General Specifications Printing method Resolution Printable width Printing speeds Printable characters Character matrixes Paper Recommended brands Width Thickness Roll diameters Internal Interface Dimensions and weight Power supply Ambient conditions Autocutter (TSP412) SPECIFICATIONS AND OPERATION Line thermal direct 8 dots/mm (H) 8 dots/mm (V) 75 mm in Line Mode;...
DIP-Switch Settings DIP switches are located on the interface PCB. The number of switches depends on the interface type. Setting the DIP Switches 1 Remove the screw holding the ROM cover in place. (The screw is located at the base of the paper-roll holder.) 2 Remove the ROM cover, exposing the main and interface PCBs.
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SPECIFICATIONS AND OPERATION DIP switches VP4 (Black-mark sensor) EPROM Opening under ROM cover 3 Set the DIP switches on the interface PCB. DIP-switch values 1 RS232C interface This board has a single 8-bit DIP switch. Switch settings are as follows. Switch Setting Baud...
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Baud 2400BPS 4800BPS 9600BPS 19200BPS Mode 1-8 ON DC1/DC3 invalid Printer selected DC1/DC3 effective Printer selected Addressable Printer de-selected To select a mode: With an RS-232C interface, use DIP switches 1-7 to select the mode. With an RS-422A interface, use DIP switch 2 RS422A interface This board has two DIP-switches: one 8-bit switch and one 4-bit switch.
SPECIFICATIONS AND OPERATION Print-Density Adjustment Adjust the print density in accordance with the sensitivity of the paper being used. The adjustment procedure is as follows. Density Adjustment Aperture 1 Remove the interface cover, located the rear side of the printer. The cover fits into place; no screws are used. 2 The density adjustor (variable resistor) is now accessible through the aperture located to the left of the interface connector.
Sensor Adjustment There are three different sensors: the transmissive sensor (label start-position detector), the black-mark sensor, and the paper-out sensor. Adjustment procedures are described below. First note the following general points. • The transmissive sensor level requires precise setting. Because transmission rates vary widely among different types of label paper, we recommend that the sensor be readjusted each time the user changes to a different paper type.
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SPECIFICATIONS AND OPERATION Sensor adjustment procedures are as follows. Remove the ROM cover, located beneath the paper-roll holding area. Hold down the FEED and ON LINE buttons while switching on the power, and continue to hold them down until you hear a triple beep. (This will take about five seconds.) When you hear the triple beep, release the buttons to enter sensor-adjustment mode.
Setting Memory Switches from the Control Panel The TSP400 uses EEPROM memory switches in place of corresponding hardware switches. All EEPROM switch settings can be changed by software. A number of these switches are also changeable from the control panel.
SPECIFICATIONS AND OPERATION Test Print To generate a test print (self-test), hold down the FEED button while switching on the power. Note: The test print continues as long as the FEED button is held down. HEX Dump Set the printer into hex-dump mode as follows: hold down the ONLINE button and switch the power on, then release the ONLINE button as soon as you hear a single beep.
Page/Line Mode Switch The TSP400 series supports two entirely different command sets: “Page Mode” and “Line Mode.” You can select the mode either by software or from the control panel. To select from the control panel, proceed as follows. NOTE: This function will not become meaningful until Line Mode software has been introduced.
SPECIFICATIONS AND OPERATION 10. Exposing the Peripheral Unit Connector When operating in Line Mode, the printer can use the peripheral unit connector to drive a cash drawer or other such external device. But note that the connector is originally hidden by a portion of the interface cover. Connector cover Fig.
11. Changing the Interface Board You can change the printer’s interface by replacing the interface board. The replacement procedure is as follows. Printer 1 Remove the interface cover, located on the rear side of the printer. 2 Remove the three screws holding the interface board in place. 3 Remove out the board by pulling on the pull sheet fastened to the connector.
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THEORY OF OPERATION This chapter describes the operating principles of the circuitry and printer mechanism. Block Diagram ... Main and Interface PCBs ... 2-1. Interface ... 21 2-1-1. RS232C ... 21 2-1-2. RS422A ... 22 2-1-3. Parallel interface ... 23 2-2.
1. Block Diagram The following diagram illustrates the relationship between the control board (main PCB) and its peripherals. Data flow (Host computer) Interface board RS232C, RS422A, or parallel Gate array (16) EPROM (16) Control PS-RAM panel S-RAM (backup) (16) Kanji ROM DC-DC converter Power unit Main PCB...
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THEORY OF OPERATION 1. 1 Control board The interface board relays data from the host computer to the main board. The main board’s CPU stores the data into local RAM. It then reads out the data, edits it according to the control program stored in the board’s ROM, and prints the results by issuing appropriate drive signals to the printer mechanism.
Main and Interface PCBs The main PCB and interface PCB provide the drive circuitry for the TSP-400 printer series. The two boards are connected via 40-pin connectors. 2-1. Interface 2-1-1. RS232C interface R-CH Data flow from host to printer: IC1 receives serial data from the host computer via RXD, converts the signal voltage from RS232C level to TTL level, and passes the result to the CPU.
THEORY OF OPERATION 2-1-2. RS422A interface RD (+) – RD (–) CS (+) – CS (–) RS (–) RS (+) SD (–) SD (+) RS422A Interface PCB IC1 operates as the RS422A driver and receiver. Data flow from host to printer: IC1 receives serial data from the host computer via RD, converts the signal voltage from RS422A level to TTL level, and passes the result to the CPU.
2-1-3. Parallel interface DATA 1 DATA 2 DARA 3 DATA 4 DATA 5 DARA 6 DATA 7 DATA 8 STROBE BUSY ERROR SELECTED PAPER OUT LS05 Parallel Interface PCB The host computer sends eight bits of parallel data to CN3 when the printer is ready (when BUSY is LOW). The data passes through the interface PCB and gate array, then moves into the CPU.
THEORY OF OPERATION 2-2. Editing and Printing 2-2-1. Editing The CPU reads data sequentially from RAM and edits it in accordance with program instructions stored in EPROM. The edited data undergoes parallel-to-serial conversion in the gate array, and is then output to the thermal head’s drive controller.
CLOCK LATCH STROBE1 STROBE2 STROBE3 STROBE4 STROBE5 COMMON 2-2-3. Head current control Heat buildup in the head during operation can cause print quality to degrade. To maintain uniform quality, the printer varies the energizing time (time that STROBE remains LOW) in accordance with the head temperature. The thermal head’s surface temperature is calculated based on the resistance value of an attached thermistor.
THEORY OF OPERATION 2-3. Feed-Motor Drive Circuit The printer employs a 4-phase step motor (phase 1-2 excitation) to implement paper feed. The motor rotates through a certain angle each time it receives a pulse from the drive circuit. The following diagram illustrates the phase 1-2 excitation method.
2-4. Power-On Reset Circuit Immediately following power-on the printer executes a power-on reset, initializing all circuit elements. The power-on reset serves as protection against operational errors. The power-on RESET signal is maintained for approximately 160ms. The reset circuit is illustrated below. RESET RESET IC At power on, voltage-detector circuit IC4 (M51953BL) outputs a LOW signal from its OUT terminal.
THEORY OF OPERATION 2-5. +5V Line Voltage Detector Circuit The voltage-detection IC (IC4 in Fig. 2-10) detects momentary drops or unstable levels in the +5V line voltage. IC4 operation is illustrated by the equivalence circuit shown below. Fig. 2-11 Equivalence Circuit for Voltage Detecting IC Fig.
3-1. Thermal Head The TSP400 printers employ thermal line printing. The thermal head consists of a horizontal line of 640 heat elements. These elements print one line of dots at a time as the paper passes over the head. The head is fixed in position; only the paper moves.
THEORY OF OPERATION 3-3. Detectors Paper-Out Detector The paper-out detector is located at the paper entry slit. The detector consists of a reflective photosensor. The photosensor’s phototransistor remains ON while paper is present. It goes OFF when paper runs out, generating output of a paper-out signal.
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THEORY OF OPERATION Head-Up Detector This detector consists of a leaf switch indicating whether the head is closed (in contact with the platen) or open (separated from the platen). The leaf switch is closed when the head is closed; it opens when the head is opened. Detection signal Leaf switch Fig.
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PARTS REPLACEMENT AND RELATED ADJUSTMENTS This chapter describes disassembly and reassembly procedures. Please take note of the following. ALWAYS disconnect the power cord from the AC outlet before beginning a disassembly or reassembly procedure. Except where otherwise stated, the reassembly procedure is the reverse of the disassembly procedure. Coat screw heads with locking sealant after completion of reassembly.
Upper Casing Unit <TSP412D> Disconnect the power cord from the AC outlet. Remove: Upper cover 1 Two tapping screws 2 Upper casing unit 3 Pull forward and remove. Connector 4 Screw 5 <TSP442D> Disconnect the power cord from the AC outlet. Remove: Upper cover 1 Two tapping screws 2...
PARTS REPLACEMENT Control-Panel Board Remove: Upper casing unit (See 1. above.) Two tapping screws 1 Front cover 2 Two tapping screws 3 Control-panel board 4 – 36 –...
PARTS REPLACEMENT Main PCB, Interface PCB <TSP412D> Remove: Upper casing unit (See 1. above.) Six tapping screws 1 Mechanism chassis 2 Six connectors 3 Interface cover 8 Three screws 4 Interface PCB 5 Four screws 6 Main PCB 7 <TSP442D> Remove: Upper casing unit (See 1.
PARTS REPLACEMENT Power Unit Disconnect the power cord from the AC outlet. Remove: Upper casing unit (See 1. above.) Three screws (See 4. above.) Interface PCB (See 4. above.) Screw 1 Four screws 2 Lower casing chassis 3 Connector 4 Two tapping screws 5 Shield chassis (A) 6 Connector 7...
PARTS REPLACEMENT Printhead unit Remove the upper casing unit. (See 1. above.) Pull the pressure stay 1 forward to open the head frame unit 2. Slide the head clamp 3 in the direction indicated by the arrow. Remove the printhead unit 4. Remove the head connector 5.
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Maintenance Proper maintenance is necessary to maintain printer performance and forestall potential problems. Please carry out maintenance as described below. 1-1. Cleaning Surface dirt Clear away dirt with a soft cloth. If necessary, apply a small quantity of alcohol to the cloth to improve cleaning power.
Proper lubrication is essential for maintaining the printer’s performance level and preventing breakdowns or other problems. 2-1. Lubricants Choice of lubrication can significantly affect the printer’s performance, longevity, and low-temperature characteristics. We recommend the following lubricant for the TSP400 series. Type Name Manufacturer...
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READING THE LISTS DRWG. NO. Corresponds to the drawing number or to the silk-screened number on the board to which the part is mounted. REVISED EDITON MARK This 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 are indicated with “*”.
1-2. Parts List DRWG.NO. REV. PARTS NO. 87391070 LOWER CASE CHASSIS UNIT 87393030 POWER SUPPLY UNIT SLS-060P-50 87393090 POWER SUPPLY UNIT SLS060PH-50A 82011481 SHIELD CHASSIS A 87393040 CORD SET UNIT US 87393070 CORD SET UNIT EC 87393080 CORD SET UNIT UK 04991220 CORD BUSHING SR-5N-4 82011490 SHIELD CHASSIS B 04991254 CORD CLAMP EDS-1208U...
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DRWG.NO. REV. PARTS NO. 00930803 SCREW TAT 3-8 PT 01903018 SCREW TR 3-6 WS/WF 01903059 SCREW TR 3-5 FL 01903069 SCREW TAT 3-5 ST-FL 01903069 SCREW TAT 3-5 ST-FL 01903099 SCREW TR 3-4 WS 01914035 SCREW TAT 4-10 PT-FL 01914036 SCREW TR 4-5 WS 00630404 SCREW TR 3-4 00930803 SCREW TAT 3-8 PT 00930500 SCREW TAT 3-5 ST...
2-2. Parts List DRWG.NO. REV. PARTS NO. FRAME ASSY 37412300 PF MOTOR ASSY 37417000 REFLECT SENSOR BD UNIT 83100460 IDLER GEAR 15X50X0.5 87340390 HEAD DETECTOR ASSY 31375210 PLATEN 31375211 PLATEN 33102210 GEAR 28X0.5 80203041 DRIVE SHAFT BEARING 33910020 PAPER GUIDE A 37417010 TRANSMIT SENSOR BD UNIT 33910030 PAPER GUIDE B 33910031 PAPER GUIDE B...
C. Parallel Interface Type PARALLEL I/F BOARD STROBE DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 DATA 8 Vcc(+5V) ERROR BUSY SLCT F-GND Vcc(+5V) RETURN-GND RETURN-GND RETURN-GND RETURN-GND RETURN-GND RETURN-GND RETURN-GND RETURN-GND RETURN-GND RETURN-GND RETURN-GND Vcc(+5V) RETURN-GND...