L120 Revision A
Adjustment Required Adjustments 44
Confidential
Table 3-1. Required Adjustment List
Adjustment Type Mechanism adjustment Adjustment using the Adjustment Program
Priority 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Adjustment Item
Checking the
Platen Gap
CR/PF Belt
tension check
EEPROM
data copy
Initialize Setting
(Including the MAC
address setting)
Ink charge Head ID input
Maintenance
counter
PF/EJ adjustment Bi-D adjustment
Head angular
adjustment
First dot position
adjustment
TOP margin
adjustment
PF deterioration
offset
CR motor heat
protection control
PF motor heat
protection control
Purpose
Check if the PG is
within the standard.
Check the tension of
the CR Timing Belt
and PF Timing Belt.
To copy adjustment
values or the like
stored on the old
Main Board to the
new board when the
Main Board needs to
be replaced.
To write sale-
destination-specific
settings and the serial
number into the Main
Board after replacing
it. And also to set the
MAC address as
necessary.
To fill ink inside the
new Printhead to
make it ready for
print after replacing
the Printhead.
To correct
characteristic
variation of the
replaced Printhead
by entering its
Printhead ID (Head
ID).
To reset the waste
ink counter after
replacing the Waste
Ink Pad Assy.
To correct variations
in paper feed
accuracy to achieve
higher print quality.
To correct print start
timing in
bidirectional
printing through
software control.
To correct tilt of the
Printhead caused at
the installation
through software
control.
To correct the print
start position in the
CR Unit moving
direction through
software control.
This corrects top
margin of printout.
To reset the counter
or set it to its
maximum according
to the replaced parts.
To measure and
correct the electrical
variation of the
motor and the power
supply board.
To measure and
correct the electrical
variation of the
motor and the power
supply board.
Part Name
Waste Ink
Pad Assy
Remove
--- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Replace
--- --- --- --- --- --- O --- --- --- --- --- --- --- ---
Retard
Roller Assy
Remove
--- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Replace
--- --- --- --- --- --- --- --- --- --- --- O --- --- ---
PS Unit
Remove
--- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Replace
--- --- --- --- --- --- --- --- --- --- --- --- --- O O
Paper Guide
Upper Assy
Remove
--- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Replace
--- --- --- --- --- --- --- O O --- --- O --- --- ---
PF Roller
Unit
Remove
--- O --- --- --- --- --- --- --- --- --- --- --- --- ---
Replace
--- O --- --- --- --- --- O O --- O O --- --- ---
PF Motor
Assy
Remove
--- O --- --- --- --- --- --- --- --- --- --- --- --- ---
Replace
--- O --- --- --- --- --- O --- --- --- O O --- O
CR Timing
Belt
Remove
--- O --- --- --- --- --- --- --- --- --- --- --- --- ---
Replace
--- O --- --- --- --- --- --- --- --- --- --- --- --- ---
Printout pattern
--- --- --- --- --- --- --- --- --- ---
How to judge
See " 3.3.1 Checking
the Platen Gap
(p48)" for the
details.
See " 3.3.2 CR/PF
Belt Tension Check
(p50)" for the
details.
--- --- --- --- ---
Normal area
pattern
Examine the
printout patterns
and enter the value
for the pattern
with fewest lines.
Bottom area
pattern
Examine the
printout patterns
and enter the value
for the pattern
with no overlap
and gap between
the two rectangles.
Examine the
printout patterns for
each of the four
modes, and enter the
value for the pattern
with no gap and
overlap for each
mode.
Enter the values of
the most straight
lines.
Examine the
misaligned lines
printed on the left
side of the paper,
and enter the
number beside the
line that is exactly 5
mm away from the
paper edge.
Examine the
misaligned lines
printed on top of the
paper, and enter the
number beside the
line that is exactly 5
mm away from the
paper edge.
---
See " 3.2.2.1 CR
Motor Heat
Protection Control /
PF Motor Heat
Protection Control
(p47)" for the
details.
See " 3.2.2.1 CR
Motor Heat
Protection Control /
PF Motor Heat
Protection Control
(p47)" for the
details.
Adjustment program
------ OOOOOOOOOOOOO
Tool
See p48
See p50
--- --- --- --- --- --- --- --- --- --- --- --- ---
Note "*1": Necessary when the part is replaced at a point in the disassembly procedures other than specified in this manual.
"*2": Replacement of Waste Ink Pad Assy is necessary.
"*3": Perform PF Belt tension check only.
"*4": Perform CR Belt tension check only.
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Paper Handling
Electrical Specifications
