BIXOLON SRP-350 Service Manual
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BIXOLON SRP-350 Service Manual

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Service Manual
SRP-350
Thermal Printer
Rev. 3.02
http://www.bixolon.com

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Summary of Contents for BIXOLON SRP-350

  • Page 1 Service Manual SRP-350 Thermal Printer Rev. 3.02 http://www.bixolon.com...

  • Page 2: Table Of Contents

    SRP-350 ■ Table of Contents 1. Precaution Segment ............................ 5 1-1 Safety Precautions........................... 5 1-2 Servicing Precaution..........................6 1-3 Precaution for Electrostatically Sensitive Devices (ESDs) ..............7 1-4 Operational Precautions .......................... 7 2. Installation and Operation .......................... 8 2-1 Installation..............................8 2-1-1 AC Adapter Installation ........................
  • Page 3 SRP-350 4. Hardware ..............................28 4-1 Wiring Diagram ............................28 4-2 Block Diagram............................29 4-3 Special Circuit Descriptions ........................30 4-3-1 Power Circuit........................... 30 4-3-2 RESET Circuit ..........................31 4-3-3 Buzzer and Cash Drawer Circuits....................32 4-3-4 I/F PBA Detect Block Diagram......................33 4-3-5 RS-232C Communication Block Diagram..................

  • Page 4: About This Manual

    SRP-350 About ■ About this Manual This Service Manual describes how to perform hardware service maintenance for the BIXOLON SRP-350 Receipt Printer. Notes Notes may appear anywhere in the manual. They draw your attention to additional information about the item.

  • Page 5: Precaution Segment

    SRP-350 1. Precaution Segment Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are replaced. Restore any missing protective shields.

  • Page 6: Servicing Precaution

    SRP-350 1-2 Servicing Precaution WARNING 1: First read the Safety Precaution section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precaution. WARNING 2: An electrolytic capacitor installed with the wrong polarity might explode.

  • Page 7: Precaution For Electrostatically Sensitive Devices (Esds)

    SRP-350 1-3 Precaution for Electrostatically Sensitive Devices (ESDs) 1. Some semiconductor (solid state) devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs); examples include integrated circuits and some field- effect transistors. The following techniques will reduce the occurrence of component damaged caused by static electricity.

  • Page 8: Installation And Operation

    SRP-350 2. Installation and Operation 2-1 Installation 2-1-1 AC Adapter Installation 2-1-2 Interface Cable Installation Figure 2-1 AC Adapter Installation Figure 2-2 I/F Cable Installation 1. Mack sure the printer is turned off with the 1. Turn off the printer, host ECR and Computer.

  • Page 9: Wall Mount Installation

    SRP-350 2-1-5 Wall Mount Installation 1. Press the Push Button. After opening the cover, 2. Remove the three screws from the bottom of the insert the Wall-Guide L , R to the Upper-Left Hole Case-Lower. Separate the Case-Lower from the and the Upper-Right Hole inside of the printer.
  • Page 10 SRP-350 6. After assembling the Case-Lower to Set Body, turn the 7. Attach the BRKT Mount to the wall firmly with the eight Set over and attach the BRKT Hanger to the Case Lower screws. Be sure that the BRKT attached properly to then tighten four screws.

  • Page 11: Operation

    SRP-350 2-2 Operation 2-2-1 Setting the DIP switches The DIP switches are located on the bottom of the printer. The DIP switches are used to set the printer to perform various functions. Follow these when changing DIP switches setting: Turn the printer power switch off.

  • Page 12: Setting The Dip Switch (Ieee1284 Parallel, Usb Interface)

    SRP-350 2-2-3 Setting the DIP switch (IEEE1284 Parallel, USB Interface) • DIP Switch 1 Function Default Auto Line Feed Always enabled Always disabled Reserved Reserved Reserved Reserved Reserved Reserved Reserved • DIP Switch 2 Function Default Code Page Selection Refer to the Following Table 3...

  • Page 13: Hexadecimal Dumping

    SRP-350 2-2-4 Hexadecimal Dumping This feature allows experienced users to see exactly what data is coming to the printer. This can be useful in finding software problems. when you turn on the hexadecimal dump function, the printer prints all commands and data in hexadecimal format along with a guide section to help you find specific commands.
  • Page 14 SRP-350 (A) Serial Self-Test Sheet (B) Parallel Self-Test Sheet Figure 3-13 The Self-Test Sheet - 14 - Rev. 3.02...

  • Page 15: Product Specifications

    SRP-350 3. Product Specifications 3-1 Appearance 3-1-1 Printer Dimensions (mm) Figure 3-1 Printer Dimension 3-1-2 AC Adapter Dimensions (mm) Figure 3-2 Adapter Dimension - 15 - Rev. 3.02...

  • Page 16: Feature Locations

    SRP-350 3-1-3 Feature Locations Figure 3-3 Feature Location - 16 - Rev. 3.02...

  • Page 17: General Specifications

    Table 3-1 General Specification 3-3 Thermal Printer Specifications 3-3-1 Printer Specification Item Description Remark Model • SRP-350 (TPH : KF1803-GF14B - ROHM) Print Method • Thermal Line Printing Dot Density • 0.141 mm (7.09 Dots/mm) Printing Direction • Unidirection with friction feed Printing Width •...

  • Page 18: Character Specification

    SRP-350 3-3-2 Character Specification Item Description Remark • Alphanumeric Characters : 95 Number of Character • Extended Characters : 128 x 34 Page (Including one space page) • International Characters : 32 • 12 x 24 (Font A) (Including 2-dot spacing in horizontal) Character Structure •...

  • Page 19: Tph (Thermal Printer Head) Specification

    SRP-350 3-3-6 TPH (Thermal Printer Head) Specification Item Description Remark Heat Element Structure 2 Heaters / Dot Number of Heat Element 512 Dots Heat Element Pitch 0.141mm/dot, 7.09Dot/mm (180DPI) Print Width 72±0.2mm Average Resistance 650Ω ± 3% 1) Resistance R25 : 30kΩ ± 5% (At 25℃) Thermistor 2) B Value : 3950K ±...

  • Page 20: Smps Specifications

    SRP-350 3-4 SMPS Specifications 3-4-1 SMPS (Switching Mode Power Supply) Specification Item Description Remark • Typical : 115V / 230V AC Input Voltage • Min : 90V AC • Max : 264V AC Input Current • Max : 1.5A (When 120V), 0.75A (When 230V) •...

  • Page 21: Interface Specifications

    SRP-350 3-5 Interface Specifications 3-5-1 RS-232C Serial Interface 3-5-1(a) Specification Item Description Remark Data Transmission • Serial Synchronization • Asynchronous HandShaking • H/W : DTR / DSR XON: ASC Code 11h (Flow Control) • S/W : XON / XOFF XOFF: ASC Code 13h •...
  • Page 22 SRP-350 3-5-1(c) Cable Connection PRINTER HOST PRINTER HOST SIDE (25P) SIDE (25P) SIDE (25P) SIDE (9P) Figure 3-7 RS-232C Cable Connection 3-5-1(d) Signal Description Pin No. Signal name Direction Function Frame Ground Output Transmit Data Input Receive Data Output Ready To Send...

  • Page 23: Rs-485 Serial Interface

    SRP-350 3-5-1(f) S/W Flow Control When XON/XOFF flow control is selected, the printer transmits XON(ACSII 11h) or XOFF(ASCII 13h) signal through the TXD line. If the Printer is BUSY, the Printer transmits XOFF(ASCII 13h) to host through the TXD line. Then the host recognize that the Printer is BUSY. So, the host does not transmit a data to the Printer. If the Printer is released from BUSY, the Printer transmits XON(ASCII 11h) to host through the TXD line.

  • Page 24: Ieee1284 Parallel Interface

    SRP-350 3-5-2(d) Signal Description Pin No. Signal name Direction Function Frame GND Frame Ground Output Send Data ”H” : SD1 > SD2 , “L” : SD1 < SD2 Output Input Receive Data ”H” : RD1 > RD2 (RD1-RD2 ≥ 0.2V) Input “L”...
  • Page 25 SRP-350 3-5-3(b) Reverse Mode Specification (Nibble / Byte mode) Data transmission from the printer to the host computer. The STATUS data transmission from the printer to the host computer is accomplished in the Nibble or Byte mode. This mode allows data transmission from the asynchronous printer under the control of the host computer.

  • Page 26: Usb Interface

    SRP-350 3-5-4 USB Interface SRP-350 support the USB (Universal Serial Bus) Serial Communication. 3-5-4(a) Specification Item Description Remark Transfer Type • BULK • Bi-direction, Half-Duplex Data Signal • Differential Signal Pair (D+ / D-) • NRZI Format Data Format • Zero Bit Stuffing after 6 ones •...

  • Page 27: Cash Drawer Specifications

    SRP-350 3-6 Cash Drawer Specifications 3-6-1 Cash Drawer Cable Ferrite Core : 1 turn (OP-18E : 18.2 x 12.5 x 25.5) Figure 3-12 Drawer Cable 3-6-2 Cable Connection Pin No. Description Direction Frame GND Cash Drawer Driver Signal #1 Output...

  • Page 28: Hardware

    SRP-350 4. Hardware 4-1 Wiring Diagram [Figure 4-1 Board Wiring Diagram] - 28 - Rev. 3.02...

  • Page 29: Block Diagram

    SRP-350 4-2 Block Diagram [Figure 4-2 Block Diagram] - 29 - Rev. 3.02...

  • Page 30: Special Circuit Descriptions

    SRP-350 4-3 Special Circuit Descriptions 4-3-1 Power Circuit This system is operated under 115Vac or 230Vac. The power circuit supplies the three differential DC voltage sources. [Figure 4-3 Power Block Diagram] VOLTAGE DESCRIPTION (+24VDC) Cash Drawer Solenoid Driving / Step Motor Voltage...

  • Page 31: Reset Circuit

    SRP-350 4-3-2 RESET Circuit Reset signal is signal in order to start-up CPU under Power-on. Reset circuit uses a reset ASM811JEUSF- T(U5). When +5Vdc is fallen under 4.0Vdc by Power-off, reset signal prohibits the system from miss- operating by lowering down to 0V.

  • Page 32: Buzzer And Cash Drawer Circuits

    SRP-350 4-3-3 Buzzer and Cash Drawer Circuits 1) Buzzer Driving Circuit The Buzzer is used to inform several kinds of states which occur under system operating and gives some information to users by controlling the P7.6 of CPU (M30624FGFP) [Figure 4-6 Buzzer Block Diagram] 2) Cash Drawer Driving Circuit The circuit is used for opening cash drawer and driven by the Q4, Q5 (2SD2170).

  • Page 33: I/F Pba Detect Block Diagram

    SRP-350 4-3-4 I/F PBA Detect Block Diagram When the printer is ON, the printer checks what kind of the I/F PBA is installed. After detection, the CPU specify the I/O port properly. The following is the method of I/F PBA detection.

  • Page 34: Rs-232C Communication Block Diagram

    SRP-350 4-3-5 RS-232C Communication Block Diagram The CPU is used for serial communication. And also RS-232C Driver (MAX232), is used to serial communication. Show following block diagram. [Figure 4-8 RS-232C Communication Block Diagram] [Figure 4-9 RS-232C Communication Waveform] - 34 -...

  • Page 35: Rs-485 Communication Block Diagram

    SRP-350 4-3-6 RS-485 Communication Block Diagram The CPU is used for serial communication. And also RS-485 Driver (MAX488), is used to serial communication. Show following block diagram. [Figure 4-10 RS-485 Communication Block Diagram] [Figure 4-11 RS-485 Communication Waveform] - 35 -...

  • Page 36: Parallel Communication Block Diagram

    SRP-350 4-3-7 Parallel Communication Block Diagram The printer support the bidirectional Parallel Interface with Centronics, Nibble, Byte Mode. The Centronics is Forward and the Nibble, Byte are reverse Mode. [Figure 4-10 IEEE1284 Communication Block Diagram] 4-3-8 USB Communication Block Diagram The printer support the USB (Universal Serial Bus).

  • Page 37: Dip Switch Circuit

    SRP-350 4-3-9 DIP Switch Circuit The key board circuit consist of the scan signal of 4 lines and the return signal of 4-line. The CPU sends repeatedly and continuously the scan data R1~R4 through. The DIP S/W information input in the return signal if the specific DIP S/W is ON status during the given time.

  • Page 38: Thermal Printer Head Circuit

    (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 The content of data is same. STB2...

  • Page 39: Disassembly And Assembly

    SRP-350 5. Disassembly and Assembly 5-1 Case-Lower block 1. Remove the three screws. 2. Separate the Bracket-Dip-switch, Case-Lower, Foot-Rubber from the Printer. 1. Remove the connector wires from main PBA and sub Assembly. - 39 - Rev. 3.02...
  • Page 40 SRP-350 1. Remove the three Screws form the BRKT PBA. 2. Separate the BRKT Interface. 3. Remove the two screws. 4. Separate the BRKT Interface from the I/F PBA Assembly. 5. Separate the I/F PBA from the Main PBA. 6. Remove the four screws.

  • Page 41: Case Upper Block

    SRP-350 5-2 Case Upper block 1. Push the Button to open the Cove- Open. 2. Remove the four screws. 3. Separate the Cover-Open. 4. Separate the Cover-Cutter. 5. Remove the screws. 1. Remove the two screws. 2. Lift the Case-Upper in the direction of an arrow during pushing the Push- Button.
  • Page 42 SRP-350 1. Remove the E-Ring. 2. Separate the Spring Tension, the Shaft Hinge and the E-Ring. 3. Remove the E-Ring. 4. Separate the Bushing and the Roller Platen Assembly. 1. Remove the Spring Hook. 2. Remove the two screws. 3. Separate the BRKT Hook.
  • Page 43 SRP-350 1. Remove the three screws. 2. Separate the Fixed-Cutter from the Cover-Housing. 3. Remove the two screws. 4. Separate the Cutter-Blade from Fixed -Cutter. 5. Remove the two screws. 6. Separate the Cover-Plate from the Cover-Housing. - 43 -...

  • Page 44: Frame Block

    SRP-350 5-3 Frame block 1. Pull out the Knob-Cutter and separate 2. Remove the two screws. 3. Separate the BRKT Cover-Cutter and the Auto-Cutter from the Frame Main. 1. Remove the screws. 2. Push the Heat-Sink Assembly in the direction of an arrow and separate it.
  • Page 45 SRP-350 1. Remove the screws. 2. Separate the Plate-ground and BRKT TPH Rear. 3. Remove the two screws. 4. Separate the Heat-Sink and the Spring-TPH. 5. Separate the Connector from the Heat-Sink. 1. Remove the two screws. 2. Separate the Frame-Main from the BRKT PCB.
  • Page 46 SRP-350 1. Remove the screw. And separate the Control-Board from the Frame-Main. 2. Remove the washer slip. 3. Separate the Lever-Release from the Frame-Main. 4. Remove the two screws. 5. Separate the Button Assembly from the Frame-Main. 6. Push the Button. Then, the Button Assembly is separated.

  • Page 47: Adjustments And Maintenance

    SRP-350 6. Adjustments and Maintenance 6-1 Adjustment 6-1-1 Remaining Roll Paper Adjustment This sensor is set to the step3 position at the factory. If you find that there is not or too enough paper remaining on the roll when the near-end sensor is triggered, you can change the setting to the upper or lower position as described below.

  • Page 48: Paper Jam

    SRP-350 6-1-2 Paper Jam If the paper jam occur, the buzzer will beep. If the cover-open can be opened, open the cover-open and remove the paper. If the cover-open can not be opened, follow the below. 1. Open the auto cutter cover with power ON.

  • Page 49: Maintenance

    SRP-350 6-2 Maintenance Paper dust on the heating elements may lower the print quality. In this case, clean the print head as follows: ※ Caution : Turn off the printer power before cleaning. ※ Caution : Note that the thermal head (Thermal Element and Radiation Plate) becomes very hot during normal operation, creating the danger of burn injury.

  • Page 50: Troubleshooting

    SRP-350 7. Troubleshooting This chapter describes the methods for troubleshooting in this Receipt Printer. 7-1 Power Problem - 50 - Rev. 3.02...

  • Page 51: System Problem

    SRP-350 7-2 System Problem - 51 - Rev. 3.02...

  • Page 52: Panel Pba And Sensor Problem

    SRP-350 7-3 Panel PBA and Sensor Problem - 52 - Rev. 3.02...

  • Page 53: Thermal Printer Head And Feed Motor Problem

    SRP-350 7-4 Thermal Printer Head and Feed Motor Problem - 53 - Rev. 3.02...

  • Page 54: Auto Cutter And Drawer Problem

    SRP-350 7-5 Auto Cutter and Drawer Problem - 54 - Rev. 3.02...

  • Page 55: Dip S/W And I/F Pba Select Problem

    SRP-350 7-6 Dip S/W and I/F PBA Select Problem - 55 - Rev. 3.02...

  • Page 56: Rs-232C Serial Communication Problem

    SRP-350 7-7 RS-232C Serial Communication Problem - 56 - Rev. 3.02...

  • Page 57: Rs-485 Serial Communication Problem

    SRP-350 7-8 RS-485 Serial Communication Problem - 57 - Rev. 3.02...

  • Page 58: Ieee-1284 Parallel Communication Problem

    SRP-350 7-9 IEEE-1284 Parallel Communication Problem - 58 - Rev. 3.02...

  • Page 59: Usb Communication Problem

    SRP-350 7-10 USB Communication Problem - 59 - Rev. 3.02...

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