Table 23. Print quality tests and actions (fanfold) (continued)
Line
Description
Action, if failure
9
Printhead wire shifter test. Prints two lines.
To print in NLQ mode, one set of nine
wires (1B to 9B) is shifted up, by a
solenoid, relative to the fixed set of nine
wires (1A to 9A). In this test, the first line
prints a
less than
symbol (NLQ mode),
tilde
(draft mode), and a
greater than
symbol (NLQ mode). The second line
prints a
less than
symbol (draft mode),
tilde
(NLQ mode), and a
greater than
symbol
(draft mode).
1. Install a new printhead. See Printhead.
2. Install a new logic board (see Logic
board).
3. Install new printhead cables.
10
Printhead drive test. Prints 19 lines. The
left margin should be even.
See Printhead drive service check.
11
Print wire test. Look for light or missing
dots, or ink smearing.
1. Install a new printhead. See Printhead.
2. Install a new logic board (see Logic
board).
3. Install new printhead cables.
12
Continuous straight line.
1. See Main paper drive check and
adjustment.
2. See Printhead drive service check.
13
See Line 5 above.
14
Skew test in draft mode. The line should
print parallel to the edge of paper.
See Main paper drive check and
adjustment.
Chapter 5. Removals, service checks and adjustments
172
Содержание 4247-V03
Страница 24: ...Reference table 8 ribbon lift and 26 pin cable connectors 93 Chapter 1 Diagnosing problems 24 ...
Страница 138: ...Operator panel cable wiring Chapter 3 Wiring diagrams 138 ...
Страница 144: ...Tractor assembly cable wiring Chapter 3 Wiring diagrams 144 ...
Страница 164: ...Chapter 5 Removals service checks and adjustments 164 ...
Страница 173: ...Table 24 Print quality sample 1 2 3 Chapter 5 Removals service checks and adjustments 173 ...
Страница 246: ...Assemblies Chapter 6 Parts catalog 246 ...
Страница 307: ...Taiwanese EMC Notices 307 ...
Страница 310: ...Index Copyright IBM Corp 2002 310 ...
Страница 311: ...IBMR Part Number 75P1301 Printed in U S A G544 5873 00 1P P N 75P1301 ...