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3.2.1 Internal Self-Test
This test checks the logic circuits on the printed circuit board (PCB). It runs automatically when power is
applied to the printer. The printing function is not energized during this test. The diagnostics include a
checksum test to verify all of the bits of the read only memory (ROM) and a pattern test to exercise and
verify all of the bits of the random access memory (RAM). If there is a failure, the FAULT light flashes.
3.2.2 Carriage Motion Self-Test
This test checks the carriage motor and drive circuitry. Its purpose is to verify that the carriage system
functions and that the mechanism is clear of obstructions. The printing function is not energized during this
test.
The test procedure is as follows.
1.
Start with the power turned off.
2.
Press and hold the FORM FEED and LINE FEED keys and tum the power on.
3.
Release the keys. The carriage should go through a scanning motion. If there is a failure, the
FA ULT light flashes or the test stops before it is complete.
4.
Tum the power off to stop the test.
3.2.3 Print Self-Test
This test checks the logic circuits, line feed motor, carriage motor, and printhead. The test is useful for
general checkout of the printer and after changing an FRU. The test result is a printed pattern of the
ASCII character set (Figure 3-2).
The test procedure is as follows.
l.
Start with the power turned off.
2.
Press and hold the FORM FEED key and tum the power on.
3.
Release the key. The printing operation should start and continue until the power is turned off.
A flashing FAULT light, poor print quality, or failure of the test before completion indicates a
failure. A successful test is determined by examining the printed test pattern.
ABCDEFGHIJKLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz{i)- !"M$X&'<)*+,-./OI
BCDEFGHIJKLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz(i
>-
!"M$Y.&'<>*+,-./012
CDEFGHIJKLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz{i)- !"M$X&'C)*+,-./0123
DEFGHIJKLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz(i)- '"M$X&'<>*+,-./01234
EFGHIJKLMNOPQRSTUVWXYZC,JA_'abcdefghijKlmnopqrstuvwxyz(i)- !"M$X&'<>*+,-./012345
FGHIJKLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz(l)- !"M$X&'C)*+,-./0123456
GHIJKLMNOPQRSTLIVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyzCi
>-
!"M$X&'C)*+
1
-./01234567
HIJKLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyzCl )- !"M$X&'<>*+,-,/01234567B
IJKLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz(i )- !"M$X&'()*+,-./01234567B9
JKLMNOPQRSTUVWXYZ [']A_' abcdefgh i jK 1 mnopqrstuvwxyz {: )- ! "M$X&'
<)
*+ , -
./0123456789:
KLMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz(l)- !"M$X&'()*+,-,/01234567B9:;
LMNOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz(l )- ! "M$Y.&'()*+,-./0123456789:;<
MNOPQRSTLIVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz(l)- !'M$X&'C)*+
1
-./0123456789:;<=
NOPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz{i)- !'M$X&'()*+,-./0123456789: ;<=>
OPQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz{i)- !"M$Y.&'()*+,-./0123456789: ;<=>?
PQRSTUVWXYZC'JA_'abcdefghijKlmnopqrstuvwxyz{i)- !'M$X&'()*+,-./0123456789: ;<=>?•
MA-10,016
Figure 3-2 Print Test Pattern
3-3
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Table of Contents
Troubleshooting
