— 28 —
4
Remove Lower cabinet (keyboard) and keytop.
Lower cabinet
(keyboard)
5
Remove Rubber key, knob and jack cover.
Lower cabinet
(display)
7
Remove Lower cabinet (display).
6
Desolder the wire connected
to the buzzer on the Lower
cabinet (keyboard) from key-
board PCB ass’y.
Rubber key
Knob
Keytop
Jack cover
Summary of Contents for SF-5590SY
Page 19: ... 19 6 SCHEMATIC DIAGRAMS 6 1 MAIN PCB ASS Y A342054 1 4 CPU ...
Page 20: ... 20 6 1 MAIN PCB ASS Y A342054 2 4 ...
Page 21: ... 21 6 1 MAIN PCB ASS Y A342054 3 4 ...
Page 22: ... 22 6 1 MAIN PCB ASS Y A342054 4 4 ...
Page 23: ... 23 6 2 KEYBOARD PCB ASS Y A342055 1 3 COM PORT BUZZER ...
Page 24: ... 24 POWER SUPPLY 6 2 KEYBOARD PCB ASS Y A342055 2 3 ...
Page 25: ... 25 6 2 KEYBOARD PCB ASS Y A342055 3 3 ...
Page 33: ...MA0900571A ...