Sensor Operational Check (Function Code 32) - Brother MFC5890CN Service Manual

9.4.9 Sensor Operational Check (Function code 32)

Function
This function allows you to check the following:
• Document front sensor
• Document rear sensor
• Scanner cover sensor
• Registration sensor
• Ink cartridge cover sensor
• Purge cam switch
• Cap lift cam switch
• Ink cartridge detection sensors (black, yellow, cyan, and magenta)
• Ink empty sensors (black, yellow, cyan, and magenta)
• Head thermistor (in the head driver chip)
• Casing internal temperature thermistor
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 or OK key.
If the sensing statuses are as listed on the next page, the LCD will show
"DFDRCVRSCCP1CP**," "IKIYICIMEKEYECEM," and "********VT CRTH," which
can be switched by pressing the Black Start (Mono Start) key.
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