Sensor Operational Check - Brother FAX-170 Service Manual

3.7

Sensor Operational Check

Function
This function allows you to check that the six sensors (document front sensor, document rear
sensor, cover sensor, PE sensor, cutter HP sensor and hook switch sensor*) operate cor-
rectly.
In those versions equipped with a non-Binatone handset, the LCD shows the "FRE RC PE
CHK" when
- the document front and rear sensors detect no paper (FRE),
- the recording paper cover is closed (RC),
- the PE sensor detects paper loaded (PE), and
- the cutter HP sensor detects that the cutter is placed in the home position and the hook
switch sensor detects the on-hook state (CHK).
In those versions equipped with a Binatone handset, the LCD shows the "FRE RC PE CH"
when
- the document front and rear sensors detect no paper (FRE),
- the recording paper cover is closed (RC),
- the PE sensor detects paper loaded (PE), and
- the cutter HP sensor detects that the cutter is placed in the home position (CH).
Operating Procedure
(1) Press the 3 and 2 keys in this order in the initial maintenance mode.
In those versions equipped with a non-Binatone handset, the LCD should show "FRE
RC PE CHK" if the detecting conditions of the six sensors are as defined above.
In those versions equipped with a Binatone handset, the LCD should show "FRE RC
PE CH" if the detecting conditions of the five sensors are as defined above.
(2) Change the detecting conditions and check that the indication on the LCD changes as
follows:
- Insert paper through the document front sensor, and the "F" of the FRE disappears.
- Insert paper through the document rear sensor, and the "E" of the FRE disappears.
- Open the control panel, and the "RC" disappears.
- Remove the recording paper, and the "PE" disappears.
- Shift the upper blade of the automatic cutter out of its home position, and the "C" of
the CHK (CH) disappears.
- Lift up the handset, and the "K" of the CHK disappears. (Only on those versions with
a non-Binatone handset)
(3) To stop this operation and return the equipment to the initial maintenance mode, press
the Stop key.
(*In those versions equipped with a Binatone handset,
the hook switch sensor serves no function.)
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