Toshiba B-570 Major Unit Replacement, Disconnect power cord before replacing important parts

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2. MAJOR UNIT REPLACEMENT

EM18-33010A (Revision Date Dec. 09, ’94)

2. MAJOR UNIT REPLACEMENT

2. MAJOR UNIT REPLACEMENT

WARNING!

Disconnect power cord before replacing important parts.

CAUTION:

1.NEVER separate the ribbon motors from the attaching plate (bracket), because doing so will change their adjustment. (See Fig. 2-8)

2.NEVER remove the two screws painted red on the side of the print block. (See Fig. 2-13)

3.NEVER remove the four screws on the side of the print block. (See Fig. 2-13)

4.NEVER remove the four screws painted red fixing the right plate and reinforcing plate.

(See Fig. 2-16) However, the machine with a serial number of 4T x x x x x x or later is not equipped with the red screws because of the change in the right plate shape.

5.NEVER remove unmentioned screws because doing so will change their adjustment.

1)Turn the power off.

2)Open the top cover to remove the four FL-3x5 screws. Slide the top cover to the left to release the damper and remove the top cover.

3)Remove the seven screws (FL-4x5 and B-4x5) to remove the left side cover.

4)Disconnect the FAN motor connector from the PS unit.

Left Side Cover	Top Cover
Left Side Cover
	Screw (FL-3x5)
FAN Motor	Damper
	Screw (FL-4x5)

Screw (B-4x5)

Fig. 2-1

NOTE: Instructions to remove the top cover and left side cover are omitted from each removal/ installation procedure provided below.

■Lubrication

CAUTION: 1) Lubrication: During parts replacement

2) Kinds of oil: FLOIL G-488: 1 Kg can. (Part No. 19454906001).

Any machine is generally in its best condition when delivered; therefore, it is necessary to try to keep this condition. Unexpected failure occurs due to lack of oil, debris or dust. To keep its best condition, periodically clean the machine and apply proper kinds of oil to each part in which lubrication is needed.

Although the frequency of lubrication varies according to how much the machine is used, at least it is necessary to lubricate before the machine becomes dry. It is also necessary to wipe off excessive oil as it collects dirt.

CAUTION: Do not spray the inside of the printer with lubricants. Unsuitable oil can damage the mechanism.

2-1

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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 Mount the cutter cover with the two screws Adjusting the Cutter Guide PlatesRemoved 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 Toshiba TEC Dirty print head Clean the print headFasten the head lever completely Refer to page 2-3 to adjust Parameter Setting Mode Test Print ModeSensor Setting Mode RAM Clear ModeDIAG. Test Operation Outline of the DIAG. Test OperationPress the Pause key. See Note L I N EU S E Self Test Mode Maintenance Counter PrintingB 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 Parameters TransB 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 Print Condition ∙ Preset count ∙ Print speed Sample PrintPROGRAM/MASK ROM Check Kanji ROM CheckDram Check Eeprom CheckFlash Memory Card Check Sensor 1 Check Print status content description of each sensor/switch Label is removed Ribbon end sensorNon-transmissive With ribbon Ribbon endDIP SW Check Connector FCN-781P024-G/PEXP. I/O Check R M a L E N D A D Error Head Broken Element CheckPress the Pause key twice Press the Feed key twice E R M a L H E a D C H E C KParameter Setting Mode Press the Pause keyParameter 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 Back Feed Length Fine Adjustment At the same time On Section Axis fine adjustmentPress the Pause key three times Press the Feed key Press the Pause keyFeed Length Fine Adjustment Example Cut Position Fine Adjustment ExampleWhen using a label with a length of less than 38 mm Case ConditionAre received Label pitchStrip Position Fine Adjustment Example Back Feed Length Fine Adjustment Example Axis Fine Adjustment Press the Pause key On Section Print tone 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 Character Code Selection Press the Pause key seven timesN T code At the same time On Section Font zero selectionR O F O N T Font Zero SelectionFeed key or Restart Control Code Selection CodeCodeM a N U a L N T R O LPress the Pause key RestartRibbon Type Selection Press the Pause key ten times∙ Transmissive ribbon Select either ribbon type withRibbon Motor Drive Voltage Fine Adjustment Press the Pause key eleven timesStrip Wait Status Setting A T U S P EPress the Pause key fourteen times Stacker SelectionA 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 RPress the Pause key sixteen times Threshold Manual Fine Adjustment for the Feed Gap SensorR E S H O L D T How To Calculate Theshold Fine Adjustment Value CaseWhen using perforated labels transmissive sensor When using labels transmissive sensorWhen using labels with black marks reflective sensor Kanji Code Selection Press the Pause key 17 timesN J I code Select either code withEuro Font Code Selection Press the Pause key 18 timesR O codeB O H Select the Euro font code with the Feed key orTransmission Control Mode Selection DTR/DSRRTS/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 Test Print Mode Normal Test PrintI N T C O N D I T I O N Pause keyI N T S P E E D N S O R T R a N S M I S S I V EP 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 ∙ Print Tone Fine Adjustment Value + Process Test PrintFrom B of the next Press the Pause key Bar code are printed on 5 labelsThermistor Check Sensor Setting ModePress 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 displayedIndicates setting complete. Press the Pause key. See Note Paper End Setting for Feed Gap SensorPress the Pause key five times RAM Clear Mode RAM Clear Mode TableType OFFB0H Maintenance Counter Clear R a M C L E a RI N T E C O U N T E R C L E a R M P L E T EParameter Clear R a M E T E R C L E a RSetup Floppy DiskIBM PC/AT SW#Down Load Procedure DD-MM-YYYYError Code ROM