Because the distance between the multi sensor (in the carriage unit) and the nozzles (in the printhead) is varied from one unit to another, the printer as shipped has

its optical axis corrected to adjust the image write position. When the carriage unit or multisensor has been replaced or disassembled and reassembled, they require

adjustment.

Execute service mode under the following conditions:

* The multi sensor reference plate(QL2-6891: MOUNT, MULTI SENSOR REFERENCE) must be replaced at the same time whenever the carriage or the multi

sensor is being replaced.

1) Carry out the following service mode without media loading.

- Service mode : SERVICE MODE > ADJUST > GAP CALIB.

2) Load the following media.

Media type : Photo glossy paper

Media size : Media having a width equal too larger than that of A2-size paper

3) Carry out the following service mode.

- Service mode : SERVICE MODE > ADJUST > PRINT PATTERN > OPTICAL AXIS

- After the carriage unit or carriage motor or carriage belt or linear encoder sensor have been removed or replaced, execute the following service mode.

Service mode: SERVICE MODE > ADJUST > CR MOTOR COG

c) Precautions against handling the carriage shaft

The carriage shaft is functionally important part. Therefore, be sure to note the following points.

- Do not touch the shaft.

- Do not allow the shaft to get scratched or marked.

- Do not apply the grease to the shaft.

F-4-55

Chapter 4

4-25

Table of Contents