Sensor Operational Check (Maintenance Mode 32) - Brother MFC-J3520 Service Manual

1.3.11 Sensor Operational Check (Maintenance mode 32)

< Function >
This function checks whether sensors work normally.
< Operating Procedure >
(1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode.
The machine sounds 1,100 Hz and 400 Hz tone signals cyclically for testing the
speaker.
Note: To stop beeping, press the SET key.
If the sensing statuses are as defined below, the LCD shows the 1st sensor group
"DFDRCVRSCCP1**AC."
(2) Press the Mono Start key to switch to the next sensor group.
If asterisks (**) appear on the LCD, it means that the corresponding sensor does
not exist on the model.
Given below is the relationship between the LCD indication, sensor name and sensor
status.
LCD
DF Document detection sensor
DR Document scanning position sensor
CV Document scanner sensor
RS Registration sensor
CC Ink cartridge cover sensor
P1 Purge cam sensor
AC ADF cover sensor
IK Black ink cartridge detection sensor
IY Yellow ink cartridge detection sensor
IC Cyan ink cartridge detection sensor
IM Magenta ink cartridge detection sensor
EK Black ink remaining sensor
EY Yellow ink remaining sensor
EC Cyan ink remaining sensor
EM Magenta ink remaining sensor
PP Switchback sensor
A3 Document width sensor
RB Second side document scanning
position sensor
VT Head thermistor
T1 High temperature detector in the
complex IC (for main PCB)
Sensors
5-22
Sensing status (display/no display)
No document/Document present
No document/Document present
Cover closed/Cover opened
No recording paper/
Recording paper present
Cover closed/Cover opened
Origin/Out of origin
Cover closed/Cover opened
Cartridge present/No cartridge
Cartridge present/No cartridge
Cartridge present/No cartridge
Cartridge present/No cartridge
Ink present/No ink
Ink present/No ink
Ink present/No ink
Ink present/No ink
No recording paper/
Recording paper present
No document (A3)/
Document present (A3)
No document/Document present
Normal temperature/Abnormal
temperature
Normal temperature/Abnormal
temperature
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