Sensor Check Mode 1; Sensor Check Mode 2; Head Stopper Height Check Mode; Carriage Control Parameter Adjustment Mode - Brother MP-21C Service Manual

3.2.2

Sensor Check Mode 1

After entering this mode, the functioning of the following sensors can be checked.
The respective LED indicates the status of the following sensors.
Sensor
ACSF sensor
Cover sensor
Ink cartridge BC sensor
Ink cartridge MY sensor
3.2.3

Sensor Check Mode 2

After entering this mode, the functioning of the following sensors can be checked.
The respective LED indicates the status of the following sensors.
Sensor
Paper eject sensor
Paper feed sensor
3.2.4 Head Stopper Height Check Mode (Not necessary for service, Factory use only)
This mode is used to measure and check the height of the head stopper, which is
attached to the head cap on the Purge unit ASSY.
3.2.5

Carriage Control Parameter Adjustment Mode

Immediately after entering this mode, the carriage speed auto-adjustment will be
executed and correct parameters will be set automatically. If any abnormal (too slow or
too fast)speed is detected, there will be a carriage speed auto-adjustment error indicated
by LED indication. Refer to section 3.3.2 Service Calls.
This adjustment must be carried out when the parts related to the carriage portion (listed
below) are replaced.
Ink head base unit, Print head, Carriage guide, Encoder strip
3.2.6 Purge Air Pressure Measure Mode (Not necessary for service, Factory use only)
The air pressure for rhe purge operation is measured in this mode.
This mode is used at the factory only and will not be necessary for the service.
3.2.7

Printer Setting Mode

The printer in this mode does not carry out the printer initialization and ignores any errors
occurring on the printer in order to keep the I/F communication alive.
The printer must enter this mode when you use the Service software tool utility. Before
you run the utility, make sure to put the printer in this mode.
LED
This LED will be on when the ACSF is attached.
This LED will be on when the Top cover is closed.
This LED will be on when the Ink cartridge BC is
installed.
This LED will be on when the Ink cartridge MY is
installed
LED
The LED will be on when there is no paper.
The LED will be on when there is no paper.
IV-12