Question about IBM 6400 Matrix Printer

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Ibm 6400 imperfections in the impression of the right side, leave two columns blank, as if the hammers were not activated

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You most likey have a bad fret or a dirty hammer bank cover

Jack

Posted on Oct 01, 2010

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This is a easy problem... Have any question call 972-907-9771 x311
ibm 6400 - 51e9bbd.jpg ATTENTION Hammer springs and hammer tips are fragile. Do not touch the hammer springs or tips. Handle hammer springs by the
thick mounting base only. Apply pressure only to the mounting base.
NOTE: Replace a hammer spring assembly only if there is visible damage or broken parts can be seen in the assembly.
5. Remove the mounting screws from the old hammer spring assembly. (See Figure 18, page 367.)
6. Handling the hammer spring assembly by the mounting base only, gently pry the old hammer spring assembly off its
mounting pins. (See Figure 18, page 367.)
7. Inspect the hammer bank and the old hammer spring assembly:
a. If there is ink on the hammer bank mounting surface, the hammer spring assembly mounting surface, or the hammer
spring neck or tines, reinstall the old hammer spring assembly and replace the shuttle frame assembly (page 405).
b. If the old hammer spring assembly and the hammer bank are free of ink, install the new hammer spring assembly
Installation
1. Using a clean dry cloth, wipe the hammer spring mounting surface on the hammer bank. Make sure the cloth does not
leave lint on the hammer bank.
ATTENTION Hammer springs and hammer tips are fragile. Do not touch the hammer springs or tips. Handle hammer springs by the
thick mounting base only. Apply pressure only to the mounting base.
NOTE: Replace a hammer spring assembly only if there is visible damage or you see broken parts in the assembly.
2. Handling it by the mounting base only, remove the new hammer spring assembly and mounting screws from the box.
3. Handling the hammer spring assembly by the mounting base only, carefully position it on the hammer bank mounting pins.
then gently press the mounting base down against the alignment pins. (See Figure 19, page 369.)
4. Continue pressing down on the mounting base of the the new hammer spring assembly as you install the mounting screws
from the replacement kit. Using a Torx T-10 bit adapter, torque each screw to 14 inch-pounds (1.58 N•m). Tighten the
center screw(s) first. (See Figure 19, page 369.)
NOTE: Use the 1-30 inch-pound Torque Screwdriver, IBM part number 16F1661.
5. Install the hammer bank cover assembly (page 354).
6. Install the shuttle frame assembly (page 405).
7. Install the ribbon and load paper.
ATTENTION Do not attempt to adjust or “tweak” hammer springs.
8. Run an operator print test and check print quality (page 223):
a. If print quality is acceptable, return the printer to normal operation (page 339).
b. If print quality is still degraded, replace the shuttle frame assembly (page 405).

Posted on Sep 10, 2009

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It is a printer head problem. pls checked it.

Posted on Sep 10, 2009

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Platen Gap Adjustment (Figure 35)
IMPORTANT Only do this procedure if the original equipment shuttle frame assembly or platen has been replaced by a new or
refurbished unit.
1. Prepare the printer for maintenance (page 338).
2. Remove the shuttle cover assembly (page 357).
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abdd6e9.jpg

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