Epson 2070 Service Manual - Page 41

Product Description LQ-2070 Sewice Manual 1.4.5 Self-test Function Pressing the Load / Eject button while turning on the printer puts the printer in LQ self-test mode. Pressing the LF/FF button while turning on the printer puts the printer in Draft self-test 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: 0 The maximum number of printable lines (only oncutsheets from the CSF) 0 The pattern of characters shown in the figure below. Roman ! "#$%&' ( )*+, -. /0 12345 6789: ; ?@ ABCDEFGH I JKLMNopQRs'flJWxyz[ \ ] " ' abcde fgh i j k lrnnopql ! II 0123456789:; ?@ABCDEFGH I JKLMNOPQRSTU~XyZ "#S 01 23456789 : ; ?@ ABCDEFGH 1 jKLMNOpQRSTUVWXy Z [ 0 1 2 3 4 5 6 7 8 9 : ;z=>?@-cDEFGHIJKLMNOpQRsTUmyZ[ [ \ \ ] 1"-~abcde "-~ abcde f gfhghi .ji kj klrlnmnnoOpqPqr.rs: 1 \]- 'abcdefghi jklrnnopqrstl 012345 6789 : ; ?@ ABCDEFGH I JKLMNOPQRSTUVWXYZ [ \ ] " 'abcdefgh i j k 1 mnopqrstul 0123456789:; ?@ABCDEFGHI JKLMNOPQRSTUVWXYZI \ 1"-yabcde f ghi Jk ~ mnoPqrs tuv~ 0 123456789: ; ?@ABCDEFGHI JKLMNOPQRSTU~Xyz [ \ ] "-' abcdef ghi jk lmnopqrs t uvw: Saris Serif 01 23456789: ; ?@ ABCDE FGH I J KLMNOPQRSTUVWXYZ [ \ 1'- ' abcde f gh i 1 k 1 mnOPq r St uvwx 0123456789 : ; c=> ?.ABCDE FGH I J K LMNOPQRSTUVWXY Z [ \ 1'- abc de f gh i 1 k 1 mnoPcl r St uvwx Y; ) q + ,-. /01 23456789: ; :=>?eABCDEFGli 1 JKLMNOPQRSTUVWx YZ [ \ ] - ' abcdef gh i j k 1 mnopq rst uvwx YZ q + ,- ,/@1234567B9: ;?eABcDEFGHIJKLMNOPQRSTUVWXYZ[\]"-iabcdef9hi jklmnopqrstuvwxyz{ +,-./0123456789: ,.?.ABcDEFGHIJKLMNOP(2RSTUVWXYZ[\] '-'abcdefghi iklmnopqrstuvwxyz{ j , - . / 0 1 2 3 4 5 6 7 8 9 : ,.?oABCDEFGHIJKLMNOPQRSTUVWXYZ[\] "-'abcdefghi jklmnopqrstuvwxyz (;)' -./01234~6~89: ;?eABcDEFGHIJKLMNoPoRsTuvwxYZ[\] '-' abcdefghi jklmnopqrstuvwxyz( ~}-~ Figure l-lOSelf -test Printout 1.4.6. Hexadecimal Dump Function Pressingthe Load/Ejectand LF/FFbuttons whiletumingon theprinterputs theprinterin hexadecimaldump mode.In thismode,datareceivedisprinted outinhexadecimalforrna~along with the corresponding ASCII characters. The function isuseful tocheckdata received from the host. Ifareceivedcodeisnot aprintableASCIIcharacte~ the printer prints aperiod(.) inthe ASCIIcolumn.Whenreceived dataremainsinthebuffe~ thatdataisprintedbypressingthe Pausebutton. Hex D u m p 1B401B2847o1OO 01 18285501oooA1B 5,5 .@. (G. ...UU. ...U 01 IB 28 43 02 00 78 OF IB 28 63 04 00 00 00 00 .. (C. .X.. (C..... 00 16 2B 30 OA 09 OA OA OA OA OA IB 2E 01 14 14 ..+0 18 00 06 81 00 81 00 81 00 81 00 81 00 81 00 81 ...U.U.U.U.U.U.U 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 .U.u.u.u.u.u.u.u 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 EO FE 00 02 03 80 IE FE 00 02 IC .. .L.aE...~.~.. . 00 OE FA 00 07 03 CO 01 EO 00 00 OF CO 81 00 E6 L~-~ Figure l-n Hexadecimal Printout 1-32 Rev.A