Sensor Operational Check - Brother FAX255 Service Manual

3.8

Sensor Operational Check

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Function
This function allows you to check that the six sensors (document front sensor, document rear
sensor, cover sensor, paper empty (PE) sensor, cutter home position (HP) sensor, and hook switch
sensor) operate correctly.
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Operating Procedure
(1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode. The
equipment sounds 1100 Hz and 400 Hz tones cyclically through the following volumes for
testing the speaker.
To disable the speaker, press the Function key (FAX255/FAX275/FAX355MC/FAX375MC) or
Menu key (FAX-515/FAX-525DT/FAX-525MC/HOMEFAX3). With the key, you may toggle
the speaker on and off.
If the sensing status are as listed below, the LCD will show the following:
Given below is the relationship between the LCD indication, sensor name and sensor status.
LCD
FRE
RC
PE
CH
K
(2) Change the detecting conditions and check that the displayed letters disappear. For example,
insert a document through the document front (or rear) sensor and check that the "F" ( or "E")
of the FRE disappears.
(3) To stop this operation, press the Stop key. The equipment beeps for one second and returns
to the initial stage of the maintenance mode.
FRE RC PE CHK
Sensors
Document front and rear sensors
Cover sensor
PE sensor
Cutter HP sensor
Hook switch sensor
Sensing status
No document detected.
Recording paper cover ASSY closed.
Recording paper loaded.
Cutter placed in the home position.
On-hook state.
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