Sensor Operational Check (Function Code 32) - Brother DCP6690CW 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)
• Document width sensor
• Head thermistor (in the head driver chip)
• Casing internal temperature thermistor (in the complex IC)
• Switchback paper detection sensor (for duplex print models)
• DX cover sensor (for duplex print models)
• DX cam switch (for duplex print models)
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, in models without touch panel, press the Menu or OK key; in
models with touch panel, press the Photo Capture key.
If the sensing statuses are as listed on the next page, the LCD shows
"DFDRCVRSCCP1CP
"PPRRDX
Start) key.
" and "IKIYICIMEKEYECEM," or "B4
**
*
," which can be switched by pressing the Black Start (Mono
**********
9-20
VT CRTH" and
****
* For duplex print models
Confidential