Toshiba e-STUDIO556 Service Manual page 264

4.9.20 Developer unit detection switch (SW3)
(1) Take off the cleaner unit.
( P.4-75 "4.8.1 Cleaner unit")
(2) Disconnect 1 connector, remove 1 screw and
then take off the sensor bracket.
(3) Disconnect 2 connectors, remove 1 screw
and then take off the developer unit detection
switch.
4.9.21 Toner filter unit / Developer unit fan (M31)
(1) Take off the right rear cover.
( P.4-4 "4.1.9 Right rear cover")
(2) Pull out the toner filter.
(3) Remove 2 screws to pull out the filter duct.
(4) Disconnect 1 connector of the fan.
e-STUDIO556/656/756/856/557/657/757/857
DISASSEMBLY AND REPLACEMENT
Sensor bracket
Screw
Developer unit detection switch
Toner filter
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Screw
Fig. 4-279
Connector
Fig. 4-280
Filter duct
Fig. 4-281