Casio SF-4400 Service Manual & Parts List page 23

No. OPERATION
(After few seconds)
22
2
23
24
ESC ESC
25
26 Press "RESET" key.
DISPLAY
MEMORY 3 WR2
4 READ2
1 WR1 5 DUMP
2 READ1 6 CHKSUM
EXECUTING
COMPLETE
32KB
(64KB)
TEST 2 MEMORY
MENU 3 KEY
4 BUZZER
1 DISP 5 EXT
— 21 —
NOTE
Check sound.
If RAM has defect,
error message will
be appered.