Toshiba TEC, Dirty print head Clean the print head | Toshiba B-570

5. TROUBLESHOOTING

EM18-33010A

5. TROUBLESHOOTING

5. TROUBLESHOOTING

Problems	Cause	Solution

Power is not turned	1. Input voltage to the printer is not	• Replace the power cable or power
ON.	within the rated voltage.	inlet.
	(Check by CN1 on the PS unit.)
	2. Output voltage from the printer is not	• Replace the PS unit.
	within the rated voltage.
	(Check that the voltage between Pin
	4 and Pin 6 (GND) of CN2 on the PS
	unit is 27 V.
	And check the voltage between Pin 1
	and Pin 3 (GND) is 5 V.)
	3. CPU PC board is not applied with	• Replace the power harness.
	voltage.
	(Check the voltage between Pin 1
	and Pin 3 (GND) of the CN17 on the
	CPU PC board is 27 V.)
	4. Failure of CPU PC board.	• Replace the CPU PC board.

LED or LCD does not	1. Failure of the LED board/LCD	• Replace the LED board/LCD.
light.	2. Failure of the LCD/LED harness	• Replace the LCD/LED harness.
	3. Failure of the CPU PC board	• Replace the CPU PC board.

Poor printing	1. The print paper is of poor quality.	• Use the media approved by
		TOSHIBA TEC.
	2. Dirty print head	• Clean the print head.
	3. The head lever fastens the print head	• Fasten the head lever completely.
	incompletely.
	4. Alignment adjustment of the print	• Re-adjust the print head.
	head is improper.

Printer does not print.	1. Print head failure	• Replace the print head.
	2. Connection of the print head	• Connect the harness completely,
	connector is incomplete, a bad	or replace the harness.
	contact, or broken wires.
	3. Failure in rewinding/feeding of the	• Replace the ribbon rewind motor,
	ribbon.	ribbon feed motor or CPU PC
		board.
	4. Failure of the CPU PC board	• Replace the CPU PC board.
	5. Failure of the software	• Check the program.
	6. Failure of the printer cable	• Replace the printer cable.

5-1

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Toshiba B-570 manual Toshiba TEC, Dirty print head Clean the print head, Fasten the head lever completely

Contents

Series Table of Contents Checks Procedure Disconnect power cord before replacing important parts Major Unit Replacement Replacing the PS UNIT, I/F PC Board and CPU PC Board Cover and top cover An oscilloscope Turn the power off and mount the left side Replacing the Stepping Motor Replacing the TAKE-UP Motor Replacing the Ribbon Motors Replacing the Solenoid Head Up Link Solenoid Spring Pin Old type print head Replacing the 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 Ribbon Back Tension Block Replacing the Paper Sensor Replacing the Pinch Roller Shaft ASS’Y Adjustment Correcting Skew Printing High Speed PC Interface Board B-4800-PC-QM Installation Procedure for the Optional Equipment Installation Procedure for the Optional Equipment Cutter Module B-4205-QM EM18-33010A SVO7A1003 Nov ’97 Removed Parts ’ty/Unit Front plate Adjusting the Cutter Guide PlatesMount the cutter cover with the two screws Expansion memory and drawing size Memory Module Fanfold Paper Guide Module B-4905-FF-QM Mechanism Description Cutter Drive Cutter Mode Harness Wiring Fasten the head lever completely Dirty print head Clean the print headToshiba TEC Refer to page 2-3 to adjust Test Print Mode Parameter Setting ModeSensor Setting Mode RAM Clear Mode Outline of the DIAG. Test Operation DIAG. Test Operation U S E L I N EPress the Pause key. See Note Maintenance Counter Printing Self Test ModeB B O N I N T E N a N C E C O U N T E R Sample Print Print Condition ∙ Preset count ∙ Print speed Trans Parameters Press the Pause key On .2.3 Head Broken Element Check Automatic Diagnostic PrintingB B O N T R a N S M I S S I V E Sample Print Print Condition ∙ Preset count ∙ Print speedPROGRAM/MASK ROM Check Kanji ROM Check Flash Memory Card Check Eeprom CheckDram Check Sensor 1 Check Label is removed Ribbon end sensor Print status content description of each sensor/switchNon-transmissive With ribbon Ribbon end EXP. I/O Check Connector FCN-781P024-G/PDIP SW Check Head Broken Element Check R M a L E N D A D ErrorPress the Pause key twice Press the Feed key twice E R M a L H E a D C H E C K Press the Pause key Parameter Setting Mode Parameter Setting Mode Table E D a D J U S T Feed Length Fine AdjustmentPress the Feed key T a D J U S T 2 Cut/Strip Position Fine AdjustmentPress the Pause key twice At the same time On Section Axis fine adjustment Back Feed Length Fine AdjustmentPress the Pause key three times Press the Feed key Press the Pause key Cut Position Fine Adjustment Example Feed Length Fine Adjustment Example Case Condition When using a label with a length of less than 38 mmAre received Label pitch Strip Position Fine Adjustment Example Back Feed Length Fine Adjustment Example Press the Pause key On Section Print tone fine adjustment Axis Fine AdjustmentPress the Pause key four times D J U S T Axis Fine Adjustment Example Thermal direct printing fine adjustment Print Tone Fine AdjustmentThermal transfer printing fine adjustment Press the Pause key seven times Character Code SelectionN T code At the same time On Section Font zero selection Feed key or Restart Font Zero SelectionR O F O N T Code Control Code Selection N T R O L CodeM a N U a LPress the Pause key Restart Press the Pause key ten times Ribbon Type Selection∙ Transmissive ribbon Select either ribbon type with Press the Pause key eleven times Ribbon Motor Drive Voltage Fine Adjustment A T U S P E Strip Wait Status Setting A C K E R S Y S T E M O F F Stacker SelectionPress the Pause key fourteen times R E S H O L D R Threshold Manual Fine Adjustment for the Black Mark Sensor R E S H O L D T Threshold Manual Fine Adjustment for the Feed Gap SensorPress the Pause key sixteen times Case How To Calculate Theshold Fine Adjustment Value When using labels with black marks reflective sensor When using labels transmissive sensorWhen using perforated labels transmissive sensor Press the Pause key 17 times Kanji Code SelectionN J I code Select either code with Press the Pause key 18 times Euro Font Code SelectionR O codeB O H Select the Euro font code with the Feed key or DTR/DSR Transmission Control Mode SelectionRTS/CTS Restart key at P U T P R I M EO N Reset Selection when the Input Prime Signal is onPress the Pause key 20 times Normal Test Print Test Print ModeI N T C O N D I T I O N Pause key N S O R T R a N S M I S S I V E I N T S P E E D Feed key or Restart key B E L L E N G T HP E R F E E D From B of the preceding Test Print Sample Process Test Print ∙ Print Tone Fine Adjustment Value + Press the Pause key Bar code are printed on 5 labels From B of the next Press the Feed key three times Sensor Setting ModeThermistor Check Press the Feed key Press the Pause key twice Black Mark Sensor Adjustment Feed Gap Sensor Adjustment Feed key Former value is displayed Paper End Setting for Black Mark Sensor Press the Pause key five times Paper End Setting for Feed Gap SensorIndicates setting complete. Press the Pause key. See Note RAM Clear Mode Table RAM Clear Mode B0H OFFType R a M C L E a R Maintenance Counter ClearI N T E C O U N T E R C L E a R M P L E T E R a M E T E R C L E a R Parameter Clear Floppy Disk SetupIBM PC/AT SW# DD-MM-YYYY Down Load Procedure ROM Error Code