Sensor Operational Check (Function Code 32) - Brother DCP-8070D Service Manual

4.10 Sensor Operational Check (Function code 32)

<Function>
This function allows you to check whether the each sensors work correctly.
<Operating Procedure>
(1) Press the [3] and [2] keys in this order in the initial stage of the maintenance mode.
The machine beeps 1100 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 the following:
"C1P1C2P2T2T3BC**", "TNMPNTRMRSPOCV" and "DFDRDLDSFCFH****"
(which can be switched by pressing the [Start] button for machines.)
Given below is the relationship among the LCD indication, sensor names and sensor
status.
LCD
C1
P1
C2
P2
T2
T3
BC
(Used for both standard tray and duplex tray.)
TN
MP
NT
RM
RS
PO
CV
DF Document front sensor (CCD model only)
Document front sensor 1 (CIS model only)
DR
DL
Document front sensor 2 (CIS model only)
DS
FC
FH Document scanner home position sensor
AC ADF cover open sensor (CIS model only)
AS
(2) Change the detecting conditions to check that the indication on the LCD changes
according to the sensor states. For instance, insert paper through the document front
(or rear) sensor or the registration sensor (s), open the front cover or the document
cover, remove the toner cartridge, jam paper at the paper outlet, insert paper from the
manual feeder, and load a recording paper tray, etc.
Low
OFF
Low
Sensors
Tray1 sensor
Tray1 paper sensor
Tray2 sensor
Tray2 paper sensor
Tray2 connect sensor
Tray3 connect sensor
Back cover sensor
Toner sensor
Multi-purpose tray sensor
New toner sensor
Front registration sensor
Rear registration sensor
Paper ejection sensor
Front cover sensor
Document rear sensor
ADF document separation sensor/
Size sensor (CCD model only)
ADF document switch back sensor
FB cover sensor
Paper eject sensor (CIS model only)
400 Hz
Medium High
OFF
1100 Hz
Medium High
Recording paper detected.
Recording paper detected.
Tray3 connected. (Not used)
Recording paper detected.
Scanner module home position detected.
7-23
Sensing status
Tray installed.
Tray installed.
Tray2 connected.
Back cover detected.
(Tray detected.)
Toner detected.
New toner detected.
No paper detected.
No paper detected.
No paper detected.
Front cover detected.
No document detected.
No document detected.
No document detected.
Document detected.
No document detected.
No document detected.
Document cover closed.
ADF cover closed.
Document detected.
Confidential