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Chapter 4

4-27

F-4-55

4.5 Adjustment and Setup Items

4.5.1 Action to take after replacing the feed roller HP sensor, feed roller encoder, or feed roller

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Action to take after replacing the feed roller HP sensor, feed roller encoder or feed roller

Feed roller eccentricity is factory-adjusted (correction of variation in the paper feed amount per rotation). It is necessary to adjust feed roller eccentricity after re-

placing the feed roller HP sensor, feed roller encoder or feed roller.

In the service mode, perform automatic adjustment of feed roller eccentricity.

Service mode : SERVICE MODE > ADJUST > PRINT PATTERN > LF TUNING

Media type : Photo glossy paper

4.5.2 Action to take after replacing the carriage unit or multi sensor

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a) Note on replacing the carriage unit and the multi sensor

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

b) Multi Sensor Recalibration

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

axis corrected and paper gap adjustment sensor gain and calibration adjusted prior to shipment. When the carriage unit or multi sensor has been replaced, they

should require adjustment.

Execute service mode under the following conditions to launch automatic adjustment:

1) Optical axis correction

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

Media type: Gloss photo paper

2) Paper gap adjustment

- Service mode: SERVICE MODE > ADJUST > GAP CALIB

3) Sensor correction for calibration

- Service mode: SERVICE MODE > ADJUST > SENSOR CALIB

4.5.3 Action to take after replacing the head management sensor

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Since the distance between the head management sensor and the carriage unit varies among printers, the optical axis is factory-adjusted to adjust the non-discharging

detection position. When you have replaced the head management sensor or performed assembly/reassembly of surrounding parts that can change the distance be-

tween the head management sensor and the carriage unit, readjustment is required

Perform the readjustment in the service mode.

Service mode : SERVICE MODE > ADJUST > NOZZLE CHK POS.

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