2-7
3. DISPLAY ERROR CORRECTION FLOW CHART
No Display or Some Display is broken?
Something wrong with the Display?
3A 3B
OK
YES
LCS Series : IC901(56)
LCF Series : LCD901(7)
YES
NO
Checked the LCD
Driver Vdd?
YES
LCS Series : IC901(60)
LCF Series : LCD901(10)
NO
Checked the LCD
Driver Ground?
YES
LCS Series : IC901(57), IC402(79)
NO
Checked the LCD
Driver Reset?
YES
LCS Series : IC901(61)
LCF Series : LCD901(6)
NO
Checked the LCD
Driver OSC?
YES
LCS Series : IC402(44, 46, 74, 79),
PN901(2, 8, 18, 19),
IC901(57, 62, 63, 64)
LCF Series : IC402(44, 46, 74, 79),
PN902(7, 8, 17, 23),
LCD901(2, 3, 4, 5)
NO
Checked the LCD
Driver data interface?
YES
LCS Series : IC901(1~55),
LCD, Check the short
NO
Checked the LCD to
LCD Driver line?
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