BIXOLON SRP-270 service manual Precaution Segment, Safety Precautions

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SRP-270

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.

2.When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including nonmetallic control knobs and compartment covers.

3.Make sure that there are no cabinet openings through which people - particularly children - might insert fingers and contact dangerous voltages. Such openings include excessively wide cabinet ventilation slots and improperly fitted covers and drawers.

4.Leakage Current Hot Check:

WARING: Do not use an isolation transformer during this test.

Use a leakage-current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Applications), and Underwriters Laboratories (UL Publications UL1410, 59.7)

With the unit completely reassembled, plug the AC line cord directly into a 100VAC or 240VAC outlet of the Adaptor.

With the unit’s AC switch first in the ON position and then OFF, measure the current between a

known Earth ground (metal water pipe, conduit, etc.) and all exposed metal part, including: metal cabinet, frame, and screw-heads and printer. The current measure should not exceed 0.1 milliamp. Reverse the power-plug prong in the AC outlet and repeat the test.

5.Design Alteration Warning:

Never alter or add to the mechanical or electrical design of the Receipt Printer. Unauthorized alterations might create a safety hazard. Also any design changes or additions will void the manufacture’s warranty.

6.Components, parts and wiring that appear to have overhead or that are otherwise damaged should be replaced with parts that meet the original specifications. Always determine the cause of damaged or overheating and correct any potential hazards.

7.Observe the original lead dress, especially near the following areas: sharp edges, and especially the AC and high voltage supplies. Always inspect for pinched, out-of-place, or frayed wiring.

Do not change the spacing between components and the printed circuit board. Check the AC power cord for damage. Make sure that leads and components do not touch thermally hot parts.

8.Product Safety Notice:

Some electrical and mechanical parts have special safety-related characteristics, which might not be obvious from visual inspection. These safety features and the protection they give might be lost if the replacement component differs from the original-even if the replacement is rated for higher voltage, wattage, etc.

Components that are critical for safety are indicated in the circuit diagram by shading,

( )or ( ). Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards.

Rev. 3.02

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Contents SRP-270 SRP-270 Alignment and Adjustments SRP-270 Overview of this Receipt Printer About this Manual Precaution symbolsAbout CopyrightPrecaution Segment Safety PrecautionsWaring Do not use an isolation transformer during this test Servicing Precaution Precaution for Electrostatically Sensitive Devices ESDs AC Adapter Installation Installation and OperationInstallation Interface Cable 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 Self Test Mode Hexadecimal DumpingSerial Self-Test Sheet Parallel Self-Test Sheet SRP-270 AC Adapter Dimensions mm Product SpecificationsPrinter Dimensions mm AppearanceFeature Locations Feature LocationPrinter Mecha Specification General SpecificationsPrinter Mecha Specifications USBPrinter SMP-710/SMP-710N Pin Description Character SpecificationAscii GNDFeed & Carriage Motor Specification Printer Head SpecificationPrinter Head Thermistor Specification Auto cutter specificationOther Component Specification Smps SpecificationsRibbon Cassette Specification Smps Switching Mode Power Supply SpecificationInterface Specifications 1 RS-232C Serial Interface 1a Specification1d Signal Description 1c Cable Connection1e H/W Flow Control 2c Cable Connection 2 RS-485 Serial Interface 2a Specification1f S/W Flow Control Printer Host Side2f S/W Flow Control 2d Signal Description3a Forward Mode Specification Compatibility mode IEEE1284 Parallel Interface3c Signal Specification Compatibility/Nibble/Byte mode 3c IEEE1284 I/F Cable4 USB2.0 Interface 4a Specification4b Signal Description 4c USB I/F CableCash Drawer Cable Cash Drawer Specifications※ Note +24V is always output through pin 4 during power on Cable ConnectionWiring Diagram HardwareBlock Diagram Block DiagramDrawer Driving and Feed, Auto Cutter Motor Voltage +24Vdc Power CircuitSpecial Circuit Descriptions Logic IC Driving Voltage +5VReset Circuit Reset Block DiagramCash Drawer Block Diagram Cash Drawer Circuits4 I/F PBA Detect Block Diagram PBA DIPC1 DIPC2 DIPC35 RS-232C Communication Block Diagram RS-232C Communication Block Diagram6 RS-485 Communication Block Diagram 10 RS-485 Communication Block DiagramParallel Communication Block Diagram USB Communication Block DiagramDIP Switch Circuit 12 DIP Switch Block DiagramDisassembly and Assembly General Precautions on DisassemblyPlate Bottom Cover Assy SRP-270D Type Cover Assy SRP-270A & SRP-270C TypeCase Upper Assy SRP-270A & SRP-270C Type Case Upper Assy SRP-270D Type Printer Assy SRP-270A & SRP-270C TypePrinter Assy SRP-270D Type Auto Cutter AssyMain PCB Interface Board AssyAlignment and Adjustments Printer AdjustmentAdjustment of Head gap Troubleshooting Ieee 1284 Problem USB ProblemSpecifications Printing specificationsAppendix Spec of SMP-710/710N Character specifications ANKPaper specifications Ribbon Cassette specifications Main Unit specifications ReliabilityMcbf Electrical specifications Mechanisms specificationsPrinciple of Movement SRP-270 SRP-270 SRP-270 Operation of Color change Description of Timing chart.1 Circuit board block diagram Precautions on Printer Handling Handling the PrinterPaper Setting Procedures Insertion/Removal Remove method by manual Ribbon Cassette Installation Maintenance CleaningInspection Lubricants and Adhesive Application Tools, Lubricants and Adhesives RepairRepair Guidelines FPCRev SRP-270 SRP-270 Phenomenon Assignment Connector Pin Taiwan Tack coWBH DisassemblyAssembly WPHSub-assemblies Check Point①SHAFT Pulley ②SWITCH Lever③WIRE Assy ②LEVER Tension③GEAR Knob ①BRACKET P/F R②GEAR PF Idle ④GEAR Knob IdleMain-assemblies ③WASHER Belt Guide ①GEAR Tape UP②GEAR TU Pulley ⑤BRACKET PF L③MANUAL Cutter ①SUB PCB Assy②SCREW Tapping M2*3, 2EA ⑤PLATEN Paper Guide③TAPE Insulation ①FRAME Main C/K ASSY-4②SERIAL NO. TAG ④LEVER Color Change②GEAR Reduction B ⑧FPC Connector①GEAR Reduction a ③RIBBON Feeder Assy⑤RIBBON Frame ⑥SPRING Ribbon Frame ①AD Lever ②SHAFT Head Guide ③SHAFT Head Carriage⑤HEAD Print ⑧HEAD Cover Assy①RIBBON Frame ②SPRING Ribbon Frame Adjustment