Toshiba B-450-R manual Remove the SMW-3x6 screw, N-3 Nut and Ground Plate

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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 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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Contents Series Table of Contents Checks ProcedureReplacing the CPU PC Board Major Unit ReplacementCN9 CN5 CN2 CN1 Release the two Hooks securing the Printer Unit Remove the SMW-3x6 screw, N-3 Nut and Ground Plate Ribbon Motor Replacing the 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 Sensor PCB TR Replacing the Media SensorSensor 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