Toshiba B-852-R manual Remove the two SMW-4x8 screws, SMW-3x6 screw and B-3x6 screw

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2. MAJOR UNIT REPLACEMENT

EO18-33018

2.3 Replacing the MAIN PC Board

4)Remove the two SMW-4x8 screws, SMW-3x6 screw and B-3x6 screw.

MAIN PC Board Ass’y

B-3x6 Screw

SMW-4x8 Screw

SMW-3x6 Screw

5)Disconnect the power harness from CN8 on the MAIN PC board ass’y, then remove the MAIN PC board ass’y from the printer.

Power Harness

MAIN PC Board Ass’y

CN8

2-4

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Contents Series Table of Contents Procedure UnpackingChecks Major Unit Replacement Opening and Removing the CoversLubrication Replacing the Main PC Board Remove the two SMW-4x8 screws, SMW-3x6 screw and B-3x6 screw Main PC Board 3x6 Screw Main PCB Support Frame SMW-3x6 Replacing the Panel PC Board Major Unit Replacement Replacing the Stepping Motor Pulley Motor Gear Stepping Motor Replacing the Head Up Sensor Replacing the Slit Sensor Rewind/Feed Replacing the Ribbon Motor Rewind/Feed Major Unit Replacement Replacing the Platen Platen Shaft Holder Replacing the Media Sensor Feed Gap Sensor TR and Black Mark Sensor Upper SideFeed Gap Sensor LED and Black Mark Sensor Lower Side Pass the media sensor harness between the harness guides Replacing the Print Head Replacing the PS Unit and Reactor Disconnect the PSU harness from CN4 on the PS unit Inlet Periodic Maintenance Procedure Periodic Maintenance Procedure Replacement Periodic Maintenance Procedure Troubleshooting Toshiba TEC