5-25
Confidential
*1 Duplex scanning models only
*2 Paper tray 2 models only
*3 MP tray models only
(3) Change the detecting conditions (e.g., insert paper through the registration sensor,
open the ink cartridge cover or document scanner, or remove the ink cartridges),
and then check that the indication on the LCD changes according to the sensor
states.
(4) Press the X key to stop this operation and return the machine to the initial stage of
the maintenance mode.
Locations of Sensors
Fig. 5-1
LCD Sensors Sensing status (display/no display)
RB
*1
Second side document scanning
position sensor
No document/Document present
VT Head thermistor Normal temperature/Abnormal temperature
T1 High temperature detector in the
complex IC (for main PCB)
Normal temperature/Abnormal temperature
Registration sensor
Purge cam sensor
Document
detection sensor
Head thermistor
MP paper
detection sensor
Paper tray 2
detection sensor
Document
scanner
sensor
High temperature detector in the complex IC
(for main PCB)
Ink cartridge cover
sensor
Switchback sensor
Magenta ink
cartridge detection
sensor
Magenta ink
remaining sensor
Cyan ink
remaining sensor
Yellow ink
remaining sensor
Black ink
remaining sensor
Cyan ink cartridge
detection sensor
Yellow ink cartridge
detection sensor
Black ink cartridge
detection sensor
Second side document
scanning position sensor
First side document
scanning position
sensor
ADF cover
sensor