Canon iPF750 series, Service Manual

Page: 180 / 328

Chapter 4
4-24
b) Action following the replacement of the carriage unit/multi sensor
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(QL2-3160: MOUNT, MULTI SENSOR REFERENCE) must be replaced at the same time whenever the carriage or the multi
sensor is being replaced.
- Service mode : SERVICE MODE > ADJUST > GAP CALIB.
- Service mode : SERVICE MODE > ADJUST > PRINT PATTERN > OPTICAL AXIS
Media type : Photo glossy paper
Media size : Media having a width equal toor larger then that of A2-size paper
- 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.