Canon iPF720 Service Manual page 177

c) ADJUST
Performs adjustments and prints the adjustment and check patterns necessary for adjusting the printer parts.
1) PRINT PATTERN
NOZZLE 1
NOZZLE 2
NOZZLE 3
OPTICAL AXIS
LF TUNING
LF TUNING 2
SENSOR CHECK
SENSOR CHECK are intended for factory adjustment purposes.
No adjustment by service personnel is required.
2) HEAD ADJ.
Set or initialize the registration adjustment values of each printheads.
Display
MANUAL HEAD ADJ
ADJ. SETTING
RESET SETTINGS
3) NOZZLE CHK POS.
This mode for adjusting the optical axis of the head management sensor. For details, refer to "Disassembly/Reassembly" > "Adjustment and Setup Items" > "Pro-
cedure after replacing the head management sensor".
4) GAP CLIB.
This mode measures the gap between the printhead and media by multi sensor and corrects the calibration value.
5) CHANGE LF TYPE
Change the type of the feed roller.
0: Old feed roller
1: New feed roller
Display
Prints the nozzle check pattern by single direction/ single pass without using the non-
discharging back up.
It is used to check for the non-discharging nozzles.
- Media size: A4
- Media type: any
Print a 100% solid print pattern (used to check the ink reaction that cannot be checked with
"NOZZLE 1") in the single path direction. Use this method when checking blocked nozzles.
- Use paper with a height equal to or longer than that of A4-sized paper (in portrait orientation).
- Any media type is acceptable.
Print a 100% solid print pattern (used to check the ink reaction that cannot be checked with
"NOZZLE 1") in the single path direction. Use this method when checking blocked nozzles.
(The print drive control method is different from that for "NOZZLE 2".)
- Use paper with a height equal to or longer than that of A4-sized paper (in portrait orientation).
- Any media type is acceptable.
Prints the pattern and adjusts the optical axis of the multi sensor.
For details, refer to "Disassembly/Reassembly" > "Adjustment and Setup Items" > "Procedure
after replacing the carriage unit or multi sensor".
- Media type: photo glossy paper
Carry out automatic correction of eccentricity of the feed roller. For more details, refer to
"Disassembly/Reassembly" > "Adjustment and Setup Items" > "Procedure after replacing the
feed roller and reed roller encoder".
- The media type is "gloss photo paper".
Carry out manual correction of eccentricity of the feed roller. For more details, refer to
"Disassembly/Reassembly" > "Adjustment and Setup Items" > "Procedure after replacing the
feed roller and reed roller encoder".
- The media type is "gloss photo paper".
* For Factory
DETAIL Prints the detail patterns for the manual head adjustment.
After printing, the mode will change to [ADJ. SETTING]. Check the printed patterns and input the set values.
BASIC Prints the basic patterns for the manual head adjustment.
After printing, the mode will change to [ADJ. SETTING]. Check the printed patterns and input the set values.
A to F A-1 to F-1 This mode is to input the registration adjustment values.
It is possible to return the values to the former one by printing the status print before changing the value.
SAVE SETTINGS Save the registration adjustment values that has been input.
Initialize the registration adjustment values (to 0).
T-7-12
Description
T-7-13
Description
Chapter 7
7-9