Replacing The Media Sensor; Feed Gap Sensor (Tr) And Black Mark Sensor (Upper Side) - Toshiba B-852-R Series Maintenance Manual

2. MAJOR UNIT REPLACEMENT

2.8 REPLACING THE MEDIA SENSOR

2.8.1 Feed Gap Sensor (TR) and Black Mark Sensor (Upper Side)

1) Open the top cover and raise the print head block.
2) Pull up the two tabs of the sensor case cap to remove it from the sensor block.
3) Remove the feed gap sensor (TR) and black mark sensor (upper side) from the sensor case.
Disconnect the media sensor harness.
Media Sensor Harness
Black Mark Sensor
(Upper Side)
4) Replace the sensors with new ones, then reassemble in the reverse order of removal.
NOTES: 1. When reassembling the sensor case cap, fit the hooks of the sensor case into portion A of
the sensor case cap.
2. When reassembling the sensors, align the pins on the sensor case with the holes of the
sensors.
3. Connect the harness including the green wire to the black mark sensor (Upper side).
4. Pass the media sensor harness between the harness guides.
Black Mark Sensor (Upper side)
(Number of pins: 3)
Pin
5. Since connectors of the sensors are small, be careful not to break their pins.
Tab
Sensor Case
Feed Gap Sensor (TR)
Front side of the printer
A
Hook
Green
Sensor Case
Sensor Guide
Media Sensor Harness
2-16
2.8 REPLACING THE MEDIA SENSOR
Sensor Case Cap
Feed Gap Sensor (TR)
Front side of
the printer
EO18-33018