REV.-A
1.6 OPERATING INSTRUCTIONS
This section describes the self-test, hexadecimal dump function, error states, printer initialization, and
buzzer operation.
1.6.1 Self-Test
To run the self-test in draft mode, turn on the printer while pressing the LOAD/EJECT button. To run
the self-test in LQ mode, turn on the printer while pressing the LINE FEED/FORM FEED button. You can
press the PAUSE button to stop or start the self test.
When you are satisfied with the self test, press the PAUSE button to stop it and then turn off the printer.
The firmware revision number is printed on the first line of the self-test, followed by the current DIP
switch settings.
xxxxxx
Country/PC
U.S.A.
F r a n c e
Germany
3
1
4 3 7
1-2 1-3 1-4
on on on
o f f
on on
o f f o f f
0 n
o f f o n
o f f
o f f o f t o f f
on on
o f f
cn
o t t o f t
f
i
on
on
H i g h s p e e d d r a f t
V a l i d ’
ot
I n v a l i d
on
R e c e i v e
b u f f e r
V a l i d
o f f
0
1 i n c h s k i p
I n v a l i d
o f f
2 - 2
o f f o f f
Figure 1-8. Self-Test
1.6.2 Hexadecimal Dump Function
To enter hexadecimal dump mode, turn on the printer while pressing both the LOAD/EJECT and the
LINE FEED/FORM FEED buttons. In hexadecimal dump mode, the printer prints the hexadecimal
representation of the input data along with the corresponding ASCII characters. This function is useful
for checking the data the printer receives from the host. If input data is a control code instead of a
character code, a period is printed in the ASCII
column.
4 0
5 2
0 0
7 4
0 1
3 6
1 8
7 0
0 0
2 0
2 0
5 4
6 8
6 9
7 3
2 0
6 9
7 3
2 0
6 1
6 E
2 0
6 5
7 8
6 1
T h i s i s a n
7 0
6 C
2 0
6 6
2 0
2 0
6 4
7 4
6 1
2 0
6 4
m p l e o f a d a t a d
7 5
6 D
7 0
2 0
7 0
7 2
6 9
6 E
7 4
6 F
7.5
7 4
2 E
2 0
5 4
6 8
p r i n t o u t . T h
7 3
2 0
6 6
6 5
6 1
7 4
7 5
7 2
6 5
2 0
6 D
6 1
6 8
6 5
7 3
i s f e a t u r e m a k e s
2 0
2 0
2 0
2 0
2 0
6 9
7 4
6 5
6 1
7 3
7 9
2 0
6 6
.
i t e a s y
Figure 1-9. Hexadecimal Dump
1-20
Summary of Contents for LQ-1170
Page 1: ...LQ 1170 24 PIN DOT MATRIX PRINTERS TM LQ8 1170 ...
Page 2: ...L Q 8 7 0 1 1 7 0 SERVICE MANUAL EPSON T Printed on recycled paper ...
Page 101: ...10 9 91 Yes NO Replace pluggable chips on main board 5 6 ...
Page 110: ...Table 5 4 Repair of the Power Supply Board Continued 5 15 ...
Page 118: ......
Page 121: ...REV A Figure 6 2 LQ 870 Lubrication Points 6 3 ...
Page 122: ...REV A Figure 6 3 LQ 1170 Lubrication Points 6 4 ...
Page 134: ...1 I II ...
Page 135: ...REV A Q m u D w IL 0 1 xl Figure A 3 CO60 DRV Board Circuit Diagram A 11 ...
Page 136: ...Figure A 4 CO60 PSB Board Circuit Diagram A 12 ...
Page 138: ...LO SLOE002 OWO9 1Nd 0 9 0 3 5 f l P I 11 I 01 I 6 I 8 1 L 9 I 9 I B I I2 I 2 I 1 ...
Page 142: ...REV A Fl 24ov T3 IsA I I II II AL I CU rl Figure A 10 C060 PSE Board Component Layout A 1 8 ...
Page 143: ...LMS d10 IP IMS dla ...
Page 144: ...REV A A 4 EXPLODED DIAGRAM Figure A l 2 1 Exploded Diagram for LQ 870 A 2 0 ...
Page 145: ......
Page 146: ...REV A Figure A 13 1 Exploded Diagram for Model 5DlO A 22 ...
Page 147: ... 5 2 5 610 c 3 5 9 0 El ...
Page 149: ...REV A A 5 CASE OUTLINE DRAWING Figure A l 4 1 Case Outline Drawing for LQ 870 A 25 ...
Page 151: ...lllllll IllI l l IIIIII II0 IIll III1 I I I C O 6 1 M A I N B o a r d A 3 7 ...
Page 152: ... U nRonenl2 i i C O 6 0 HAIN B t _1 m r OL J IIA IS I 19 CNI 36 I I8 I 23 IS ...
Page 153: ...a i iJ 0 E fig tfti I z ...
