Toshiba B-852-R manual Feed Gap Sensor LED and Black Mark Sensor Lower Side

2. MAJOR UNIT REPLACEMENT

EO18-33018

2.8 REPLACING THE MEDIA SENSOR

2.8.2 Feed Gap Sensor (LED) and Black Mark Sensor (Lower Side)

1)Remove the platen holder R, platen holder L, platen, and strip plate from the printer

2)Remove the SMW-4x8 screw to detach the front cover from the printer.

3)Unhook the two springs.

4)Remove the two SMW-3x6 screws to detach the sensor block from the pritner.

	A	SMW-3x6 Screw
		Sensor Block
		Spring
		SMW-4x8 Screw
To CN15 on the		Front Cover
CPU PC board
ass’y		A
	Spring

5)Turn over the sensor block.

6)Pull up the two tabs of the sensor case cap to remove it from the sensor case.

7)Remove the feed gap sensor (LED) and black mark sensor (lower side) from the sensor case, and disconnect the media sensor harness from each sensor.

Tab

Black Mark Sensor	A
(Lower Side)

Front side of the printer

Sensor Case

Sensor Case Cap

Media Sensor Harness Feed Gap Sensor (LED)

Hook

8) Replace the sensor with a new one, then reassemble in the reverse order of removal.

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