The Speaker Company TTP 248M service manual TTP-248M Bar Code Printer Pinter Specification

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TTP-248M Bar Code Printer

Service Manual

1.2 Pinter Specification

Item

Specification

 

 

Printing Mode

Thermal transfer and direct thermal

 

 

Resolution

203 DPI

 

 

Max. Print Length

999 mm

 

 

Max. Print Width

104 mm

 

 

Print Speed

Selectable speed of 4,6,8 inch per second

 

 

 

Environment

 

 

Temperature

5 ~40 OC

Humidity

30 ~ 85 %

 

 

Temperature

-10 ~ 60 OC

Humidity

20 ~ 95 %

 

 

Ventilation

Free air environment

 

 

Sensors

Label gap (256-level), ribbon end (16-level), black

mark (256-level), carriage open, ribbon near end

 

 

 

Memory

Flash Memory 2MB, DRAM 4MB and optional Flash

Memory 8MB

 

 

 

Interface

RS-232C 56000bps ( Max.), Centronics

 

 

Cutter

116 mm width (Paper thickness up to 0.28 mm)

 

 

 

100 VAC to 120 VAC, 200 VAC to 240 VAC

 

Switching mode power supply.

 

Input Frequency : 50Hz to 60Hz

 

Input Current : 4.0 Amps at max.

Power

Inrush Current :

 

40 Amps max. (cold start) at 115 VAC input line

 

voltage.

 

80 Amps max. (cold start) at 230 VAC input line

 

voltage.

 

 

 

Electrical

 

 

CPU

HITACH SH 7709A

 

 

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Contents TTP 248M TTP-248M Bar Code Printer Table of ContentTTP-248M Bar Code Printer Printer Overview Foundamentals about the SystemSpecification TTP-248M Bar Code Printer Pinter SpecificationCommunication Interface Available Bar Codes Text Specification File Head of Font Fixed 32bytes BF3~4 VF3~4 Types of Paper SpecificationTTP-248M Bar Code Printer Ribbon Specification MCU Circuit DescriptionMCU MCU PIN Description Page Page Page Page Page Page Page Page Reset Circuit TTP-248M Bar Code Printer Reset CircuitEtro N Tech TTP-248M Bar Code Printer Memory SystemMemory Address Map Decoder CircuitsUse by CPU Area Internal I/O Sdram TTP-248M Bar Code Printer Firmware Address Map VCC TTP-248M Bar Code Printer Power Down SensorGND TTP-248M Bar Code Printer Print HeadStepping Motor Pattern Motor System CircuitRibbon Near End Sensor TTP-248M Bar Code Printer Sensor Circuits10 Black mark/ Gap Sensor Circuit Peel-off Sensor 11 Peel-off Sensor Circuit Case Sensor GND VDD Serial Port CircuitVDD Parallel Port Circuit17 Cutter Drive Circuit TTP-248M Bar Code Printer Cutter Drive SystemConnector Circuits TTP-248M Bar Code Printer PIN Switch Circuits21 Memory Card Connector 23 Stepping Motor Connector Optional Item---Buzzer TTP-248M Bar Code Printer Optional Items CircuitsRemove the Covers and LCD Panel MachanismLoosen the three screws on Top Left Side Cover Screw LCD Panel Lower Front Cover TTP-248M Bar Code Printer Replacing the Mainboard TTP-248M Bar Code Printer Replacing the Power Supply Unit Belt Ring of Label Rewind Spindle Remove the E-ring of pulley. And then, remove the pulley TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Ribbon Supply Spindle TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Label Supply Spindle TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Label Rewind Spindle TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Platen Remove the Platen and Left Shaft Bearing TTP-248M Bar Code Printer Replacing Motor TTP-248M Bar Code Printer TTP-248M Bar Code Printer Replacing Print Head Remove the 2 screws these are on the TPH switch plate Remove A.B.C.D in order Loosen M4 screw, knob E and F TTP-248M Bar Code Printer Replacing Gap/Black Mark Sensor TTP-248M Bar Code Printer Reassemble in the reverse procedures after replacing Curly plastic pipe Screws Troubleshooting TroubleshootingFlash / Dram Calibrate Gap/Black Mark SensorDram Clear Diagnosis Operation ProcedureTTP-248M Bar Code Printer Self-test TTP-248M Bar Code Printer Cleaning Print Head Update History No.35, Sec , Ligong 1st Rd., Wujie Township