The Speaker Company TTP 248M service manual Calibrate Gap/Black Mark Sensor, Flash / Dram

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TTP-248M Bar Code Printer

Service Manual

 

2.

Labels may be stuck in

 

gap/black mark sensor.

 

 

side print mechanism.

2.

Remove the stuck label.

Carriage open

The printer carriage is open.

Please close the print

carriage.

 

 

 

 

 

 

Memory full

The space of FLASH/DRAM

Delete unused files in the

( FLASH / DRAM )

is full.

FLASH/DRAM.

 

1.

The serial port setting is

1.

Please reset the serial port

 

 

not consistent between

 

setting.

No printout printing

 

host and printer.

2.

Please replace the cable

through serial port

2. The serial port cable pin

 

with pin to pin assignment.

 

 

configuration is not pin to

 

 

 

 

pin assignment.

 

 

 

1.

Out of paper or out of

1.

(1) Please check the feed

 

 

ribbon.

 

path of label or ribbon.

 

2.

The gap/black mark

 

(2) Please supply a new

 

 

sensor or ribbon sensor

 

label roll or ribbon roll.

 

 

are not calibrated.

2.

(1) Calibrate gap/black

 

3.

The ribbon rewind spindle

 

mark sensor.

On-Line indicator is

 

paper core is not been

 

(2) Calibrate ribbon sensor.

off, error indicator is

 

installed.

3.

Install a paper core onto

on

4.

The diameter of rewind

 

the ribbon rewind spindle.

 

 

spindle paper core is less

 

(The diameter of the paper

 

 

than 34 mm.

 

core should be larger than

 

 

 

 

34 mm)

 

 

 

4.

Please change the paper

 

 

 

 

core which diameter is

 

 

 

 

larger than 34 mm.

5.2Calibrate Gap/Black Mark Sensor

1.Gap/Black Mark Sensor Calibration

This utility is used to calibrate the sensitivity of the gap/black mark sensor. The gap/black mark sensor should be calibrated whenever changing the label media or executing printer initialization.

Please follow the steps below to calibrate the gap sensor.

a.Install the ribbon and label roll as the above-mentioned procedures, and engage the carriage release lever.

b.Switch off printer power.

c.Press PAUSE key and then switching on printer power. Release the PAUSE

“GAP/BLINE sensor calibrating….” Message is shown on the LCD display.

The printer will calibrate the gap/black mark sensor automatically.

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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 SensorDiagnosis Operation Procedure TTP-248M Bar Code Printer Self-testDram Clear TTP-248M Bar Code Printer Cleaning Print Head Update History No.35, Sec , Ligong 1st Rd., Wujie Township