Operational Check Of Sensors (Function Code: 32) - Brother FAX-2840 Service Manual

1.3.10 Operational check of sensors (Function code: 32)

<Function>
This function is used to check that the sensors are operating normally.
<Operating Procedure>
(1) Press the [3] and [2] buttons in this order in the initial state of the maintenance mode.
(2) Check mode is entered. The speaker emits 1,100 Hz and 400 Hz tones cyclically
through the following volumes. To stop tones, press the [OK] button.
"**RCNTRMRAPOCV25" appears on the LCD, and the sensor operating conditions
defined in the table below are applied.
When the [Start] button is pressed, the display changes to "DFDR****AC****".
The table below shows the relationship between the LCD display, sensor names and
detection status.
LCD
RC
NT
RM
RA
PO
CV
25
(last two digits)
DF
DR
AC
Note:
• "**" appears on the LCD if the parts are not installed or there is no item.
400 Hz
Low Medium
OFF
1,100 Hz
High Medium
Sensor name
Back cover sensor
New toner sensor
Registration front sensor
Registration rear sensor
Eject sensor
Front cover sensor
Internal temperature thermistor Measured value
Document detection sensor
Document scanning position
sensor
Control panel cover sensor
5-16
High
OFF
Low
Sensor name
displayed
Cover closed
ON
No paper
No paper
No paper
Cover closed
displayed
No paper
No paper
Cover closed
-- displayed
Cover open
OFF
Paper set
Paper set
Paper set
Cover open
NG
Paper set
Paper set
Cover open
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