Toshiba B-450-R manual Major Unit Replacement, Replacing the CPU PC Board

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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.

Top Cover

PT-3x10 Screw

Side Cover L

 

 

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

CN13

CPU PC Board

KEY/LED Harness

Side Cover L

 

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Contents Series Table of Contents Procedure ChecksMajor Unit Replacement Replacing the CPU PC BoardCN9 CN5 CN2 CN1 Release the two Hooks securing the Printer Unit Remove the SMW-3x6 screw, N-3 Nut and Ground Plate Replacing the Motor Ribbon MotorStepping Motor Replacing the PS Unit Hook PS Unit Printer Block Bottom Cover Detach the PS Unit from the Bottom Cover Power Switch Inlet Ass’y Replacing the Print Head Replacing the Media Sensor Replacing the Sensor PCB TRSensor PCB TR Connector Sensor Holder Harness Rivet Replacing the Sensor PCB LED Release the two Hooks securing the Printer Unit Printer Unit Harness Rivet Sensor PCB LED Troubleshooting