Operational Check Of Sensors (Function Code 32) - Brother DCP-7055 Service Manual

1.4.11 Operational check of sensors (Function code 32)

<Function>
This function allows you to check each of the sensors.
<Operating Procedure>
(1) Press the 3 and 2 buttons in this order in the initial state of the maintenance mode.
In the case of the model without the numeric keys; Press the
"MAINTENANCE 32" appears on the LCD. Then press the OK button.
(2) The machine beeps 1,100 Hz and 400 Hz tones cyclically through the following volumes
for testing the speaker. To stop beeping, press the OK button.
If the sensing status are as listed below, the LCD will show "RIRCNTRMRAPOCV_ _",
"DFDRAC" appears on the LCD.
Press the Start button to check the next item.
Given below is the relationship between the LCD indication, sensor name and sensor
state.
LCD
R1
RC
NT
RM
RA
PO
CV
40
(Last two
digits)
<Display only models with ADF>
LCD
DF
DR
AC
Note:
• The "--" appears on the LCD if there is no display.
• The "**" appears on the LCD if the parts are not installed or there is no item.
Low
OFF
1,100 Hz
High
Sensors
Paper edge sensor
Back cover sensor / DX Tray
New toner sensor
Registration front sensor
Registration rear sensor
Paper eject sensor
Front cover sensor
Internal temperature sensor
Sensors
Document detection sensor
Document scanning position
detection sensor
ADF cover open sensor
400 Hz
Medium High
OFF
Medium Low
Display
No paper
Cover closed
ON
No paper
No paper
No paper
Cover closed
Measured value
displayed
Sensor status (ON) Sensor status (OFF)
No paper
No paper
Cover closed
5-16
or button. The
Nondisplay
Paper set
Cover open
OFF
Paper set
Paper set
Paper set
Cover open
NG
Paper set
Paper set
Cover open
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