Toshiba B-570 manual New type print head

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2. MAJOR UNIT REPLACEMENT

EM18-33010A (Revision Date Feb. 01, ’96)

2.6 REPLACING THE PRINT HEAD

2.6.2New type print head

NOTE: NEVER loosen screws other than two SM-4x8B.

1)Turn the head lever clockwise to lower the print head. Remove the two SM-4x8B screws.

2)Turn the head lever counterclockwise and disconnect the two connectors to detach the print head from the print block.

Screw (SM-4x8B)

Screws

(NEVER remove these screws.)

Print Block

Connector

B

	A	Screws painted red
	A	(NEVER remove these screws.)
		(NEVER remove these screws.)
	B
	Connector	Fig. 2-15
	Print Head

3)Replace the print head and connect the connectors.

4)Align the two holes A in the middle of the print head with the print head position adjusting pins provided in the print block and fit the print head into the print block.

5)Turn the head lever clockwise and secure the print head with screws in the holes B .

■Adjusting the print head position

When print tone becomes light from using special paper with improper print head position, please follow the procedure below and adjust the print head position.

NOTE:

Never loosen screws C unless print position fine adjustment is required because they have been adjusted properly. Doing so will change the adjustment.

2-10

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Contents Series Table of Contents Checks ProcedureDisconnect power cord before replacing important parts Major Unit ReplacementReplacing 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 sideReplacing the Stepping Motor Replacing the TAKE-UP Motor Replacing the Ribbon MotorsReplacing the Solenoid Head Up Link Solenoid Spring Pin Old type print head Replacing the Print HeadAdjusting 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 SensorReplacing the Pinch Roller Shaft ASS’Y Adjustment Correcting Skew Printing High Speed PC Interface Board B-4800-PC-QM Installation Procedure for the Optional EquipmentInstallation Procedure for the Optional Equipment Cutter Module B-4205-QM EM18-33010A SVO7A1003 Nov ’97 Mount the cutter cover with the two screws Adjusting the Cutter Guide PlatesRemoved Parts ’ty/Unit Front plate Expansion memory and drawing size Memory ModuleFanfold Paper Guide Module B-4905-FF-QM Mechanism Description Cutter Drive Cutter ModeHarness Wiring Toshiba TEC Dirty print head Clean the print headFasten the head lever completely Refer to page 2-3 to adjust Test Print Mode Parameter Setting ModeSensor Setting Mode RAM Clear ModeOutline of the DIAG. Test Operation DIAG. Test OperationPress the Pause key. See Note L I N EU S E Maintenance Counter Printing Self Test ModeB B O N I N T E N a N C E C O U N T E RSample Print Print Condition ∙ Preset count ∙ Print speed Trans ParametersB B O N T R a N S M I S S I V E Automatic Diagnostic PrintingPress the Pause key On .2.3 Head Broken Element Check Sample Print Print Condition ∙ Preset count ∙ Print speedPROGRAM/MASK ROM Check Kanji ROM CheckDram Check Eeprom CheckFlash Memory Card Check Sensor 1 Check Label is removed Ribbon end sensor Print status content description of each sensor/switchNon-transmissive With ribbon Ribbon endDIP SW Check Connector FCN-781P024-G/PEXP. I/O 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 KPress the Pause key Parameter Setting ModeParameter Setting Mode Table Press the Feed key Feed Length Fine AdjustmentE D a D J U S T Press the Pause key twice 2 Cut/Strip Position Fine AdjustmentT a D J U S T 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 keyCut Position Fine Adjustment Example Feed Length Fine Adjustment ExampleCase Condition When using a label with a length of less than 38 mmAre received Label pitchStrip 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 TAxis Fine Adjustment Example Thermal transfer printing fine adjustment Print Tone Fine AdjustmentThermal direct printing fine adjustment Press the Pause key seven times Character Code SelectionN T code At the same time On Section Font zero selectionR O F O N T Font Zero SelectionFeed key or Restart Code Control Code SelectionN T R O L CodeM a N U a LPress the Pause key RestartPress the Pause key ten times Ribbon Type Selection∙ Transmissive ribbon Select either ribbon type withPress the Pause key eleven times Ribbon Motor Drive Voltage Fine AdjustmentA T U S P E Strip Wait Status SettingPress the Pause key fourteen times Stacker SelectionA C K E R S Y S T E M O F F R E S H O L D R Threshold Manual Fine Adjustment for the Black Mark SensorPress the Pause key sixteen times Threshold Manual Fine Adjustment for the Feed Gap SensorR E S H O L D T Case How To Calculate Theshold Fine Adjustment ValueWhen using perforated labels transmissive sensor When using labels transmissive sensorWhen using labels with black marks reflective sensor Press the Pause key 17 times Kanji Code SelectionN J I code Select either code withPress the Pause key 18 times Euro Font Code SelectionR O codeB O H Select the Euro font code with the Feed key orDTR/DSR Transmission Control Mode SelectionRTS/CTS Restart key atPress the Pause key 20 times Reset Selection when the Input Prime Signal is onP U T P R I M EO N Normal Test Print Test Print ModeI N T C O N D I T I O N Pause keyN S O R T R a N S M I S S I V E I N T S P E E DP E R F E E D B E L L E N G T HFeed key or Restart key 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 nextThermistor Check Sensor Setting ModePress the Feed key three times Press the Feed key Press the Pause key twice Black Mark Sensor AdjustmentFeed Gap Sensor Adjustment Feed key Former value is displayed Paper End Setting for Black Mark SensorIndicates setting complete. Press the Pause key. See Note Paper End Setting for Feed Gap SensorPress the Pause key five times RAM Clear Mode Table RAM Clear ModeType OFFB0H 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 ER a M E T E R C L E a R Parameter ClearFloppy Disk SetupIBM PC/AT SW#DD-MM-YYYY Down Load ProcedureROM Error Code