Casio PX-130 Service Manual & Parts Manual page 31

<If the PLATE comes off>
The PLATE is a transparent plastic plate. If the plate comes off, put it on the place where the FFC is,
and insert its end into place where the blue line is shown in the image.
NOTE: The design of the PLATE was modified after the mass production.
The new types of plates are installed in PX-130RD since the beginning of mass production.
PLATE (Before change)
4. Remove the keyboard PCBs (MACP-KYA1/KYA2, KYB1/KYB2).
MACP-KYA2 PCB
MACP-KYB2 PCB
5. Remove eight rubber keys.
NOTE: One rubber key is shorter than the others.
<Before change>
MACP-KYA1 PCB
MACP-KYB1 PCB
Rubber keys
– 29 –
<After change>
Short rubber key
Rubber keys
Short rubber key