
Adjustment
5.1.2 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 0th column side and on the 80th
columns side to ensure reliable print quality.
Once the Carriage Assy and/or Adjustment Bushes have been removed or
whenever necessary for any other reason, make this adjustment to correct the
deviation of the platen gap.
Things to be used
Thickness gauge:
1.1 mm (x2)
1.3 mm (x2)
Phillips screwdriver
Figure 5-1. PG Position at PG Adjustment
Table 5-2. 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 thick paper
PGPP, Postcards, Matte, etc.
Cleaning
CR measurement,
VH detection
CR home position
seek
PGtype
<Mechanical
default>
1.7
Plain paper
EPSON special thin paper, SF, etc.
Rubbing with PG1.2 is avoided
PG+
2.35
Envelopes
Rubbing with PG1.2 and 1.7 is avoided
PG++
4.2
CD-R printing
At ink replacement
C A U T I O N
The thickness gauge to be used must be free from dust and dirt
and from deformation. Be sure to clean it before use.
Take care that the Print Head is not soiled or scratched.
To ensure high accuracy of adjustment, install dummy ink
cartridges in the carriage, and move the carriage right and left
by pulling the belt without holding the carriage.
C H E C K
P O I N T
Make this adjustment after installing the mechanism unit in the
Housing Lower. (Install the Linear Scale after adjustment.)
Refer to
With Stylus PHOTO RX640/650, four stages of PG setting are
available by means of the APG Mechanism. However, make
this adjustment with the mechanism in the minimum PG
position (PG-: 1.2 mm).
(
and below.
)
Locating hole
Locating hole
Содержание Stylus Photo RX640 series
Страница 1: ...EPSON StylusPHOTORX640 650 Scanner Printer Copier SERVICE MANUAL SEMF05003 ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 15: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 19: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 40: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 71: ...C H A P T E R 5 ADJUSTMENT ...
Страница 77: ...C H A P T E R 6 MAINTENANCE ...
Страница 82: ...C H A P T E R 7 APPENDIX ...
Страница 87: ...Model PM A890 Stylus PHOTO RX640 650 Board C608Main Sheet 1 3 Rev D ...
Страница 88: ...Model PM A890 Stylus PHOTO RX640 650 Board C608Main Sheet 2 3 Rev D ...
Страница 89: ...Model PM A890 Stylus PHOTO RX640 650 Board C608Main Sheet 3 3 Rev D ...
Страница 90: ...Model PM A890 Stylus PHOTO RX640 650 Board C608PNL Sheet 1 1 Rev A ...
Страница 91: ...Model PM A890 Stylus PHOTO RX640 650 Board C608PNL B Sheet 1 1 Rev C ...
Страница 92: ...Model PM A890 Stylus PHOTO RX640 650 Board C608PSB Sheet 1 1 Rev B ...
Страница 93: ...Model Stylus PHOTO RX640 650 Board C608PSE Sheet 1 1 Rev B ...
Страница 94: ...Model PM A890 Stylus PHOTO RX640 650 Board C608ISN Sheet 1 1 Rev D ...
Страница 96: ...400 100 101 PM A890 EPSON Stylus Photo RX640 650 No 1 REV 01 C608 ACCE 001 ...
Страница 98: ...544 202 110 109 108 300 200 PM A890 EPSON Stylus Photo RX640 650 NO 3 REV 01 C608 ELEC 001 ...