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TOSHIBA Barcode Printer
B-450-R SERIES
Maintenance Manual
Document No. EO18-33021
Original Jun., 2008
(Revised )
PRINTED IN JAPAN
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EO18-33021 TABLE OF CONTENTS Page 1. UNPACKING............................................................................................................................1- 1 1.1 PROCEDURE..................................................................................................................1- 1 1.2 CHECKS..........................................................................................................................1- 1 2. MAJOUR UNIT REPLACEMENT.................
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1. UNPACKING EO18-33021 1.1 PROCEDURE 1. UNPACKING 1.1 PROCEDURE 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 Cushion Printer Power Cord 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. 1- 1
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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 conditio
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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 CN8 CN500 CN1
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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 2- 3
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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. T-3x10 Screw Printer Block CPU PC Board Ass’y T-3x10 Screw T-3x10 Screw SMW-3x6 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
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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. Ribbon Motor Harness PT-3x10 Screw Attaching Plate Ribbon Motor Harness PT-3x10 Screw Attaching Plate 3) Remove the four SMW-2.6x6 screws to detach the two Ribbon Motors from the Ribbon M
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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-3x
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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.
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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. Hook PS Unit Printer Block Bottom Cover 2- 8
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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.
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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 Inlet Ass’y Inlet Ass’y (Connector) CN1 11) Remove the SMW-3x4 screw to detach the Fan Motor Attachment Plate from the PS Unit. SMW-3x4 Screw Fan Motor Attac
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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 Ha
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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. Sensor Holder Sensor Cover Sheet Sensor Holder
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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 PCB (TR) Connector Sensor Holder Harness Rivet 6) Replace the Sensor PCB (TR) with a new one, and then reassemble in the reverse order of removal. 2- 13
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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. Side Cover L PT-3x10 Screw Top Cover 3) Disconnect KEY/LED Harness from connector CN13 on the CPU PC Board. CN13 CPU PC Board Side Cover L KEY/LED Harness 4) Remove the PT-3x10 screw and detach the Side Cover R from the
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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 2- 15
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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. Printer Unit Harness Rivet Sensor PCB (LED) 9) Replace the Sensor PCB (LED)
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3. TROUBLESHOOTING EO18-33021 3. TROUBLESHOOTING 3. TROUBLESHOOTING Problems Cause Solution Power is not turned ON. 1. Input voltage to the printer is not Replace the power cord or power within the rated voltage. inlet. 2. Output voltage from the printer is not Replace the PS unit. within the rated voltage. 3. MAIN PC Board is not applied with Replace the power harness. voltage. 4. Failure of MAIN PC board. Replace the MAIN PC board. LED does not light. 1. Failure of the KEY
