The Speaker Company TTP 248M service manual Troubleshooting

Page 68

TTP-248M Bar Code Printer

Service Manual

5. TROUBLESHOOTING

5.1 Troubleshooting

The following guide lists the most common problems that may be encountered when operating this bar code printer. If the printer still does not function after all suggested solutions have been invoked, please contact the Customer Service Department of your purchased reseller or distributor for assistance.

Phenomenon

 

Cause of Errors

 

Recovery Procedure

 

 

 

 

 

 

1.

Running out of ribbon

1.

Supply a new ribbon roll.

 

2.

The ribbon is installed

2.

Please refer to the steps in

No ribbon

 

incorrectly.

 

user’s manual to reinstall

3.

The ribbon sensor is not

 

the ribbon.

 

 

 

 

been well calibrated.

3.

Please calibrate the ribbon

 

 

 

 

sensor

 

1.

Running out of label

1.

Supply a new label roll.

 

2.

The label is installed

2.

Please refer to the steps in

No paper

 

incorrectly.

 

user’s manual to reinstall

3.

The moveable gap/black

 

the label roll.

 

 

 

 

mark sensor is not placed

3.

Please move the sensor to

 

 

in the proper location.

 

the proper location.

 

1.

Dirt is accumulated on the

1.

Please refer to the steps in

 

 

print head.

 

user’s manual to clear the

 

2.

The density setting is not

 

print head.

 

 

set properly

2.

Adjust the print density and

Poor printing quality

3.

Ribbon and media are

 

speed.

 

 

incompatible.

3.

Change proper ribbon or

 

4.

The pressure of print head

 

proper label roll.

 

 

is not set properly

4.

Adjust the print head

 

 

 

 

pressure adjustment knob.

 

1.

The power cord is not

1.

Please check whether the

 

 

properly connected.

 

power cord is well

 

2.

The voltage setting of

 

connected between printer

Power indicator does

power supply in the rear of

 

and outlet.

not illuminate

 

printer is set incorrectly.

2.

Please set the voltage

 

 

 

 

setting of power supply at

 

 

 

 

the rear of printer to the

 

 

 

 

proper voltage.

Paper jam

1.

The label size is not set

1.

a. Reset the label size.

 

properly.

 

b. Re-calibrate the

 

 

 

65

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Contents TTP 248M Table of Content TTP-248M Bar Code PrinterTTP-248M Bar Code Printer Foundamentals about the System Printer OverviewTTP-248M Bar Code Printer Pinter Specification SpecificationCommunication Interface Available Bar Codes Text Specification File Head of Font Fixed 32bytes BF3~4 VF3~4 Specification Types of PaperTTP-248M Bar Code Printer Ribbon Specification Circuit Description MCUMCU MCU PIN Description Page Page Page Page Page Page Page Page TTP-248M Bar Code Printer Reset Circuit Reset CircuitTTP-248M Bar Code Printer Memory System Etro N TechDecoder Circuits Memory Address MapUse by CPU Area Internal I/O Sdram TTP-248M Bar Code Printer Firmware Address Map TTP-248M Bar Code Printer Power Down Sensor VCCTTP-248M Bar Code Printer Print Head GNDMotor System Circuit Stepping Motor PatternTTP-248M Bar Code Printer Sensor Circuits Ribbon Near End Sensor10 Black mark/ Gap Sensor Circuit Peel-off Sensor 11 Peel-off Sensor Circuit Case Sensor Serial Port Circuit GND VDDParallel Port Circuit VDDTTP-248M Bar Code Printer Cutter Drive System 17 Cutter Drive CircuitTTP-248M Bar Code Printer PIN Switch Circuits Connector Circuits21 Memory Card Connector 23 Stepping Motor Connector TTP-248M Bar Code Printer Optional Items Circuits Optional Item---BuzzerMachanism Remove the Covers and LCD PanelLoosen 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 TroubleshootingCalibrate Gap/Black Mark Sensor Flash / DramDram 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