Toshiba B-570 manual How To Calculate Theshold Fine Adjustment Value, Case

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6. DIAG. TEST OPERATION

EM18-33010A (Revision Date: Jan. 14 ‘99)

6.3 PARAMETER SETTING MODE

■How To Calculate Theshold Fine Adjustment Value

If the following cases occurred, threshold value for the paper sensors should be fine adjusted after referring to the next page.

Case 1:

When using tag paper, the black mark and the print area are distinguished from each other by the 1.5V or more difference of sensor output voltage. If a low-sensitive sensor is installed in the printer, it may not detect 1.5V or more difference between the black mark and the print area. This may cause the printer to feed over one and a half tags, and then stop with “PAPER JAM” displayed.

Case 2:

The presence and lack of label are distinguished from each other by the reflective sensor voltage. When the voltage is more than 1.5V, it is regarded as the presence of paper. And less than 1.5V is regarded as the paper end. If a low-sensitive-sensor is used, 1.5V or more may not be detected at the backing paper since the reflectance of backing paper is low. In such case, more than 5mm-long gap is regarded as the no paper. And trying to print or feed the label when the sensor stops at the gap results in a NO PAPER error. This problem tends to occur when using labels with thin backing paper.

Case 3:

If the reflective sensor’s output voltage when detecting no paper is 1.5V or more, the sensor does not recognize the actual paper end during printing. Accordingly, the printer continues to print despite of the paper end. This problem may occur on printers of which the resistors on the CPU PCB have been changed according to the Technical Information #SVM7A1010/1 (issued on April 16, 1997).

Case 4:

When using perforated fanfold labels, the transmissive sensor mistakes the perforation on the gap for a print area, resulting in a PAPER JAM error.

Case 5:

When using such a particular label stock that a black mark is printed on every two or three gaps, the sensor detects three different voltages at the label, unmarked gap and black mark, respectively. The sensor cannot distinguish the unmarked gap from the black mark, so the printer stops with displaying “PAPER JAM”.

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Contents Series Table of Contents Procedure ChecksMajor Unit Replacement Disconnect power cord before replacing important partsReplacing the PS UNIT, I/F PC Board and CPU PC Board An oscilloscope Turn the power off and mount the left side Cover and top coverReplacing the Stepping Motor Replacing the Ribbon Motors Replacing the TAKE-UP MotorReplacing the Solenoid Head Up Link Solenoid Spring Pin Replacing the Print Head Old type print headAdjusting the print head position New type print head Replacing the Platen and Feed Roller Replacing the Platen and Feed Roller Replacing the Paper Sensor Replacing the Ribbon Back Tension BlockReplacing the Pinch Roller Shaft ASS’Y Adjustment Correcting Skew Printing Installation Procedure for the Optional Equipment High Speed PC Interface Board B-4800-PC-QMInstallation Procedure for the Optional Equipment Cutter Module B-4205-QM EM18-33010A SVO7A1003 Nov ’97 Adjusting the Cutter Guide Plates Mount the cutter cover with the two screwsRemoved Parts ’ty/Unit Front plate Memory Module Expansion memory and drawing sizeFanfold Paper Guide Module B-4905-FF-QM Cutter Drive Cutter Mode Mechanism DescriptionHarness Wiring Dirty print head Clean the print head Toshiba TECFasten the head lever completely Refer to page 2-3 to adjust Sensor Setting Mode Parameter Setting ModeTest Print Mode RAM Clear ModeDIAG. Test Operation Outline of the DIAG. Test OperationL I N E Press the Pause key. See NoteU S E B B O N Self Test ModeMaintenance Counter Printing I N T E N a N C E C O U N T E RSample Print Print Condition ∙ Preset count ∙ Print speed Parameters TransAutomatic Diagnostic Printing B B O N T R a N S M I S S I V EPress the Pause key On .2.3 Head Broken Element Check PROGRAM/MASK ROM Check Print Condition ∙ Preset count ∙ Print speedSample Print Kanji ROM CheckEeprom Check Dram CheckFlash Memory Card Check Sensor 1 Check Non-transmissive Print status content description of each sensor/switchLabel is removed Ribbon end sensor With ribbon Ribbon endConnector FCN-781P024-G/P DIP SW CheckEXP. I/O Check Press the Pause key twice Press the Feed key twice R M a L E N D A D ErrorHead Broken Element Check E R M a L H E a D C H E C KParameter Setting Mode Press the Pause keyParameter Setting Mode Table Feed Length Fine Adjustment Press the Feed keyE D a D J U S T 2 Cut/Strip Position Fine Adjustment Press the Pause key twiceT a D J U S T Press the Pause key three times Back Feed Length Fine AdjustmentAt the same time On Section Axis fine adjustment Press the Feed key Press the Pause keyFeed Length Fine Adjustment Example Cut Position Fine Adjustment ExampleAre received When using a label with a length of less than 38 mmCase Condition Label pitchStrip Position Fine Adjustment Example Back Feed Length Fine Adjustment Example Press the Pause key four times Axis Fine AdjustmentPress the Pause key On Section Print tone fine adjustment D J U S TAxis Fine Adjustment Example Print Tone Fine Adjustment Thermal transfer printing fine adjustmentThermal direct printing fine adjustment N T code Character Code SelectionPress the Pause key seven times At the same time On Section Font zero selectionFont Zero Selection R O F O N TFeed key or Restart Control Code Selection CodePress the Pause key CodeM a N U a LN T R O L Restart∙ Transmissive ribbon Ribbon Type SelectionPress the Pause key ten times Select either ribbon type withRibbon Motor Drive Voltage Fine Adjustment Press the Pause key eleven timesStrip Wait Status Setting A T U S P EStacker Selection Press the Pause key fourteen timesA C K E R S Y S T E M O F F Threshold Manual Fine Adjustment for the Black Mark Sensor R E S H O L D RThreshold Manual Fine Adjustment for the Feed Gap Sensor Press the Pause key sixteen timesR E S H O L D T How To Calculate Theshold Fine Adjustment Value CaseWhen using labels transmissive sensor When using perforated labels transmissive sensorWhen using labels with black marks reflective sensor N J I code Kanji Code SelectionPress the Pause key 17 times Select either code withR O codeB O H Euro Font Code SelectionPress the Pause key 18 times Select the Euro font code with the Feed key orRTS/CTS Transmission Control Mode SelectionDTR/DSR Restart key atReset Selection when the Input Prime Signal is on Press the Pause key 20 timesP U T P R I M EO N I N T C O N D I T I O N Test Print ModeNormal Test Print Pause keyI N T S P E E D N S O R T R a N S M I S S I V EB E L L E N G T H P E R F E E DFeed key or Restart key From B of the preceding Test Print Sample ∙ Print Tone Fine Adjustment Value + Process Test PrintFrom B of the next Press the Pause key Bar code are printed on 5 labelsSensor Setting Mode Thermistor CheckPress the Feed key three times Black Mark Sensor Adjustment Press the Feed key Press the Pause key twiceFeed Gap Sensor Adjustment Paper End Setting for Black Mark Sensor Feed key Former value is displayedPaper End Setting for Feed Gap Sensor Indicates setting complete. Press the Pause key. See NotePress the Pause key five times RAM Clear Mode RAM Clear Mode TableOFF TypeB0H I N T E C O U N T E R C L E a R Maintenance Counter ClearR a M C L E a R M P L E T EParameter Clear R a M E T E R C L E a RIBM PC/AT SetupFloppy Disk SW#Down Load Procedure DD-MM-YYYYError Code ROM