TOSHIBA Barcode Printer

B-450-R SERIES

Maintenance Manual

Document No. EO18-33021

Original Jun., 2008

(Revised)

PRINTED IN JAPAN

EO18-33021

TABLE OF CONTENTS

CAUTION!

1.This manual may not be copied in whole or in part without prior written permission of TOSHIBA TEC.

2.The contents of this manual may be changed without notification.

Copyright ?? 2008

by TOSHIBA TEC CORPORATION All Rights Reserved

570 Ohito, Izunokuni-shi, Shizuoka-ken, JAPAN

1. UNPACKING

EO18-33021

1.1 PROCEDURE

1. UNPACKING

1.1PROCEDURE

1)Open the carton.

2)Unpack the side pad (R) and cushions and the printer from the carton.

Owner???s Manual

Side Pad (R)

Cushion

Carton

3)Place the printer on a level surface.

1.2 CHECKS

Check for damage or scratches on the printer.

NOTE: Keep the carton, pads and cushions for later transport.

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.1. REPLACING THE CPU PC BOARD

2. MAJOR UNIT REPLACEMENT

WARNING!

Disconnect power cord before replacing important parts.

?? Lubrication

CAUTION: 1) Lubrication: During parts replacement.

2) Kinds of oil: 1Kg 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 REPLACING THE CPU PC BOARD

1)Open the Top Cover.

2)Remove the two PT-3x10 screws to detach the Side Cover L.

3)Disconnect KEY/LED Harness from connector CN13 on the CPU PC Board.

CN13

CPU PC Board

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.1. REPLACING THE CPU PC BOARD

4)Remove the PT-3x10 screw and detach the Side Cover R from the printer.

PT-3x10 Screw

Side Cover R

5)Disconnect the seven harnesses from CN1, CN2, CN5, CN8 to CN10, and CN500 on the CPU PC Board.

6)Remove the T-3x10 screw and the Ground Wire to detach the CPU PC Board.

CPU PC Board

CN9

CN5

CN2

CN1

CN500 CN8

CN10

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.1. REPLACING THE CPU PC BOARD

7)Release the two Hooks securing the Printer Unit.

Printer Unit

Hook

Hook

8)Detach the Printer Unit from the Bottom Cover.

Hook

Printer Unit

Bottom Cover

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.1. REPLACING THE CPU PC BOARD

9)Remove the four screws (T-3x10 and SMW-3x6) and detach the CPU PC Board Ass???y from the Printer Block.

CPU PC Board Ass???y

T-3x10 Screw

10)Remove the four screws (SMW-3x6 and P-3x6) and detach the CPU PC Board from the PC Board Attached Plate.

SMW-3x6 Screw

P-3x6 Screw

11) Remove the SMW-3x6 screw, N-3 Nut and Ground Plate.

Ground Plate

SMW-3x6 Screw

N-3 Nut

12) Replace the CPU PC Board with a new one, and then reassemble in the reverse order of removal.

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.2. REPLACING THE MOTOR

2.2 REPLACING THE MOTOR

2.2.1 Ribbon Motor

1)Remove the CPU PC Board Ass???y. (Refer to Section 2-1)

2)Remove the two PT-3x10 screws and harnesses to detach the Ribbon Motor Attaching Plate.

3)Remove the four SMW-2.6x6 screws to detach the two Ribbon Motors from the Ribbon Motor Attaching Plate.

FLOIL G-488

SMW-2.6x6 Screw

SMW-2.6x6 Screw

Ribbon Motor

Ribbon Motor

Ribbon Motor Attaching Plate

4)Replace the Ribbon Motors with new ones, and then reassemble in the reverse order of removal.

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2. MAJOUR UNIT REPLACEMENT

EO18-33021 2.2. REPLACING THE MOTOR

2.2.2 Stepping Motor

WARNING!

Be careful not to get burned when handling the stepping motor since it becomes very hot while printing.

1)Remove the CPU PC Board Ass???y. (Refer to Section 2.1)

2)Remove the two PT-3x10 screws to detach the Stepping Motor Ass???y.

PT-3x10 Screw

Stepping Motor Ass???y

3)Remove the two SMW-3x6 screws to detach the Stepping Motor.

SMW-3x6 Screw

Stepping Motor

4)Replace the Stepping Motor with a new one, and then reassemble in the reverse order of removal.

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.3. REPLACING THE PS UNIT

2.3 REPLACING THE PS UNIT

WARNING!

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

1)Remove the Top Cover and Side Cover L. (Refer to Section 2.1)

2)Remove the PT-3x10 screw to detach the Side Cover R.

PT-3x10 Screw

Side Cover R

3)Disconnect the Power Harness and Fan Motor Harness from CN8 and CN10 on the CPU PC Board.

CN8

Power Harness

CN10

Fan Motor Harness

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.3. REPLACING THE PS UNIT

4)Release the two Hooks securing the Printer Unit.

Printer Unit

Hook

Hook

5)Detach the Printer Unit from the Bottom Cover.

Printer Block

Bottom Cover

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.3. REPLACING THE PS UNIT

6)Detach the PS Unit from the Bottom Cover.

Bottom Cover

PS Unit

7)Replace the PS Unit as an assembly, then, reassemble in the reverse order of steps 1) to 6).

To replace the Fan Motor, Power Harness, Inlet Ass???y, PSU Cover, etc. individually, follow the steps 8) to 12) provided below.

8)Remove the SMW-3x6, SMW-3x8, and D-3x5 screws to detach the PSU Cover from the PS Unit.

SMW-3x6 Screw

9)Disconnect the Power Harness from CN4 on the PS Unit. Remove the SMW-4x8 screw to release the Ground Wire of the Inlet Ass???y.

Power Harness

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.3. REPLACING THE PS UNIT

10)Push both sides of the Power Switch with something like pliers and remove it from the frame of the PS Unit. Disconnect the Inlet Ass???y from CN1 on the PS Unit.

Power Switch

CN1

11) Remove the SMW-3x4 screw to detach the Fan Motor Attachment Plate from the PS Unit.

12)After replacing the individual part with a new one as necessary, reassemble in the reverse order of steps 8) to 11).

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.4. REPLACING THE PRINT HEAD

2.4 REPLACING THE PRINT HEAD

CAUTION: 1. NEVER touch the element when handling the print head.

2.NEVER touch the connector pins Touching them may cause a static electric discharge which will damage the print head.

1)Open the Top Cover.

2)Push down the Head Release Lever R to open the Print Head Block.

Print Head Block

Head Release Lever R

3)Disconnect the two Print Head Harnesses. Then, pull the Print Head Ass???y upward while pulling the Knob.

NEVER touch the element when handling the print head.

Print Head Ass???y

Print Head Ass???y

4)Replace the Print Head with a new one, and then reassemble in the reverse order of removal.

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.5. REPLACING THE MEDIA SENSOR

2.5 REPLACING THE MEDIA SENSOR

2.5.1 Replacing the Sensor PCB (TR)

1)Push down the Head Release Lever R to open the Print Head Block. (Refer to Section 2.4)

2)Remove the Sensor Holder from the Sensor Holder Arm.

Sensor Holder Arm

Sensor Holder

3)Remove the Sensor Cover Sheet from the Sensor Holder.

4)Release the Sensor Holder while spreading the tabs of the Sensor Holder. Be careful not to break the tabs when spreading them.

Tab

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.5. REPLACING THE MEDIA SENSOR

5)Disconnect the harness from the Sensor PCB (TR), and remove the Sensor PCB (TR) from the Sensor Holder by releasing the two Rivets.

Sensor Holder

Harness

Rivet

6)Replace the Sensor PCB (TR) with a new one, and then reassemble in the reverse order of removal.

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.5. REPLACING THE MEDIA SENSOR

2.5.2 Replacing the Sensor PCB (LED)

1)Open the Top Cover.

2)Remove the two PT-3x10 screws to detach the Side Cover L.

3)Disconnect KEY/LED Harness from connector CN13 on the CPU PC Board.

CN13

CPU PC Board

4)Remove the PT-3x10 screw and detach the Side Cover R from the printer.

PT-3x10 Screw

Side Cover R

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.5. REPLACING THE MEDIA SENSOR

5)Disconnect the Power Harness and Fan Motor Harness from CN8 and CN10 on the CPU PC Board.

CN8

Power Harness

CN10

Fan Motor Harness

6)Release the two Hooks securing the Printer Unit.

Printer Unit

Hook

Hook

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2. MAJOUR UNIT REPLACEMENT

EO18-33021

2.5. REPLACING THE MEDIA SENSOR

7)Detach the Printer Unit from the Bottom Cover.

Hook

Printer Unit

Bottom Cover

8)Disconnect the harness from the Sensor PCB (LED) which is attached to the bottom of the Printer Unit. Then remove the Rivet to detach the Sensor PCB (LED) from the Printer Unit.

Sensor PCB (LED)

9)Replace the Sensor PCB (LED) with a new one, and then reassemble in the reverse order of removal.

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3. TROUBLESHOOTING

3. TROUBLESHOOTING

EO18-33021

3. TROUBLESHOOTING

3- 1