Toshiba B-852-R manual Replacing the PS Unit and Reactor

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2. MAJOR UNIT REPLACEMENT

EO18-33018

(Revision Date: May 21, 2007)

2.10 Replacing the PS Unit and Reactor

2.10 Replacing the PS Unit and Reactor

WARNING!

1.Hazardous electrical parts. Before disassembling the unit, unplug the power cord from the mains.

2.As the printer block and PS unit are heavy, be careful not to pinch your fingers or drop it on your feet.

3.The PS unit should be replaced as a unit. Never disassemble the PS unit. Doing so may cause a fire or machine failure.

NOTE: The reactor is installed in the B-852-TS22-QP-R and B-852-TS22-CN models.

1)Remove the side covers L, side cover R and MAIN PC Board from the printer.

2)Raise the print head block.

3)Remove the platen.

4)Remove the four SMW-4x8 screws to remove the power supply block from the printer block.

SMW-4x8 Screw

SMW-4x8 Screw

SMW-4x8 Screw

SMW-4x8 Screw

Printer Block

Power Supply Block

2-20

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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 Side Feed 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