Epson Artisan 730 - Adjustment Without Using Adjustment Program; PG Adjustment

Epson Artisan 810/835/837/710/725/730/Epson Stylus Photo PX810FW/TX810FW/PX820FWD/TX820FWD/PX830FWD/PX710W/TX710W/PX720WD/TX720WD/PX730WD/TX730WD Revision G
ADJUSTMENT Adjustment without Using Adjustment Program 229
Confidential
5.3 Adjustment without Using Adjustment Program
This section explains the adjustment procedure without using the adjustment program.
5.3.1 PG Adjustment/PG Inspection
5.3.1.1 PG Adjustment
Described below is the platen gap (PG) adjustment.
 Purpose:
Adjust the distance between the head surface and the Paper Guide Front Assy
(platen) properly and adjust the parallelism on the 0-digit side and on the 80-digit
side to ensure reliable print quality.
This adjustment is carried out when the position of the notch on the Parallelism
Adjustment Busings have changed, or when PG is not within the standard values
after PG checking.
 Tools
 Parallelism adjustment jigs (two types; the one for 0th column side and the
one for 80th column side)
 Fixtures for precision control
 Thickness gauge: 1.1 mm (x2)
1.3 mm (x2)
 Phillips screwdriver
 Hex wrench
 Standard value
 Specified PG value: 1.2 ± 0.1 mm
Figure 5-31. Parallelism adjustment jig/Fixtures for precision control
Table 5-7. PG Positions
Position
PG Size
(mm)
Application for Printing
(selected from PG flag list for
normal/head rubbing))
Sequence Application
PG-
<APG Home>
1.2 EPSON special paper
Applied while capping, wiping
operations, during standby after
power-on, performing AID
adjustment.
PG typ.
<Mechanical
default>
1.7
Plain paper
Select when PG- is too narrow
Applied while capping
PG+ 2.35
Envelopes
Select when PG typ. is too
narrow
Applied while capping
PG++ 2.95 CD/DVD
Applied while capping
Applied while EJ release operation
C A U T I O N
 Handle the jigs with care because the bit on the shaft of dial
gauge of parallelism adjustment jigs is very fragile and gets
broken easily.
 The thickness gauges to be used must be free from dust and dirt
and from deformation. Be sure to clean it before use.
 Take care not to soil or scratch the Printhead.
 Move the carriage right and left by pulling the belt, not by
holding down (or pressing) the carriage.
C H E C K
P O I N T
 Carry out this adjustment with installing the Printhead, the Ink
Supply Tube Assy and the Cartridge Box Unit. (Install the CR
Scale after this adjustment) See
"4.2.5 Disassembling the
Printer Mechanism (p133) ".
 Artisan 810/835/837/710/725/730/PX810FW/TX810FW/
PX820FWD/TX820FWD/PX830FWD/PX710W/TX710W/
PX720WD/TX720WD/PX730WD/TX730WD have four PG pre-
settings using the APG mechanism. Use the minimum PG
setting (PG
–: 1.2 mm) to carry out this adjustment.
See Figure. 5-36.
 Carry out “PG Inspection (p.233)” only, if the position of the
notch on the Parallelism Adjustment Busings have not changed.
Parallelism adjustment jig (for 80th column side) Parallelism adjustment jig (for 0th column side)
Fixtures for precision control
Bit on the shaft