Canon iP6220D - PIXMA Color Inkjet Printer User manual

PIXMA iP6220D
SERVICE MANUAL
Revision 0
QY8-13AD-000
COPYRIGHT©2005 CANON INC. CANON PIXMA iP6220D 082005 XX 0.00-0

Scope
This manual has been issued by Canon Inc., to provide the service technicians of this product with the information
necessary for qualified persons to learn technical theory, installation, maintenance, and repair of products. The manual
covers information applicable in all regions where the product is sold. For this reason, it may contain information that is
not applicable to your region.
Revision
This manual could include technical inaccuracies or typographical errors due to improvements or changes made to the
product. When changes are made to the contents of the manual, Canon will release technical information when
necessary. When substantial changes are made to the contents of the manual, Canon will issue a revised edition.
The following do not apply if they do not conform to the laws and regulations of the region where the manual or product
is used:
Trademarks
Product and brand names appearing in this manual are registered trademarks or trademarks of the respective holders.
Copyright
All rights reserved. No parts of this manual may be reproduced in any form or by any means or translated into another
language without the written permission of Canon Inc., except in the case of internal business use.
Copyright © 2005 by Canon Inc.
CANON INC.
Inkjet Device Quality Assurance Div. 1
451, Tsukagoshi 3-chome, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8530, Japan

I. MANUAL OUTLINE
This manual consists of the following three parts to provide information necessary to service the PIXMA iP6220D:
Part 1: Maintenance
Information on maintenance and troubleshooting of the PIXMA iP6220D
Part 2: Technical Reference
N
ew technology and technical information such as FAQ's (Frequently Asked Questions) of the PIXMA iP6220D
Part 3: Appendix
Block diagrams and pin layouts of the PIXMA iP6220D
Reference:
This manual does not provide sufficient information for disassembly and reassembly procedures. Refer to the graphics in
the separate Parts Catalog.

II. TABLE OF CONTENTS
Part 1: MAINTENANCE
1. MAINTENANCE
1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by
Service Engineer
1-2. Customer Maintenance
1-3. Product Life
1-4. Special Tools
1-5. Serial Number Location
2. LIST OF ERROR DISPLAY / INDICATIONS
2-1. Operator Call Errors
2-2. Service Call Errors
2-3. Warnings
2-4. Troubleshooting by Symptom
3. REPAIR
3-1. Notes on Service Part Replacement (and Disassembling / Reassembling)
3-2. Special Notes on Repair Servicing
3-3. Adjustment / Settings
(1) Paper feed motor adjustment
(2) Main chassis and carriage rail adjustment
(3) Grease application
(4) Waste ink counter setting
(5) User mode
(6) Service mode
3-4. Verification Items
(1) Service test print
(2) EEPROM information print

Part 2: TECHNICAL REFERENCE
1. NEW TECHNOLOGIES
2. CLEANING MODE AND AMOUNT OF INK PURGED
3. PRINT MODE
3-1. Resolution in Printing via Computer (Print on One or Both Sides of Paper, Photo and CL
Cartridges, Color Mode)
3-2. Resolution in Printing via Computer (Print on One or Both Sides of Paper, CL Cartridge, Color or
Monochrome Mode)
3-3. Resolution in Borderless Printing (Print on One or Both Sides of Paper, Photo and CL Cartridges,
Color Mode)
3-4. Resolution in Borderless Printing (Print on One or Both Sides of Paper, CL Cartridges, Color or
Monochrome Mode)
3-5. Resolution in Direct Printing
4. FAQ (Problems Specific to the iP6220D and Corrective Actions)
Part 3: APPENDIX
1. BLOCK DIAGRAM
2. CONNECTOR LOCATION AND PIN LAYOUT
2-1. Main Board
2-2. Operation Panel Board L
2-3. Operation Panel Board R
2-4. Card Slot Board (Card Slot Unit)
2-5. Carriage Board (Print Head Connector)
3. SPECIFICATIONS

Part 1
MAINTENANCE
󲩷

1. MAINTENANCE
1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and
Replacement Consumables by Service Engineer
(1) Adjustment
*1: Red screws of paper feed motor
The red screws securing the paper feed motor may be loosened only at replacement of the paper feed motor unit.
(2) Periodic maintenance
No periodic maintenance is necessary.
(3) Periodic replacement parts
There are no parts in this machine that require periodic replacement by a service engineer.
(4) Replacement consumables
There are no consumables that require replacement by a service engineer.
Adjustment Timing Purpose Tool Approx.
time
EEPROM
initialization
(EEPROM
settings)
At logic board ass'y replacement To initialize settings other than
the following:
- USB serial number
- Destination setting
- Waste ink counter
None. 1 min.
Destination
settings
(EEPROM
settings)
At logic board ass'y replacement To set the destination. None. 1 min.
LCD language
settings At logic board ass'y replacement To set the language to be displayed on the LCD. None. 1 min.
Waste ink
counter
resetting
(EEPROM
settings)
- At bottom case unit
replacement
- At ink absorber replacement
To reset the waste ink counter. None. 1 min.
Print head
alignment - At printer setup
- At print head replacement
- At logic board ass'y
replacement
- At carriage unit replacement
To ensure accurate dot
placement. - Machine buttons
(Auto/Manual)
- Computer
(settings via the
printer driver)
(Auto/Manual)
Auto:4
min.
Manual:3
min.
Paper feed
motor position
adjustment*1
At paper feed motor unit
replacement To adjust the belt tension. (Position the paper feed motor so
that the belt is stretched tight.)
None. 2 min.
Grease
application - At carriage unit replacement
- At bottom case unit
replacement
- At platen replacement
- At eject roller replacement
- At cap blade unit replacement
-
- To maintain sliding properties
of the carriage, cap blade unit,
and eject rollers.
- FLOIL KG-
107A (QY9-
0057)
- MOLYKOTE
PG641 (CK-
0562)
1 min.
1-1

1-2. Customer Maintenance
1-3. Product Life
(1) Machine
Specified print volume (I) or the years of use (II), whichever comes first.
(I) Print volume
(II) Years of use
5 years of use
(2) Ink cartridge (ink tank with nozzles) (target value)
CL-52: 450 pages (1,500 character pattern / plain paper / standard mode)
710 pages (ISO JIS-SCID No. 5 / plain paper / standard mode)
CL-51: 330 pages (ISO JIS-SCID No. 5 / plain paper / standard mode)
CL-52: 110 pages (24 photos taken by a digital camera / borderless printing / SP-
101 4x6 / standard mode)
CL-51: 180 pages (24 photos taken by a digital camera / borderless printing / SP-
101 4x6 / standard mode)
Adjustment Timing Purpose Tool Approx.
time
Print head
alignment When print quality is not satisfying.
When printer is set up.
To ensure accurate dot
placement. - Machine buttons
(Auto/Manual)
- Computer (settings
via the printer
driver)
(Auto/Manual)
Auto:4
min.
Manual:3
min.
Print head
cleaning When print quality is not satisfying. To improve nozzle conditions. - Machine button
- Computer (settings
via the MP driver)
1 min.
Print head deep
cleaning When print quality is not satisfying, and not improved by
print head cleaning.
To improve nozzle conditions. - Machine button
- Computer (settings
via the MP driver)
2 min.
Ink cartridge
replacement When an ink cartridge becomes empty. (No ink error) ----- ----- 2 min.
Paper feed roller
cleaning When paper does not feed
properly. To clean the paper feed rollers. Machine button 2 min.
Bottom plate
cleaning When the back side of the paper is smeared To clean the platen ribs. - Machine button
- Computer (settings
via the MP driver)
1 min.
6,600 pages
Black 1,500 character pattern 1,300 pages
Color A4, 7.5% duty per color pattern 1,000 pages
A4, 30 % duty per color pattern 1,000 pages
4 x 6, 30 % duty per color pattern 3,000pages
Postcard, 30 % duty per color pattern 300 pages
1-2

1-4. Special Tools
1-5. Serial Number Location
On the chassis (visible when the front cover is open).
Name Tool No. Application Remarks
MOLYKOTE
PG-641 QY9-0035-000 To be applied to the chassis. In common with
other models.
FLOIL
KG-107A QY9-0057-000 To be applied to the sliding portion of
the carriage, and the platen link. In common with other models.
To the table of contents To the top
<Part 1: 1.MAINTENANCE>
1-3

2. LIST OF ERROR DISPLAY / INDICATIONS
Errors and warnings are displayed by the following ways:
1) Operator call errors are indicated by the Alarm LED lit. (In the service mode, the Alarm LED blinks to indicate
errors.)
Service call errors are indicated by the number of cycles the Alarm and Power LEDs blink.
2) Errors and warnings are displayed on the LCD on the operation panel.
3) Warnings are displayed on the MP driver Status Monitor.
2-1. Operator Call Errors (by Alarm LED Lit in Orange)
LCD Message
Alarm LED
blinking in
orange (in the
service mode
only)
Error [Error code] Solution Remarks
There is no paper.
Load paper and press
[OK].
2 times No paper. (ASF)
[1000] Set the paper in the ASF, and press the OK button.
The paper is jammed.
Clear the paper and
press [OK].
3 times Paper jam. [1300] Remove the jammed
paper, and press the OK
button.
Ink has run out.
Replace the ink
cartridge and close
the cover.
U041
-No ink. [1600] Replace the empty ink
cartridge(s), or press the
OK button.
Pressing the OK button will
exit the error without ink
cartridge replacement,
however, ink may run out
during printing.
The following ink
cartridge cannot be
recognized.
U051 / U059
5 times Ink cartridge not
installed. [1401]
Ink cartridge not for
this model installed.
[1485]
Confirm that the ink
cartridges are for this
model, install them
properly, then close the
front cover.
The following ink
cartridge cannot be
recognized.
U052
15 times Ink cartridge not
installed. [1682] Re-install the applicable ink cartridge(s) properly,
and close the front cover.
Or, with the ink
cartridges installed, turn
the machine off and on
again.
The following ink
cartridge cannot be
recognized.
U140
-Ink cartridge not for
this model installed.
[1684]
Confirm that the ink
cartridges are for this
model, install them
properly, then close the
front cover.
Some ink cartridge
are not installed in
place.
U075
7 times Multiple ink cartridges
of the same color
installed. [1687]
Replace the wrong ink
cartridge with the correct
one.
Some ink cartridge
are not installed in
place.
U076
7 times Ink cartridge in a
wrong position. [1686] Install the ink cartridge in the correct position.
The following ink
cartridge cannot be
recognized.
U053
4 times Improper installation
of an ink cartridge.
[1687]
Re-install the applicable
ink cartridge(s) properly,
and close the front cover.
The waste ink -Warning: The waste Pressing the OK button The service call error,
1-4

*1: The main waste ink absorber is separate from the platen waste ink absorber. In servicing, replace the waste ink
absorber which becomes full.
[See Section 3-3. Adjustment / Settings, (6) Service mode, for details.]
absorber is almost
full.
Press [OK] to
continue but early
replacement
recommended. <See
manual>
ink absorber becomes
almost full.
[1700 for the main
waste ink absorber,
1710 for the platen
waste ink absorber]
will clear the error, and
enable printing.
At repair*1:
For main waste ink
absorber replacement,
replace
- the bottom case unit, or
- the ink absorber kit
For platen ink absorber
replacement,
replace
- the ink absorber , and
- the ink absorber kit
MP450: QY5-0151).
indicating the waste ink
absorber is full, is likely to
occur soon.
Incompatible device
detected.
Remove the device.
-The connected digital
camera or digital video
camera does not
support Camera Direct
Printing. [2001]
Remove the cable
between the camera and
the machine, press the
Stop/Reset button, then
re-connect the cable.
The following ink
may have run out.
U161
An ink cartridge that
was once empty is
installed.
U162
-Remaining ink amount
unknown. [1685/1686] A once-used ink
cartridge (except the one
which has been used
until just before
replacement) is installed.
Replace the applicable
ink cartridge with a new
one, or press the OK
button.
Pressing the OK button will
exit the error without ink
cartridge replacement,
however, the function to
detect the remaining ink
amount is disabled.
Auto head align has
failed. Press [OK] and
repeat operation.
<See manual>
-Failed in automatic
print head alignment. Press the OK button to exit the error, confirm
the following, then do
the print head alignment
again:
- Set A4 or LTR size
plain paper.
- If the ink nozzles are
clogged, cleaning the
ink cartridge.
- If the paper output slot
has been exposed to a
strong light, move the
printer to a darker
location.
Press the Stop/Reset button.
- If paper is being fed at
error occurrence, the error
is indicated after the paper
is ejected.
- If the error occurs, the print
head alignment values are
not changed.
- After exit from the error by
the Stop/Reset button, the
automatic print head
alignment will not be re-
done.
Cover is open. -Front cover open.
[1200] Close the front cover.
1-5

2-2. Service Call Errors (by Cyclic Blinking in Orange (Alarm LED) and Green
(Power LED), or Alarm LED Lit in Orange)
*1: Before replacement of the logic board ass'y, check the waste ink amount, and re-set the waste ink amount value
in the replaced logic board.
[See Section 3-3. Adjustment / Settings, (6) Service mode, for details.]
*2: The main waste ink absorber is separate from the platen waste ink absorber. In servicing, replace the waste ink
absorber which becomes full.
[See Section 3-3. Adjustment / Settings, (6) Service mode, for details.]
*3: Reset the waste ink counter when replacing the bottom case unit. The main and platen waste ink counters can be
reset separately.
[See Section 3-3. Adjustment / Settings, (6) Service mode, for details.]
Cycles of blinking in
orange (Alarm LED) and
green (Power LED) Error [Error code] Solution
(Replacement of listed parts, which are
likely to be faulty)
2 times Carriage error [5100] - Carriage unit (QM2-3332)
- Timing slit strip film (QC1-6015)
- Logic board ass'y (QM2-2840)*1
- Carriage motor (QM2-2865)
3 times Paper feed error [6000] - Timing sensor ass'y (QM2-2850)
- Timing slit disk film (QC1-4962)
- Feed roller ass'y (QL2-1284)
- Platen (QC1-7503)
- Logic board ass'y (QM2-2840)*1
- Paper feed motor (QM2-2866)
4 times Purge unit error [5C00] - Carriage unit (QM2-3332)
- Timing slit strip film (QC1-6015)
- Logic board ass'y (QM2-2840)*1
- Carriage motor (QM2-2865)
5 times ASF (cam) sensor error [5700] - Drive ass'y (QM2-3333)
- PE sensor ass'y (QM2-2855)
- Pressure roller ass'y (QM2-3337)
6 times Internal temperature error [5400] - Logic board ass'y (QM2-2840)*1
7 times Waste ink absorber full [5B00]*2 Main waste ink absorber:
- Bottom case unit (QM2-3321)*3
- Ink absorber kit (QY5-0148)
Platen waste ink absorber:
- Ink absorber (QC1-6014)
- Ink absorber kit (QY5-0148)
8 times Cartridge temperature rise error [5200] - Print head
- Logic board ass'y (QM2-2840)*1
9 times EEPROM error [6800] - Logic board ass'y (QM2-2840)*1
13 times Paper feed position error [6B00] - Paper feed motor (QM2-2866)
- Logic board ass'y (QM2-2840)*1
15 times USB Host VBUS overcurrent [9000] - Logic board ass'y (QM2-2840)*1
17 times Motor driver error [6D00] - Logic board ass'y (QM2-2840)*1
20 times Other hardware error [6500] - Logic board ass'y (QM2-2840)*1
Continuous alternate
blinking ROM error - Logic board ass'y (QM2-2840)*1
Lights in orange RAM error - Logic board ass'y (QM2-2840)*1
1-6

2-3. Warnings
Machine (displayed on the LCD):
*1: If the warning is displayed, the carriage does not move to the ink cartridge replacement position when the
scanning unit is opened.
2-4. Troubleshooting by Symptom
Displayed warning Remarks
Low ink
Print head temperature rise If the print head temperature is high when the scanning unit is opened, the
warning is displayed.*1
When the print head temperature falls, the warning is released.
Protection of excess rise of the print head
temperature If the print head temperature exceeds the specified limit, a Wait is inserted during printing,
Symptom Solution Remarks
Faulty operation
The power does not turn on.
The power turns off immediately
after power-on.
Replace the
- AC adapter, or
- logic board ass'y*1.
Strange noise. Remove foreign material, or attach a
removed part if any.
Printing stops mid-way. Replace the logic board ass'y*1.
Nothing is displayed on the LCD. - Confirm the connection of the LCD,
operation panel, and the logic board
ass'y.
- Replace the
- LCD, or
- logic board ass'y.
A portion of the LCD is not
displayed. - Perform the button and LCD test in the service mode, and confirm that the
LCD is displayed without any
segments missing.
- Confirm the connection of the LCD,
operation panel, and the logic board
ass'y.
- Replace the
- LCD, or
- logic board ass'y.
Paper feed
problems
Multiple sheets feed. Replace the
- drive unit, or
- pressing plate ass'y.
Paper does not feed. Remove foreign material, or replace the
- drive unit, or
- pressing plate ass'y.
Paper feeds at an angle. Remove foreign material, or adjust the
paper guide, or replace the
- drive unit, or
- pressing plate ass'y.
No printing, or no color ejected. Replace the
- ink cartridge*2,
- logic board ass'y*1,
1-7

*1: Before replacement of the logic board ass'y, check the waste ink amount, and re-set the waste ink amount value
on the replaced logic board.
[See Section 3-3. Adjustment / Settings, (6) Service mode, for details.]
*2: Replace the print head only after the print head deep cleaning is performed 2 times, and when the problem
persists.
Unsatisfactory
print quality
- drive unit, or
- cap blade unit.
Printing is faint, or white lines appear
on printouts even after print head
cleaning.
Line(s) not included in the print data
appears on printouts.
Remove and re-install the ink
cartridges, or replace the
- ink cartridge*2,
- cap blade unit,
- purge unit, or
- logic board ass'y*1.
Paper gets smeared. Feed several sheets of paper,
perform bottom plate cleaning, or
clean the paper path with cotton swab or
cloth.
A part of a line is missing on
printouts. Replace the ink cartridge(s)*2.
Color hue is incorrect. Replace the ink cartridge*2, or
perform print head alignment.
Printing is incorrect. Replace the logic board ass'y*1.
No ejection of black ink. Replace the ink cartridge(s)*2.
Graphic or text is enlarged on
printouts. When enlarged in the carriage movement direction, clean grease or oil
off the timing slit strip film, or replace
the
- timing slit strip film,
- carriage unit, or
- logic board ass'y*1.
When enlarged in the paper feed
direction, clean grease or oil off the
timing slit disk film, or replace the
- timing slit disk film,
- timing sensor unit, or
- logic board ass'y*1.
To the table of contents To the top
<Part 1: 2. LIST OF ERROR DISPLAY / INDICATION>
1-8

3. REPAIR
3-1. Notes on Service Part Replacement (and Disassembling / Reassembling)
Service part Notes on replacement*1 Adjustment / settings Operation check
Logic board ass'y
QM2-2840 - Before removal of the logic
board ass'y, remove the
power cord, and allow for
approx. 1 minute (for
discharge of capacitor's
accumulated charges), to
prevent damage to the logic
board ass'y.
- After replacement, reset the
waste ink amount data in the
replaced logic board ass'y.
[See 3-3. Adjustment /
Settings, (6) Service mode, for
details.]
After replacement:
1. Initialize the EEPROM.
2. Set the destination in the
EEPROM.
3. Set the LCD language.
[See 3-3. Adjustment /
Settings, (6) Service mode,
for details of 1 to 4.]
4. Perform the print head
alignment in the user
mode.
- EEPROM information
print
- Service test print
- Printing via parallel or
USB connection
- Direct printing from a
digital camera
- Direct printing from a
memory card
- Print Beam printing
Bottom case unit
QM2-3321 Main platen waste ink
absorber After replacement:
1. Reset the main waste ink
counter.
[See 3-3. Adjustment /
Settings, (6) Service
mode.]
2. Adjust the head-to-paper
distance.
[See 3-3. Adjustment /
Settings, (6) Service
mode.]
- Service test print
- Printing on thick paper
Ink absorber
QY5-0148
Carriage unit
QM2-3332 The red screws on both sides
of the main chassis securing
the carriage shaft are allowed
to be loosened only when
replacing the carriage or
removing the main chassis.
Before removing the screws,
mark the original screw
position, and re-fasten them at
the original position.
At replacement:
1. Apply grease to the sliding
portions.
[See 3-3. Adjustment /
Settings, (3) Grease
application.]
2. Adjust the distance between
the carriage shaft and the
platen.
[See 3-3. Adjustment /
Settings, (2) Main chassis
and carriage rail
adjustment.]
3. Perform the print head
alignment in the user
mode.
- Printing on thick paper
Paper feed motor unit
QM2-2866 - The red screws securing the
p
aper feed motor are allowed
to be loosened. (DO NOT
loosen any other red screws.)
At replacement:
1. Adjust the paper feed
motor.
[See 3-3. Adjustment /
Settings, (1) Paper feed
motor adjustment.]
Timing slit strip film
QC1-6015 - Upon contact with the film,
wipe the film with ethanol.
- Confirm no grease is on the
film. (Wipe off any grease
thoroughly with ethanol.)
- Do not bend the film
After replacement:
1. Perform the print head
alignment in the user
mode.
- Service test print
Timing slit disk film
QC1-4962
1-9

*1: General notes:
- Make sure that the flexible cables and wires in the harness are in the proper position and connected correctly.
[See 3-2. Special Notes on Repair Servicing, (1) Flexible cable and harness wiring, connection, for details.]
- Do not drop the ferrite core, which may cause damage.
- Protect electrical parts from damage due to static electricity.
- Before removing a unit, after removing the power cord, allow the machine to sit for approx. 1 minute (for
capacitor discharging to protect the logic board ass'y from damages).
- Do not touch the timing slit strip film and timing slit disk film. No grease or abrasion is allowed.
- Protect the units from becoming soiled with ink.
- Protect the housing from scratches.
- Exercise caution with the red screws, as follows:
i. The red screws of the paper feed motor may be loosened only at replacement of the paper feed motor
unit (DO NOT loosen them in other cases).
ii. Except for carriage replacement, DO NOT loosen the red screws (which secures the carriage shaft
positioning) on both sides of the main chassis.
After replacement of the carriage, print on thick paper to confirm that the distance between the
carriage shaft and the platen is proper, and there is no contact of the ink cartridges to the paper.
If the ink cartridges contact the paper, adjust the carriage shaft, while referring to [3-3. Adjustment /
Settings, (2) Main chassis and carriage rail adjustment.]
To the table of contents To the top
<Part 1: 3. REPAIR, 3-1>
1-10

3-2. Special Notes on Repair Servicing
(1) Flexible cable and harness wiring, connection
Be careful of wiring of the flexible cables and harness. Improper wiring or connection may cause breakage of a
line, leading to ignition or emission of smoke.
1-11

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<Part 1: 3. REPAIR, 3-2>
1-12

3-3. Adjustment / Settings
(1) Paper feed motor adjustment
Perform the following adjustments when the paper feed motor unit is replaced:
1) When removing the screws, mark the screw hole.
2) When installing the motor, position each screw to the mark, and fasten them.
3) After replacement, be sure to perform the service test print, and confirm that no strange noise or faulty print
operation (due to dislocation of the belt or gear, or out-of-phase motor, etc.) occurs.
Note: The red screws securing the paper feed motor may be loosened only at replacement of the paper feed motor
unit. DO NOT loosen them in other cases.
(2) Main chassis and carriage rail adjustment
[Carriage rail adjustment]
Perform the following adjustments when the carriage unit is replaced:
1) Before loosening the red screws, mark the boss position beside the screw.
2) In attaching the carriage rail, make sure that the boss fits into the hole and to the mark made in step 1), then
fasten the screws.
3) Be sure to perform the confirmation test detailed below; confirm that the print quality is proper and the ink
cartridges are not contacting the paper.
1-13

[Main chassis adjustment]
After installing the main chassis, be sure to perform the confirmation test detailed below; confirm that the print
quality is proper and the ink cartridges are not contacting the paper.
<Confirmation test>
Using Photo Paper Pro, and with the paper thickness lever set to the left position (normal position), print an image
and confirm that the print quality is proper, and the ink cartridges are free from contacting the paper.
If the print quality is not proper, or an ink cartridge contacts the paper, adjust the head-to-paper distance in the
following procedures:
Procedures for adjusting the head-to-paper distance:
i) At the bottom edge of the boss beside the red screw on each side of the chassis, put a mark to indicate the current
position. (See the step 1 of the carriage rail adjustment above.)
ii) Loosen the red screws, and adjust the head-to-paper distance.
- To prevent the ink cartridges from contacting the paper: Raise the carriage rail from the current position.
- To improve the print quality: Lower the carriage rail from the current position.
1-14