Self-Test Function; Hexadecimal Dump Function - Epson 2070 - LQ B/W Dot-matrix Printer Service Manual

Product Description

1.4.5 Self-test Function

Pressing the
Load / Eject
mode. Pressing the
mode. You can stop the self-test temporarily by pressing the Pause button, and you can exit the
self-test mode by turning off the printer. When pages are printed from the CSF, the first sheet is
used for scaling the sheet length. Then, the maximum number of printable lines is printed as the
bottom line of the sheet and this number is saved in non-volatile memory as the default page
length. Page lengths are saved individually when a dual-bin CSF is in use.
The self-test prints out the following:
Roman
#$%&' ( )*+, -.
/ 0 1 2 3 4 5 6 7 8 9 :
/012345 6789 : ; <=> ?@ ABCDEFGH I JKLMNOPQRSTUVWXYZ [ \ ] " 'abcdefgh i j k 1 mnopqrstul
S a r i s S e r i f
23456789: ; <=> ?@ ABCDE FGH I J KLMNOPQRSTUVWXYZ [ \
( )•+,-./0123456789 : ; c=> ?.ABCDE FGH
) + ,-. /01 23456789: ; :=>?eABCDEFGli 1 JKLMNOPQRSTUVWx YZ [ \ ]
+ ,-
, - . / 0 1 2 3 4 5 6 7 8 9 : , .<=>?oABCDEFGHIJKLMNOPQRSTUVWXYZ[\]

1.4.6. Hexadecimal Dump Function

with the corresponding ASCII characters. The function isuseful tocheckdata received from the
host. Ifareceivedcodeisnot aprintableASCIIcharacte~ the printer prints aperiod(.) inthe
D u m p
Hex
1 B 4 0 1 B 2 8 4 7 o 1 O O
01 IB 28 43 02 00 78 OF IB 28 63 04 00 00 00 00
00
18 00 06 81 00 81 00 81 00 81 00 81 00 81 00 81
0 0 8 1 0 0 8 1 0 0 8 1 0 0 8 1 0 0 8 1 0 0 8 1 0 0 8 1 0 0 81 .u.u.u.u.ij.u.u.u
00 81 00 81 00 81 00 81 00 81 00 81 00 81 00 81
00 81 00 81 00 81 00 81 00 ES 00 02 3F FF EO FE .Li.u.ij.u.a..z a-
00 03 03 CO 01
07 03
1-32
button while turning on the printer puts the printer in LQ self-test
button while turning on the printer puts the printer in Draft self-test
<=> ?@ABCDEFGH I JKLMNOPQRSTU~XyZ [ \ 1"–~abcde f gh i j k lmnOPqr:
LMNOPQRSTUVWXY Z [ \
I J K
Figure l-lOSelf -test Printout
0 1 1 8 2 8 5 5 0 1 o o o A 1 B
EO
FE 00 02 03
CO 01
Figure l-n Hexadecimal Printout
[ \ ] "—~ abcde f
Z
-
1'— '
1'—
abc de f gh i 1 k 1 mnoPcl r St uvwx
' abcdef gh i j k 1
-
5 , 5
2E 01 14
80
CO
j k
;
Y
rst uvwx YZ
.@. (G. ...UU. ...U
. . ( C . . X . . ( C . . . . .
. . . . . .
. . .