Key Module - IBM 6580 Product Support Manual

-14-
KEYBOARD - Removals/Replacements
Warning: Removing the pad card with a key
pressed may cause the fly plate to spring out of the
key module.
8. Ensure there is no pressure on any keys.
9. Remove the screws from the pad card . •
10. Lift the pad card from the keyboard assembly.
• •
Pad Card Screws
11. To assemble, reverse the above procedure. Before
inserting the logic card, the pad card should be
cleaned and lubricated as follows:
A. Carefully wipe the pad card with an alcohol pad
followed by a lint-free cloth.
B. Use a light abrasive (PIN 9900089) or a .pencil
eraser to clean the top and bottom copper con·
tacts of the 30'pin edge connector.
C. After cleaning the contacts, apply a thin layer of
I BM No. 10 oil to the edge connector (top and
bottom) of the pad card. Coverage of about
50% of the tab area (as measured from the edge of
the tab) will ensure the desired protection of the
contacts.
Warning: Do not over-lubricate the edge
connector, as permanent damage to the key
modules may occur if lubricant gets on the
pad card.
Pad Card Copper Contacts
KEY MODULE
Removal
1. Use the keybutton removal tool (PIN 9900373) to lift
the keybutton from the key module to
be
removed.
2. Disassemble the keyboaru (see Pad Card Removai).
3. Reach under the key assembly and push the failing key
module up until it is free . •
Warning: To prevent loosening a fly plate, ensure no
keys are accidentally pressed while the pad card is
removed.
NOr h •
Spacebar Edge
I .
Retaining Ear
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NOTE: The module retaining ears must clear the frame.
Installation
1. Insert the key module. Match the opening in the key
module with the aligning lug in the mounting hole. The
key stem notch must
be
positioned toward the space·
bar edge of the keyboard . •
2. Reinstall the pad card .
3. Turn the key assembly over and, if necessary, reposi·
tion the contamination shield.
4. Put the keybutton on the key module.
5. Reinstall the logic card cables and covers.