Check Sensor Operation (Function Code 32) - Brother DCP-7090 Service Manual

1.3.9 Check sensor operation (Function code 32)

<Function>
This function is used to check whether the sensors, solenoids, and clutches are operating normally.
<Operating Procedure>
(1) Press the [3], and then the [2] in the initial state of maintenance mode. For models
without keypad, press the [▲] or [▼] to display "MAINTENANCE 32" on the LCD and
press the [OK]. Following example is displayed on the LCD.
e.g.) CVRCPONT********
Buzzing sound comes out continuously from models with speaker.
Information related to the toner box is not displayed on the LCD when those are not connected.
Note:
Press the [SET] or [OK] to stop the buzzing sound from the speaker.
(2) Pressing the [Start] or [Mono Start] changes the display to the next item.
(3) Change the conditions subject to sensor detection shown below and check that the
display on the LCD changes depending on the sensor status. For example, feed the
paper through the registration front/rear sensor, open the front cover or back cover,
remove the toner cartridge, or create paper jam at the exit.
(4) Press the [X] or [Stop], and the machine returns to the initial state of maintenance mode.
<Sensor check>
The table below summarizes the displays on the LCD, sensor names and detection status.
LCD
CV Front cover sensor
RC Back cover/duplex tray
sensor
PO Eject sensor
*1
New toner/Toner cartridge
NT
detect sensor
*2
New process cartridge/process
NP
cartridge detect sensor
*2
New toner box/Toner box
NB
cartridge detect sensor
*2
Toner amount sensor
NT
C1 Paper feed sensor
RM Registration front sensor
RA Registration rear sensor
MP MP paper empty sensor
P1 Paper empty sensor
DF Document detection sensor
DR Document scanning position
sensor
AC ADF cover sensor
*3
Hook switch
HK
*1
Available on models without toner box
*3
Available on models with handset
Sensor name
*2
5-16
Detection status
With display
Front cover closed
Back cover closed and
Duplex tray set
No paper
OFF/
Toner cartridge set
OFF/
Process cartridge set
OFF/
Toner box cartridge set
Toner not full
T1 closed and
No paper
No paper
No paper
No paper
No paper
No document
No document
ADF cover closed
On hook
Available on models with toner box
No display
Front cover open
Back cover open and
No duplex tray
Paper set
ON/
No toner cartridge
ON/
No process cartridge
ON/
No toner box cartridge
Toner full
T1 open and
Paper set
Paper set
Paper set
Paper set
Paper set
Document set
Document set
ADF cover open
Off hook
Confidential