BIXOLON service manual SRP-350/352plusA&C, 3-5-1e H/W Flow Control, 3-5-1f S/W Flow Control

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SRP-350/352plusA&C

3-5-1(e) H/W Flow Control

When DTR/DSR flow control is select, before transmitting a data, the Printer checks whether the host is BUSY or not. If the host is BUSY, the Printer does not transmit a data to the host. If the host is not BUSY, the Printer transmits a data to the Host. The host is the same. Refer to the Interface Part of Chapter 7 (Special Circuit Diagrams).

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. Then the host recognize that the Printer is not BUSY. And the host transmit a data to the Printer.

※Note : Refer to the Operation Manual about XON/XOFF flow control.

3-5-2 IEEE1284 Parallel Interface

Bidirectional parallel interface : in accordance with the IEEE1284 Nibble/Byte mode.

2-5-2(a) Forward Mode Specification (Compatibility mode)

Data transmission from host computer to printer : Centronics compatible

Item		Description	Remark
Data Transmission	• 8-bit Parallel
Synchronization	• External supplied nStrobe signals
HandShaking	• nACK and Busy signals
Signal Level	• TTL compatible
Connector	• Centronics 36P
	Table 3-16	IEEE1284 Specification

3-5-2(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. Data transmission in the Nibble mode are made via the existing control lines in units of for bits (Nibble). In the Byte mode, data transmission in accomplished by making the 8-bit data lines bidirectional. Neither mode can operate at the same time as the compatibility mode, so switching is always required.

Rev. 2.01

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Contents Thermal Printer Rev Service ManualSRP-350/352plusA&C Table of Contents SRP-350/352plusA&C7. Troubleshooting 5. Disassembly and Assembly6. Adjustments and Maintenance 4. Hardware1. Precaution Segment 1-1 Safety Precautions1-2 Servicing Precaution a Remove or reinstall any component or assembly1. 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 1-3 Precaution for Electrostatically Sensitive Devices ESDs1-4 Operational Precautions 2-1-1 AC Adapter Installation 2. Installation and Operation2-1 Installation 2-1-2 Interface Cable Installation2-1-5 Wall Mount Installation SRP-350/352plusA&C 2-2-2 Setting the DIP switch RS-232C Serial Interface 2-2 Operation2-2-1 Setting the DIP switches 2-2-3 Setting the DIP switch IEEE1284 Parallel, USB Interface ※ Auto Cutter Enable / Disable selection2-2-4 Hexadecimal Dumping 2-2-5 The self Test ModeFigure 3-13 The Self-Test Sheet 2-2-6 Setting the Memory Switches SRP-350/352plusA&C 3-1-1 Printer Dimensions mm 3. Product Specifications3-1 Appearance 3-1-2 AC Adapter Dimensions mm3-1-3 Feature Locations-SRP-350/352plusA/C TYPE SRP-350/352plusCOP IEEE1284 Parallel Communication 3-2 General SpecificationsSRP-350/352plusCOS RS-232 Serial Communication SRP-350/352plusCO USB Communication3-3-2 Character Specification 3-3 Thermal Printer Specifications3-3-1 Printer Specification Description※ Note 3-3-3 Paper Specification3-3-4 Reliability and Environment Specification PD 160R3-3-6 TPH Thermal Printer Head Specification 1 180dpi 3-3-5 Printable Area3-3-7 Other Component Specification 3-4-2 SMPS Output Connector 3-4 SMPS Specifications3-4-1 SMPS Switching Mode Power Supply Specification 3-5-1b RS-232C I/F Cable 3-5 Interface Specifications3-5-1 RS-232C Serial Interface 3-5-1a Specification Printer 3-5-1d Signal Description3-5-1c Cable Connection Host3-5-1f S/W Flow Control 2-5-2a Forward Mode Specification Compatibility mode3-5-1e H/W Flow Control ※ Note Refer to the Operation Manual about XON/XOFF flow controlnAck 3-5-2c Signal Specification Compatibility/Nibble/Byte mode3-5-2c IEEE1284 I/F Cable Busy3-5-3 USB2.0 Interface 3-5-3a Specification3-5-3b Signal Description 3-5-3c Cable3-5-4d Construction ※ Note Minimum conductor construction must be stranded tinned copper Series A ConnectorsSeries B Connectors From the3-6-1 Drawer Cable 3-6 Cash Drawer Specifications※ Note +24V is always output through pin 4 during power on 3-6-2 Cable ConnectionFigure 4-1 Board Wiring Diagram 4-1 Wiring Diagram4. Hardware 4-2 Block Diagram Figure 4-2 Block Diagram4 CPU, Flesh, SRAM, Reset Voltage +3.3V 4-3 Special Circuit Descriptions4-3-1 Power Circuit VOLTAGEFigure 4-4 Reset Block Diagram Figure 4-5 Reset Waveform 4-3-2 RESET CircuitReset signal is signal in order to start-up CPU under Power-on ASM811 REUSF-T4-3-3 Buzzer and Cash Drawer Circuits 1 Buzzer Driving Circuit 2 Cash Drawer Driving CircuitUPD70F3107 4-3-4 I/F PBA Detect Block Diagram4-3-5 RS-232C Communication Block Diagram 4-3-6 Parallel Communication Block Diagram 4-3-7 USB Communication Block Diagram4-3-8 DIP Switch Circuit STROBE1 DATA#1,2LATCH 4-3-9 Thermal Printer Head Circuit1 Scrw 2 Brkt Dip Switch 3 Case Lower 5. Disassembly and Assembly5-1 Case lower block 4 Foot Rubber5 PCB Serial Parallel 8 Screw 1 Screw 2 Brkt PCB6 Main PCB Screw1.Remove the two screws 5-2 Case Upper block1.Push the button to open the Cove Open. 2.Remove the four screws 3.Remove the three screws. 4.Separate the Manual cutter from4 Brkt-Hook 3 Screw Roller Platen Assembly1 Spring Hook 1.Remove the E-Ring. 2.Separate the Spring tension, the4 Screw 5-3 Frame block3 Cover Housing 1 Screw1.Remove the screw 4 Screw 7 ConnectorSpring TPH 5.Separate the Connector from the Heat-sink 2 Heatsink Assy 1 ScrewWasher 1 Screw 2 Frame Main 3 Brkt PCB 4 Power SwitchFrame Main Slip6-1-1 Remaining Roll Paper Adjustment 6. Adjustments and Maintenance6-1 Adjustment 6-1-2 Paper Jam 6-2 Maintenance ※ Caution Turn off the printer power before cleaningOk? On SMPS 7. Troubleshooting7-1 Power Problem 7-2 System Problem 7-3 Panel PBA and Sensor Problem 7-4 Thermal Printer Head and Feed Motor Problem 7-5 Auto Cutter and Drawer Problem Select Ok? 7-6 Dip S/W and I/F PBA Select ProblemInput Ok? 7-7 RS-232C Serial Communication Problem 7-8 IEEE-1284 Parallel Communication Problem Failure? 7-9 USB2.0 Communication ProblemMain PBA I/F Reverse Mode