Toshiba B-570 manual Replacing the PS UNIT, I/F PC Board and CPU PC Board

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2. MAJOR UNIT REPLACEMENT

EM18-33010A (Revision Date Oct. 14, ’94)

2.1 REPLACING THE PS UNIT, I/F PC BOARD AND CPU PC BOARD

2.1 REPLACING THE PS UNIT, I/F PC BOARD AND CPU PC BOARD

CAUTION:

Replace only with same type and ratings of fuse for continued protection against risk of fire.

1)Remove the three FL-4x6 screws and disconnect the two connectors to detach the PS unit.

2)Remove the FL-3x5 screw and the four locking supports to remove the I/F PC board.

I/F PC Board

Locking Support

Screw (FL-3x5)

Screw (FL-4x6)

Connector

PS Unit	Fig. 2-2
	Screw (FL-4x6)

3)Disconnect the 13 connectors from the CPU PC board.

4)Remove the six screws (SM-3x6B, SM-3x6C) to detach the CPU PC board from the printer.

Screw (SM-3x6B)	Screw (SM-3x6B)
Connector

Screw (SM-3x6C)

Connector

I/F Connector

CPU PC Board

Connector

Screw (SM-3x6B)

Connector

Connector	Screw (SM-3x6B)	Fig. 2-3
	Screw (SM-3x6B)	Fig. 2-3
	Connector

5)Replace the PS unit, I/F PC board and CPU PC board. Insert the connectors correctly and install in the reverse order of removal above. Do not mount the left side cover and top cover.

2-2

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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 Removed Parts ’ty/Unit Front plate Adjusting the Cutter Guide PlatesMount the cutter cover with the two screws Expansion memory and drawing size Memory ModuleFanfold Paper Guide Module B-4905-FF-QM Mechanism Description Cutter Drive Cutter ModeHarness 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 ModeOutline of the DIAG. Test Operation DIAG. Test OperationU 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 RSample Print Print Condition ∙ Preset count ∙ Print speed Trans ParametersPress 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 CheckFlash 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 endEXP. 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 KPress the Pause key Parameter Setting ModeParameter 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 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 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 selectionFeed key or Restart Font Zero SelectionR O F O N T 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 SettingA 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 SensorR 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 ValueWhen 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 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 atP 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 keyN S O R T R a N S M I S S I V E I N T S P E E DFeed 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 nextPress the Feed key three times Sensor Setting ModeThermistor Check 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 SensorPress 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 ModeB0H 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 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