Replacement Of The Keyboard - Casio AP-25 Service Manual

1) Replacement of the white key / black key
2) Replacement of the hammer
3) Replacement of the contact rubber
4) Other precauions
When the the keyboard needs to be replaced, make sure to check the key touch before replacing it.
1) Replacement of the White key / Black key
1. Expand the rear end of the white key/black key by a pair of
tweesers and slide it forward horizontally.
2. Apply proper amount of grease to the inside of the Guide and
the front end of the key as well as the rear end of the key.
* Take extra care of the quantity of the grease, which can easily
change the key touch.
* It is recommended to refer to the quantity of the grease which
is applied to the neighboring keys.
3. After replacing the key, put the front end of the key back into the
Guide and slide it backward horizontally.
* Take extra care not to make any scratches in the inside of the
front end of the key and the Guide.
2) Replacement of the Hammer
1. If no jig is available when disassembling, use a driver and a big clip. Then,
lift the hammer up and remove it like a lever.
2. Apply the grease (G501) thinly to the top and bottom of the front end as
well as the fulcrum of the hammer.
* It is recommended to refer to the quantity of the grease which is applied
to the other hammers when disassembling.

REPLACEMENT OF THE KEYBOARD

Grease
— 4 —
White key
Guide
Clip
Driver
Grease