BIXOLON SRP-270 Disassembly and Assembly, General Precautions on Disassembly, Plate Bottom

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SRP-270

5. Disassembly and Assembly

5-1 General Precautions on Disassembly

This chapter describes the Disassembly and Reassembly procedures for the Printer of SRP-270 Series. This Printer contains electronically sensitive device. Use caution when handling any component.

Whenever servicing the machine, you must perform as follows:

1.Disconnect the DC power jack of Adapter from the Printer before Disassembling.

2.Use a flat and clean surface.

3.Replace only with authorized components.

4.Do not force to remove plastic-material components.

5.Make sure all components are in their proper position.

5-2 Plate Bottom

1. Remove four screws securing the Plate Bottom.	3. Unplug Auto Cutter wire and FPC Cable from
Separate the Plate Bottom from the Lower Case.	the Main PCB.

2.If you want to remove the PCB Cover, remove screw securing, as shown below.

Rev. 3.02

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Contents SRP-270 SRP-270 Alignment and Adjustments SRP-270 Copyright About this Manual Precaution symbolsAbout Overview of this Receipt PrinterPrecaution Segment Safety PrecautionsWaring Do not use an isolation transformer during this test Servicing Precaution Precaution for Electrostatically Sensitive Devices ESDs Interface Cable Installation Installation and OperationInstallation AC Adapter InstallationPaper Roll Installation Setting the DIP switches Setting the DIP switch RS-232C Serial InterfaceOperation Setting the DIP switch IEEE1284 Parallel, USB Interface YES OFFMode Hexadecimal Dumping Self Test ModeSerial Self-Test Sheet Parallel Self-Test Sheet SRP-270 Appearance Product SpecificationsPrinter Dimensions mm AC Adapter Dimensions mmFeature Location Feature LocationsUSB General SpecificationsPrinter Mecha Specifications Printer Mecha SpecificationGND Character SpecificationAscii Printer SMP-710/SMP-710N Pin DescriptionAuto cutter specification Printer Head SpecificationPrinter Head Thermistor Specification Feed & Carriage Motor SpecificationSmps Switching Mode Power Supply Specification Smps SpecificationsRibbon Cassette Specification Other Component Specification1 RS-232C Serial Interface 1a Specification Interface Specifications1d Signal Description 1c Cable Connection1e H/W Flow Control Printer Host Side 2 RS-485 Serial Interface 2a Specification1f S/W Flow Control 2c Cable ConnectionIEEE1284 Parallel Interface 2d Signal Description3a Forward Mode Specification Compatibility mode 2f S/W Flow Control3c IEEE1284 I/F Cable 3c Signal Specification Compatibility/Nibble/Byte mode4c USB I/F Cable 4a Specification4b Signal Description 4 USB2.0 InterfaceCable Connection Cash Drawer Specifications※ Note +24V is always output through pin 4 during power on Cash Drawer CableHardware Wiring DiagramBlock Diagram Block DiagramLogic IC Driving Voltage +5V Power CircuitSpecial Circuit Descriptions Drawer Driving and Feed, Auto Cutter Motor Voltage +24VdcReset Block Diagram Reset CircuitCash Drawer Circuits Cash Drawer Block DiagramPBA DIPC1 DIPC2 DIPC3 4 I/F PBA Detect Block DiagramRS-232C Communication Block Diagram 5 RS-232C Communication Block Diagram10 RS-485 Communication Block Diagram 6 RS-485 Communication Block DiagramUSB Communication Block Diagram Parallel Communication Block Diagram12 DIP Switch Block Diagram DIP Switch CircuitDisassembly and Assembly General Precautions on DisassemblyPlate Bottom Cover Assy SRP-270A & SRP-270C Type Cover Assy SRP-270D TypeCase Upper Assy SRP-270A & SRP-270C Type Printer Assy SRP-270A & SRP-270C Type Case Upper Assy SRP-270D TypeAuto Cutter Assy Printer Assy SRP-270D TypeInterface Board Assy Main PCBAlignment and Adjustments Printer AdjustmentAdjustment of Head gap Troubleshooting USB Problem Ieee 1284 ProblemSpecifications Printing specificationsAppendix Spec of SMP-710/710N ANK Character specificationsPaper specifications Ribbon Cassette specifications Main Unit specifications ReliabilityMcbf Mechanisms specifications Electrical specificationsPrinciple of Movement SRP-270 SRP-270 SRP-270 Operation of Color change Description of Timing chart.1 Circuit board block diagram Handling the Printer Precautions on Printer HandlingPaper Setting Procedures Insertion/Removal Remove method by manual Ribbon Cassette Installation Maintenance CleaningInspection Lubricants and Adhesive Application Repair Tools, Lubricants and AdhesivesFPC Repair GuidelinesRev SRP-270 SRP-270 Phenomenon Taiwan Tack co Assignment Connector PinWPH DisassemblyAssembly WBHCheck Point Sub-assemblies②LEVER Tension ②SWITCH Lever③WIRE Assy ①SHAFT Pulley④GEAR Knob Idle ①BRACKET P/F R②GEAR PF Idle ③GEAR KnobMain-assemblies ⑤BRACKET PF L ①GEAR Tape UP②GEAR TU Pulley ③WASHER Belt Guide⑤PLATEN Paper Guide ①SUB PCB Assy②SCREW Tapping M2*3, 2EA ③MANUAL Cutter④LEVER Color Change ①FRAME Main C/K ASSY-4②SERIAL NO. TAG ③TAPE Insulation③RIBBON Feeder Assy ⑧FPC Connector①GEAR Reduction a ②GEAR Reduction B⑧HEAD Cover Assy ①AD Lever ②SHAFT Head Guide ③SHAFT Head Carriage⑤HEAD Print ⑤RIBBON Frame ⑥SPRING Ribbon Frame①RIBBON Frame ②SPRING Ribbon Frame Adjustment