 1. Always disconnect the power cord from the AC outlet before beginning work. 2. Except where otherwise indicated, the reassembly procedur...

CHAPTER 5 PARTS LIST HOW TO USE PARTS LIST (1) DRWG. NO.This column shows the drawing number of the illustration. (2) REVISED EDITION MARKThis column shows a revision number.Parts that have been added in the revised edition are indicated with “#”.Parts that have been abolished in the revised edition...

– 38 – 1. Printer Assembly 1-1. Disassembly Drawing 1-1-1. TSP212-120/230 17 25 24 22 12 26 7 13 18 29 27 5 34 1 27 4 A E C F G B D D B C A F G E 35 31 32 19 11 3 10 9 2 6 23 8 33 21 28 20

– 40 – 1-1-3. TSP242-24 27 17 25 25 29 27 5 26 28 1 4 13 26 26 8 A H E C F G B D D B C A F G E 18 22 36 36 22 24 12 11 10 9 2 21 32 7 3 6 H 15 23 16 20 14 20 27 19 30 30 26 25 25 34 37 33 20

– 46 – 3. Cutter Unit 3-1. TSP200-120/230 D R W G . N O . R E V . P A R T S N O . P A R T S N A M E Q ’ T Y R E M A R K S R A N K 1 0 4 9 9 1 5 1 2 C U T T E R 4 0 2 2 - 2 4 V 1 S 2 3 2 0 2 5 0 4 0 C U T T E R E J E C T C O V E R T S P 2 1 3 4 5 0 4 9 9 3 0 P O L A R I T Y L A B E L Q M B - 0 6 S 1 ...

– 48 – 4. Wiring Scheme of Printer 4-1. TSP200-120/230 123456789 10111213141516171819 · 30313233343536 123456789 123456789 101112131415161718192021222324 VHVHVHDI VCCBEOGNDHGNDHGNDLCLK GNDHGNDH GNDHGNDHDOTHTHVHVH 123456 CMNCMNLF#2LF#4LF#3LF#1 123456 F-GNDEXT1+24V+24VEXT2CSW 1234 +24VM-GND+5VGND 1234...

– 64 – 8. Paper Near-End Sensor 8-1. Circuit Diagram 8-2. Parts List D R W G . N O . R E V . P A R T S N O . P A R T S N A M E Q ’ T Y R E M A R K S R A N K T R 1 0 7 2 2 7 8 5 3 T R A N S I S T O R 2 S C 1 7 4 0 S E 1 P S 1 0 8 3 0 0 0 8 2 P H O T O - I N T E R R U P T E R P S 6 0 0 2 A - K S 1 R 1...