Refer to page 2-3 to adjust, CPU PC board | Toshiba B-570 manual

5. TROUBLESHOOTING

EM18-33010A

5. TROUBLESHOOTING

Problems	Cause		Solution

Dot missing	1. Broken element of print head	• Replace the print head.
	2. Broken wires of print head cable	• Replace the print head harness.
	3. Failure of the CPU PC board	• Replace the CPU PC board.

Blurred print	1. Poor quality of media.	• Use only TOSHIBA TEC specified
			media.
	2. Dust is attached to the media.	• Clean the print head and remove
			the dust from the media.

Ribbon wrinkle	1. Poor quality of the ribbon	• Use only TOSHIBA TEC specified
			ribbon.
	2. Ribbon is not rewound or fed	• Replace the ribbon rewind motor
	smoothly.		or ribbon feed motor.

Ribbon end error	1. Poor quality of the ribbon.	• Use only TOSHIBA TEC specified
			ribbon.
	2. Improper voltage applied to the ribbon	•	Refer to page 2-3 to adjust the
	end sensor.		ribbon end sensor.
	3. Failure of the ribbon end sensor	• Replace the ribbon end sonsor.
	4. Failure of the circuit which controls	• Replace the CPU PC board.
	the ribbon end sensor.

Label feed failure	1. Paper is not set properly.	• Set the paper properly.
	2. Paper of poor quality	• Use the paper approved by
			TOSHIBA TEC.
	3. Improper adjustment of the feed gap	•	Re-adjust the sensor.
	sensor or black mark sensor.
	4. Failure of the feed gap sensor or	•	Replace the feed gap sensor or
	black mark sensor		black mark sensor.
	5. Labels cannot be stripped off the	• Replace the take-up motor or CPU
	backing paper or the backing paper		PC board.
	with labels cannot be wound properly.
	6. The cutter mechanism is not installed	• Install the		cutter mechanism
	properly.		properly.
	7. Failure of the stepping motor	• Replace the		stepping motor or
			CPU PC board.

Communication error	1. Failure of the communication cable	•	Replace the cable.
	2. Failure of the RS-232C connector	•	Replace the connector.
	3. Failure of the communication	•	Replace the connector.
	connector
	4. Failure of the PC or application	•	Modify the program.
	software	•	Replace IC5 (MC145407).
	5. Failure of the CPU PC board		If the trouble is not solved, replace
			the CPU PC board.

5-2

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Toshiba B-570 manual Refer to page 2-3 to adjust, CPU PC board

Contents

Series Table of Contents Procedure Checks Major Unit Replacement Disconnect power cord before replacing important parts Replacing 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 cover Replacing the Stepping Motor Replacing the Ribbon Motors Replacing the TAKE-UP Motor Replacing the Solenoid Head Up Link Solenoid Spring Pin Replacing the Print Head Old type print head Adjusting 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 Block Replacing the Pinch Roller Shaft ASS’Y Adjustment Correcting Skew Printing Installation Procedure for the Optional Equipment High Speed PC Interface Board B-4800-PC-QM Installation 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 size Fanfold Paper Guide Module B-4905-FF-QM Cutter Drive Cutter Mode Mechanism Description Harness 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 Mode DIAG. Test Operation Outline of the DIAG. Test Operation L 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 R Sample Print Print Condition ∙ Preset count ∙ Print speed Parameters Trans Automatic 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 Check Eeprom 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 end Connector 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 K Parameter Setting Mode Press the Pause key Parameter 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 key Feed Length Fine Adjustment Example Cut Position Fine Adjustment Example Are received When using a label with a length of less than 38 mmCase Condition Label pitch Strip 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 T Axis 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 selection Font Zero Selection R O F O N TFeed key or Restart Control Code Selection Code Press 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 with Ribbon Motor Drive Voltage Fine Adjustment Press the Pause key eleven times Strip Wait Status Setting A T U S P E Stacker 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 R Threshold 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 Case When 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 with R O codeB O H Euro Font Code SelectionPress the Pause key 18 times Select the Euro font code with the Feed key or RTS/CTS Transmission Control Mode SelectionDTR/DSR Restart key at Reset 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 key I N T S P E E D N S O R T R a N S M I S S I V E B 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 Print From B of the next Press the Pause key Bar code are printed on 5 labels Sensor Setting Mode Thermistor CheckPress the Feed key three times Black Mark Sensor Adjustment Press the Feed key Press the Pause key twice Feed Gap Sensor Adjustment Paper End Setting for Black Mark Sensor Feed key Former value is displayed Paper 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 Table OFF 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 E Parameter Clear R a M E T E R C L E a R IBM PC/AT SetupFloppy Disk SW# Down Load Procedure DD-MM-YYYY Error Code ROM