Panasonic FX-55 Series Operating Instructions Manual page 7

6. Connect the stack type connector of other language specific keyboard.
Do not pull the flat cable (G) connecting the keyboard and stack type connector (F) forcibly.
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7. Tighten the screws (H) firmly.
Use the PH 1 (PH #1) screwdriver.
The screws used are 3.
Recommended tightening torque
0.45 N•m ± 0.05 N•m (4.5 kgf•cm ± 0.5 kgf•cm)
8. Remove the release paper (I).
9. Insert the projection parts (J) of the keyboard into the (K) parts, and attach it while lowering.
10. Attach the keyboard plate (B) and tighten the screws (L) firmly.
Use the PH 1 (PH #1) screwdriver.
The screws used are 3.
I M PO R TAN T