Toshiba B-852-R manual Replacing the Head Up Sensor

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2. MAJOR UNIT REPLACEMENT

EO18-33018

2.6Replacing the Head Up Sensor, Slit Sensor (Rewind/Feed) and Ribbon Motor (Rewind/Feed)

2.6Replacing the Head Up Sensor, Slit Sensor (Rewind/Feed) and Ribbon Motor (Rewind/Feed)

Prior to replacing the sensors or ribbon motor, perform the following operations.

1)Open the top cover. (Refer to Section 2.1.)

2)Remove the side cover L from the printer. (Refer to Section 2.1.)

3)Press down the head block release lever and raise the print head block.

Print Head Block

Head Block

Release Lever

4)Remove the MAIN PC board ass’y. (Refer to Section 2.3.)

2.6.1 Replacing the Head Up Sensor

1)Remove the sensor harness and the SMW-3x6 screw, then remove the head up sensor from the

printer.

Head Up Sensor

SMW-3x6 Screw

Sensor

Harness

2)Push and release the hook A, then release the hook B to remove the head up sensor from the sensor holder.

Sensor Holder

Head Up Sensor

1

2

Hook A

1

Hook B

2-10

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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