BIXOLON service manual 7-7 RS-232C Serial Communication Problem, SRP-350/352plusA&C

Page 57
7-7 RS-232C Serial Communication Problem

SRP-350/352plusA&C

7-7 RS-232C Serial Communication Problem

RS-232C

Problem

Communication Y

Failure?

N

1. Check the connection of the RS-232C Connector and Other side

2.Check the I/F Cable whether it is open or short

3.Check the Txd, Rxd Pin on CPU

4.Check the MAX232 Driving Chip and

related Circuit on I/F PBA

5.Check whether Signal is affected by the Cable Noise

H/WN

Handshake

Y

1.Check the connection of the H/W handshaking Line and Other side (DTR/DSR)

2.Check the I/F Cable whether it is open or short

3.Confirm the H/W handshaking Protocol

End

Rev. 2.01

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Contents Service Manual SRP-350/352plusA&CThermal Printer Rev SRP-350/352plusA&C Table of Contents6. Adjustments and Maintenance 5. Disassembly and Assembly7. Troubleshooting 4. Hardware1-1 Safety Precautions 1. Precaution Segmenta Remove or reinstall any component or assembly 1-2 Servicing Precaution1-3 Precaution for Electrostatically Sensitive Devices ESDs 1-4 Operational Precautions1. 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 2-1 Installation 2. Installation and Operation2-1-1 AC Adapter Installation 2-1-2 Interface Cable Installation2-1-5 Wall Mount Installation SRP-350/352plusA&C 2-2 Operation 2-2-1 Setting the DIP switches2-2-2 Setting the DIP switch RS-232C Serial Interface ※ Auto Cutter Enable / Disable selection 2-2-3 Setting the DIP switch IEEE1284 Parallel, USB Interface2-2-5 The self Test Mode 2-2-4 Hexadecimal DumpingFigure 3-13 The Self-Test Sheet 2-2-6 Setting the Memory Switches SRP-350/352plusA&C 3-1 Appearance 3. Product Specifications3-1-1 Printer Dimensions mm 3-1-2 AC Adapter Dimensions mm3-1-3 Feature Locations-SRP-350/352plusA/C TYPE SRP-350/352plusCOS RS-232 Serial Communication 3-2 General SpecificationsSRP-350/352plusCOP IEEE1284 Parallel Communication SRP-350/352plusCO USB Communication3-3-1 Printer Specification 3-3 Thermal Printer Specifications3-3-2 Character Specification Description3-3-4 Reliability and Environment Specification 3-3-3 Paper Specification※ Note PD 160R3-3-5 Printable Area 3-3-6 TPH Thermal Printer Head Specification 1 180dpi3-3-7 Other Component Specification 3-4 SMPS Specifications 3-4-1 SMPS Switching Mode Power Supply Specification3-4-2 SMPS Output Connector 3-5 Interface Specifications 3-5-1 RS-232C Serial Interface 3-5-1a Specification3-5-1b RS-232C I/F Cable 3-5-1c Cable Connection 3-5-1d Signal DescriptionPrinter Host3-5-1e H/W Flow Control 2-5-2a Forward Mode Specification Compatibility mode3-5-1f S/W Flow Control ※ Note Refer to the Operation Manual about XON/XOFF flow control3-5-2c IEEE1284 I/F Cable 3-5-2c Signal Specification Compatibility/Nibble/Byte modenAck Busy3-5-3b Signal Description 3-5-3a Specification3-5-3 USB2.0 Interface 3-5-3c Cable3-5-4d Construction Series B Connectors Series A Connectors※ Note Minimum conductor construction must be stranded tinned copper From the※ Note +24V is always output through pin 4 during power on 3-6 Cash Drawer Specifications3-6-1 Drawer Cable 3-6-2 Cable Connection4-1 Wiring Diagram 4. HardwareFigure 4-1 Board Wiring Diagram Figure 4-2 Block Diagram 4-2 Block Diagram4-3-1 Power Circuit 4-3 Special Circuit Descriptions4 CPU, Flesh, SRAM, Reset Voltage +3.3V VOLTAGEReset signal is signal in order to start-up CPU under Power-on 4-3-2 RESET CircuitFigure 4-4 Reset Block Diagram Figure 4-5 Reset Waveform ASM811 REUSF-T2 Cash Drawer Driving Circuit 4-3-3 Buzzer and Cash Drawer Circuits 1 Buzzer Driving Circuit4-3-4 I/F PBA Detect Block Diagram 4-3-5 RS-232C Communication Block DiagramUPD70F3107 4-3-7 USB Communication Block Diagram 4-3-6 Parallel Communication Block Diagram4-3-8 DIP Switch Circuit LATCH DATA#1,2STROBE1 4-3-9 Thermal Printer Head Circuit5-1 Case lower block 5. Disassembly and Assembly1 Scrw 2 Brkt Dip Switch 3 Case Lower 4 Foot Rubber6 Main PCB 8 Screw 1 Screw 2 Brkt PCB5 PCB Serial Parallel Screw1.Push the button to open the Cove Open. 2.Remove the four screws 5-2 Case Upper block1.Remove the two screws 3.Remove the three screws. 4.Separate the Manual cutter from1 Spring Hook Roller Platen Assembly4 Brkt-Hook 3 Screw 1.Remove the E-Ring. 2.Separate the Spring tension, the3 Cover Housing 5-3 Frame block4 Screw 1 ScrewSpring TPH 5.Separate the Connector from the Heat-sink 4 Screw 7 Connector1.Remove the screw 2 Heatsink Assy 1 ScrewFrame Main 1 Screw 2 Frame Main 3 Brkt PCB 4 Power SwitchWasher Slip6. Adjustments and Maintenance 6-1 Adjustment6-1-1 Remaining Roll Paper Adjustment 6-1-2 Paper Jam ※ Caution Turn off the printer power before cleaning 6-2 Maintenance7. Troubleshooting 7-1 Power ProblemOk? On SMPS 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 7-6 Dip S/W and I/F PBA Select Problem Input Ok?Select Ok? 7-7 RS-232C Serial Communication Problem 7-8 IEEE-1284 Parallel Communication Problem Main PBA I/F 7-9 USB2.0 Communication ProblemFailure? Reverse Mode
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