Sensor Operational Check (Function Code 32) - Brother MFC-3340CN Service Manual

8.5.7 Sensor Operational Check (Function code 32)

n Function
This function allows you to check the following:
- Document front sensor
- Document rear sensor
- Cover open sensor
- Registration sensor
- Purge cam switch
- Black ink cartridge sensor
- Yellow ink cartridge sensor
- Cyan ink cartridge sensor
- Magenta ink cartridge sensor
- Head driver chip temperature sensor
- Hook switch sensor (FAX1940CN/1840C)
- Large-volume ink cartridge sensor
n Operating Procedure
(1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode.
The machine sounds 1100 Hz and 400 Hz tones cyclically through the following volumes for
testing the speaker:
NOTE: To stop beeping, press the Menu/Set key.
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