The optical axis is compensated at factory shipment in order to adjust the non-discharge detection position because there are fluctuations among machines in the

distance between the head management sensor and carriage unit. Therefore, adjustment must be made when the head management sensor is replaced or

disassembling/assembling components that may cause error in the distance between the head management sensor and carriage unit.

Enter the service mode as follows:

SERVICE MODE > ADJUST > NOZZLE CHK POS. > YES

4.3.13 multi sensor

a) Removing the multi sensor

(1) The head holder is opened.

See:

"Disassembly/Reassembly" > "Points to Note on Disassembly/Reassembly" > "Carriage unit" > "d. Removing the head holder"

(2) Remove the screw[1], disconnect the flexible cable[2], and then remove the multi sensor[3].

Since multi sensors have individual electrical specificity, the following are recalibrated at the factory, namely, the optical axis of the sensor, the sensor gain for

measuring the printhead height and color reproduction. Accordingly, carry out the following adjustments in the service mode whenever replacing the carriage unit

or multi sensor.

* The multi sensor reference plate must be replaced at the same time whenever the carriage or the multi sensor is being replaced.

* When replacing the carriage unit, refer to Adjustment and Setup > Procedure after Removing or Replacing the Carriage Unit.

- Service mode : SERVICE MODE > ADJUST > GAP CALIB

[3]

[2]

F-4-32

[2]

[3]

[1]

F-4-33

[1]